By Control Of Electric Or Magnetic Drive Motor Patents (Class 417/44.1)
  • Patent number: 10641533
    Abstract: A compressor driving apparatus, or a home appliance including the same, includes a DC terminal capacitor to store a charge, an inverter to convert direct current associated with the charge of the DC terminal capacitor into an alternating current and output the alternating current to a motor, an output current detection unit to detect an output current flowing in the motor, and an inverter controller to increase a motor speed by starting the motor, and controlling a speed increase of the motor to change based on an increasing slope of a change in an output current detected by the output current detection unit during the speed increase of the motor.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: May 5, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Duseok Cho, Jangsik Kim, Jaedong Kim
  • Patent number: 10612794
    Abstract: A hydronic distribution system includes self-regulating valves networked together and operable to share valve temperature and valve position information with a microprocessor or other type of controller. The microprocessor runs one or more algorithms that process the temperatures and positions of the valves and then computes a desired speed for one or more variable speed pumps within the system. Controlling the pumps to operate at the desired speed and still maintain the correct amount of process fluid flow needed by the system reduces the overall energy use of the hydronic distribution system, saves on the operational lives of the pumps, and increases system efficiency.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: April 7, 2020
    Assignee: BELIMO HOLDING AG
    Inventors: Nathan F. Rothman, Ian Dempster
  • Patent number: 10598176
    Abstract: A pump includes a casing defining an interior volume. The pump casing includes at least one balancing plate that can be part of a wall of the pump casing with each balancing plate including a protruding portion having two recesses. Each recess is configured to accept one end of a fluid driver. The balancing plate aligns the fluid displacement members with respect to each other such that the fluid displacement members can pump the fluid when rotated. The balancing plates can include cooling grooves connecting the respective recesses. The cooling grooves ensure that some of the liquid being transferred in the internal volume is directed to bearings disposed in the recesses as the fluid drivers rotate.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: March 24, 2020
    Assignee: Project Phoenix, LLC
    Inventor: Thomas Afshari
  • Patent number: 10502038
    Abstract: The present invention discloses a combined operation method for work modes of a walking beam pumping unit, which relates to the field of oil production engineering. According to the number of the theoretical full-stroke pumping in a cycle, the number of the crank complete-cycle operation time, the times of respective complete-cycle operation, the number of the crank incomplete-cycle pumping operation times, travelling distances of the polished rod in respective incomplete-cycle pumping operation, the time of respective incomplete-cycle pumping operation, the number of the crank incomplete-cycle no-pumping operation times, the time of respective incomplete-cycle no-pumping operation, and the order of the crank complete-cycle operation, the crank incomplete-cycle pumping operation, and the crank incomplete-cycle no-pumping operation are arranged in the present invention.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: December 10, 2019
    Assignee: HARBIN SURFICS ELECTRICAL TECHNOLOGY INC
    Inventors: Min Zhang, Mingting Han, Jie Zhang, Wen Xing
  • Patent number: 10473126
    Abstract: In a control unit of a hydraulic control device, a workload calculation unit calculates the amount of workload cut in a first pump when supply of first oil from the first pump to a continuously variable transmission mechanism through a check valve is switched to supply of second oil from a second pump to the continuously variable transmission mechanism. A workload determination unit determines whether the amount of workload loss of an ACG is more than the amount of workload cut. A motor controller stops a motor or decreases a rotation number if the workload determination unit determines that the amount of workload loss is more than the amount of workload cut.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: November 12, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Masamichi Harada
  • Patent number: 10400761
    Abstract: A long stroke pumping unit includes a tower, a counterweight assembly movable along the tower, a crown mounted atop the tower, and a drum supported by the crown and rotatable relative thereto. A belt has a first end connected to the counterweight assembly and a second end connectable to a rod string, and the belt extends over the drum. A linear electromagnetic motor is used to reciprocate the counterweight assembly along the tower. The linear electromagnetic motor includes a traveler mounted to an exterior of the counterweight assembly and a stator extending from a base of the tower to the crown and along a guide rail of the tower. The pumping unit further includes a sensor for detecting position of the counterweight assembly.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: September 3, 2019
    Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
    Inventors: Clark E. Robison, Benson Thomas, William Kevin Hall, Sean M. Christian
  • Patent number: 10389287
    Abstract: Systems and methods for controlling a permanent magnet synchronous motor to eliminate the need to filter a PWM output of the motor's drive system. In one embodiment, the motor's drive transforms measured output currents to a d-q reference frame and uses these to determine demanded Vd and Vq voltages. An inverter angle is determined from the difference between the demanded Vd and Vq voltages. A demanded bus voltage is determined as the square root of the sum of the square of the demanded Vq and the demanded Vd, multiplied by 2/pi. An inverter angle is determined as the arctangent of (?demanded Vd/demanded Vq). The demanded and actual bus voltages are used to determine a firing angle for the converter. The controller uses this information to generate a six-step waveform that can be provided to the motor without requiring output filtering.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: August 20, 2019
    Assignee: Baker Hughes, a GE company, LLC
    Inventor: Taoridi A. Ademoye
  • Patent number: 10366788
    Abstract: An administration set for an infusion pump includes a free-flow prevention device having a movable plunger that includes a cam surface defining an uneven profile along a direction of movement of the plunger, wherein the shape of the cam surface profile indicates the administration set is authorized for use with the infusion pump and may further indicate the specific type of administration set. A sensor in the infusion pump senses movement of the plunger as a platen of the infusion pump is latched and generates a profile signal in the time domain representative of the cam surface profile. A processor evaluates the profile signal and controls operation of the pump to protect a patient from improper loading of an administration set, use of an unauthorized administration set, and/or use of an invalid type of administration set for a chosen infusion protocol.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: July 30, 2019
    Assignee: Curlin Medical Inc.
    Inventors: Azur Azapagic, Mohan Jonathan Barkley
  • Patent number: 10294937
    Abstract: A pump for conveying liquid includes a pump housing having an inlet, an outlet, an inner circumferential surface and a geometric axis. An eccentric in the housing is rotatable about the geometric axis relative to the housing. A deformable element is disposed between the inner circumferential housing surface and the eccentric. A delivery duct from the inlet to the outlet is formed by the deformable element and the inner circumferential housing surface. The deformable element is pressed against the housing by the eccentric in sections so that a displaceable seal of the duct and a closed pump volume in the duct are formed and are displaceable to convey the liquid along the duct from the inlet to the outlet by rotation of the eccentric. A receptacle, accommodating an edge region of the deformable element, is formed by the inner circumferential housing surface and a counter bracket.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: May 21, 2019
    Assignee: Continental Automotive GmbH
    Inventors: Jan Hodgson, Yves Kopp, Georges Maguin
  • Patent number: 10278535
    Abstract: A machine for the preparation of beverages, including a brewing assembly (10) adapted to receive an amount or dose of a substance (11) for preparing a beverage, a pump (4) provided with an electric motor (8) for pumping a flow of liquid towards and through the brewing assembly (10); a flowrate detector (6) associated with the pump (4); a microphone sensor (20) adapted to provide electric signals indicating the loudness of the noise generated by the machine (1) during operation, and control circuits (ECU, 15) connected to the microphone sensor (5), the flowrate detector (6) and the pump (4) and designed to activate the pump (4) for preparation of a beverage depending on the signals provided by the microphone sensor (20) and by the flowrate detector (6).
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: May 7, 2019
    Assignee: LUIGI LAVAZZA S.P.A.
    Inventor: Carlo De Mango
  • Patent number: 10251818
    Abstract: A pump set for use with a pumping apparatus to deliver nutrition to an infant is disclosed. The pump set can have a first container configured to receiving breast milk; a second container configured to receive fortifier; tubing extending from the first container and from the second container; and a valve mechanism connected to the first and second containers by the tubing and configured to selectively pass liquid from the first container and the second container.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: April 9, 2019
    Assignee: KPR U.S., LLC
    Inventor: Joel David Wiesner
  • Patent number: 10213535
    Abstract: A breast pump (10) includes a breast pump cup (11) that is mounted on a breast, a suction pump (21) that absorbs fluid from the breast side of the breast pump cup (11), a detector (32) that detects temporal change in a sucked state of the breast by the breast pump cup (11), and an indicator (39) and a pattern adjusting unit (33) that perform processing based on the temporal change in the sucked state, which has been detected by the detector (32).
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: February 26, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Nobuhira Tanaka
  • Patent number: 10196883
    Abstract: A long-stroke pumping unit includes a tower; a counterweight assembly movable along the tower; a drum connected to an upper end of the tower and rotatable relative thereto. The unit also includes a belt having a first end connected to the counterweight assembly, extending over the drum, and having a second end connectable to a rod string. The unit further includes a prime mover for reciprocating the counterweight assembly along the tower; a sensor for detecting sudden acceleration of the counterweight assembly due to failure of the rod string; and a controller in communication with the sensor and operable to activate the braking or arrestor system in response to detection of the sudden acceleration. The unit further includes at least one of a braking system for halting free-fall of the counterweight assembly; and an arrestor system for absorbing kinetic energy of the falling counterweight assembly.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: February 5, 2019
    Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
    Inventors: Clark E. Robison, Benson Thomas, William C. Lane, Darius John Yakimchuk, Jeffrey John Lembcke, Bryan A. Paulet, Brandon M. Cain, Sean M. Christian, Paul L. Smith
  • Patent number: 10190590
    Abstract: A blower filter system includes a blower unit (11), an electric motor (24) for driving a blower impeller, a control unit (27) for controlling the electric motor, contacts (22, 23) for connecting to a battery pack, and a battery pack (10) with secondary cells (12) with high energy density and contacts (22, 23) for connecting to the blower unit. The blower unit (11) can be detachably coupled to the battery pack (10). The battery pack is electrically connected to the blower unit via the contacts. The battery pack (10) has protective circuits including electronic components (15, 16, 17, 18, 19, 20, 21, 31) to electrically switch off at least one of the plurality of secondary cells (12) of the battery pack if excessive currents and/or excessive temperatures occur. The battery pack (10) and the blower unit (11) are each at least partially cast in a casting compound.
    Type: Grant
    Filed: July 5, 2013
    Date of Patent: January 29, 2019
    Assignee: Dräger Safety AG & Co, KGaA
    Inventors: Achim Volmer, Björn Ehler, Mathias Dehmke, Andreas Sürig
  • Patent number: 10175092
    Abstract: A cryogenic-rated vibration sensor generally includes a cryogenic-rated accelerometer mounted to a top planar surface of an insulation block, wherein the insulation block includes a threaded opening on a bottom planar surface thereof for attachment to an object. Also disclosed are cryogenic pumps including the cryogenic-rated vibration sensor.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: January 8, 2019
    Assignee: NIKKISO CRYO INC.
    Inventors: Fabien Wahl, Ruben Rodriguez, John Rupert
  • Patent number: 10145230
    Abstract: Systems and methods for improved monitoring of downhole pump conditions may provide real-time monitoring, high accuracy, and low noise when monitoring downhole pump conditions. Systems for monitoring pump conditions may be coupled to any suitable sucker rod pump, and may gather desired data from the pump. The desired data may be gathered at several points-in-time during a pump stroke to provide real-time monitoring. A wave equation corresponding to the behavior of the downhole pump may be solved when the desired data is received to provide real-time monitor. In some embodiments, the wave equation may be solved by separating it into static and dynamic solutions. In some embodiments, the dynamic solution of the wave equation may be solved utilizing an integral-based method.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: December 4, 2018
    Assignee: HENRY RESEARCH AND DEVELOPMENT, LLC
    Inventor: Jeffrey J. DaCunha
  • Patent number: 10071763
    Abstract: The invention includes an electric motor that causes a vehicle steering device to rotate, and a control unit that controls the electric motor, wherein the electric motor has a stator including two independent sets of coil winding group, the control unit has a control portion that computes and outputs a control amount and a drive circuit that independently drives each winding group of the electric motor, and the control portion detects a multiple of failures, categorizes the failures into at least two kinds of failure mode, continues control on a normal side after detecting a first failure, and continues control by employing a set in which control nearer to that at a normal time can be carried out, including a past failure, when detecting a second or subsequent failure.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: September 11, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Akira Furukawa, Akihiko Mori
  • Patent number: 10047737
    Abstract: A pump features: A motor having a front end bell (FEB) with a coupling portion having twist lock style (TLS) connections with locking portions, and an outer surface with a detent; and a pump head (PH) including a PH portion having a PH coupling portion with corresponding TLS connections and corresponding locking portions with locking stops. The PH portion has an outer surface having a threaded orifice. The TLS connections couple together when the FEB and PH coupling portions are pushed together. The locking portions engage when the FEB and PH coupling portions twist together about the longitudinal axis of the pump. The locking stops abut against the locking portions to stop the FEB and PH coupling portions from twisting further, so the detent and the threaded orifice align to receive the LP, locking the motor and PH together.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: August 14, 2018
    Assignee: Flow Control LLC
    Inventor: Humberto V. Meza
  • Patent number: 10044306
    Abstract: Systems and methods for controlling a permanent magnet synchronous motor to eliminate the need to filter a PWM output of the motor's drive system. In one embodiment, the motor's drive transforms measured output currents to a d-q reference frame and uses these to determine demanded Vd and Vq voltages. An inverter angle is determined from the difference between the demanded Vd and Vq voltages. A demanded bus voltage is determined as the square root of the sum of the square of the demanded Vq and the demanded Vd, multiplied by 2/pi. An inverter angle is determined as the arctangent of (?demanded Vd/demanded Vq). The demanded and actual bus voltages are used to determine a firing angle for the converter. The controller uses this information to generate a six-step waveform that can be provided to the motor without requiring output filtering.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: August 7, 2018
    Assignee: Baker Hughes Incorporated
    Inventor: Taoridi A. Ademoye
  • Patent number: 9964205
    Abstract: An electric oil pump (ELOP) provided in parallel to a mechanical oil pump driven by an engine supplies oil to a clutch of a transmission. The ELOP is rotated in advance of a request to operate the ELOP at a targeted relatively-low first preoperation rotational speed. When an actual rotational speed matches the first preoperation rotational speed and an actual current matches a threshold, the ELOP is rotated at a targeted relatively-high second preoperation rotational speed. At least when an actual rotational speed matches a second predetermined rotational speed not higher than the second preoperation rotational speed, it is determined that preoperation is completed. If the number of restarts during the preoperation as one operation history of the ELOP reaches or exceeds the predetermined number of times, the current supply to the ELOP is interrupted to limit the restart, thereby reducing the number of repeated restarts of the ELOP.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: May 8, 2018
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventor: Shogo Miyamoto
  • Patent number: 9920603
    Abstract: The method and device of exploitation of well by pumping unit with variable-frequency drive involves periodic repetition of the cycles including pumpdown, search for frequency when delivery stops and accumulation and at the same time to ensure such extraction of fluid from well which is equal to its inflow it is necessary to choose unit with higher capacity in comparison with inflow of fluid from formation into well and during the cycles the pumpdown-accumulation ratio is corrected depending on the results of the previous cycles until the pumpdown-accumulation time ratio stops to change and the torque at which the delivery stops is determined based on the equality of the current torque of the downhole motor shaft and check torque which is pre-determined based on stepwise drop of torque of the downhole motor shaft in the point when delivery stops when supply voltage is decreased.
    Type: Grant
    Filed: October 17, 2015
    Date of Patent: March 20, 2018
    Inventor: Jury F. Bogachuk
  • Patent number: 9846416
    Abstract: A signal processor receives signaling containing information about flow rates from sensorless converters in zone circulators in heating/cooling zones controlled by temperature sensors in a hydronic heating system in order to derive an adaptive pressure set point to meet the flow rates requested by the heating/cooling zones using an adaptive system and flow control curve equation, the signaling containing information about total flow rates requested by the zone circulators; determines desired pump speeds for the zone circulators to meet temperature requirements in heat zones; provides corresponding signaling containing information about the desired pump speeds; and/or determines the adaptive pump control curve equation based upon an adaptive system curve and as a moving maximum system flow rate depending on an adaptive pressure set point, a system flow rate requested by temperature loads, a minimum pressure at no flow, a control curve setting parameter, and an adaptive moving maximum flow and pressure.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: December 19, 2017
    Assignee: Fluid Handling LLC
    Inventors: Andrew A. Cheng, James J. Gu, Graham A. Scott
  • Patent number: 9816514
    Abstract: A magnetic bearing device includes first and second radial electromagnets supporting a rotor shaft in a contactless manner in first and second radial directions. A controller controls each of a first excitation amplifier and a second excitation amplifier based on a result of demodulation by each of a first demodulation section and a second demodulation section. The phase of a second carrier signal differs by (?/2+?) radian from the phase of a first carrier signal. A first demodulation section samples a detection signal of a first current sensor at sampling timing shifted by a phase ? from timing at which a first carrier signal becomes a peak, and a second demodulation section samples the detection signal of a second current sensor at sampling timing shifted by a phase (??) from timing at which the second carrier signal becomes a peak.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: November 14, 2017
    Assignee: Shimadzu Corporation
    Inventor: Junichiro Kozaki
  • Patent number: 9812999
    Abstract: AC and DC brushless motor for the fan, comprising a brushless motor; and an active power adjustment mechanism, disposed within the brushless motor and comprising an EMI filtering and rectifying unit, a prior driving unit connected to the EMI filtering and rectifying unit, a motor driving unit connected to the brushless motor, a constant current unit connected to the EMI filtering and rectifying unit and the prior driving unit, a protective compensation unit connected to the prior driving unit and the constant current unit, a motor controlling unit connected to the motor driving unit, and a sensing unit connected to the motor controlling unit.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: November 7, 2017
    Inventor: Tsung-Te Ho
  • Patent number: 9704468
    Abstract: The embodiments herein provide an apparatus and method for cancelling signal noise. According to one embodiment, an apparatus for cancelling signal noise has a sensor or receiver to capture the undesirable signals. A transducer converts the energy of the captured signals and modulates the captured undesirable signals. A signal inverting circuit is connected to the transducer to generate the inverse of the captured undesirable signals by inverting the amplitude of the undesirable signal while maintain the frequency at the same level. The generated inverse of the undesirable signal transmitted by a transmitter is received by a receiver and output through a speaker so that the output inverse of the undesirable signal is combined with the undesirable signal to produce a desired signal environment.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: July 11, 2017
    Assignee: UNR, LLC.
    Inventors: Lance Samuel Davidson, Dennis Lee Edwards
  • Patent number: 9692342
    Abstract: A brushless motor for an electric power steering device that assists a steering operation includes: a stator having a plurality of winding sets for a plurality of systems respectively; and a rotator having a ferrite magnet. In the motor, a maximum current flowing without any demagnetization at high temperature is large. Hence, the torque of the motor is easily ensured at high temperature. In particular, when a failure occurs in one system, it is easy to ensure the torque of the normal system even at high temperature.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: June 27, 2017
    Assignee: DENSO CORPORATION
    Inventors: Ryo Kano, Takashi Suzuki, Hideki Kabune
  • Patent number: 9669498
    Abstract: A method is provided that includes installing a compressor in a refrigeration system and determining a condenser temperature difference using processing circuitry. The method also includes checking for an overcharge condition or a condenser fan blockage condition when the condenser temperature difference is greater than a high condenser temperature difference value. The method also includes determining a discharge superheat temperature using the processing circuitry and checking for the overcharge condition or the condenser fan blockage condition when the condenser temperature difference is less than the high condenser temperature difference value and the discharge superheat temperature is less than a low discharge superheat temperature value.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: June 6, 2017
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Hung M. Pham
  • Patent number: 9662624
    Abstract: Both a catalyst feed system and a method are provided for providing a flow, of a mud-like catalyst slurry into a polyolefin reactor. The system includes a pressurized reservoir of the catalyst having an outlet, and a progressive cavity pump including a stator and a rotor. The pump stator has an inlet connected to the reservoir outlet, and an outlet leading to the polyolefin reactor. In operation, the reservoir is first pressurized to a level a little higher than the pressure of the reactor. The outlet of the reservoir is opened and the progressive cavity pump is actuated. The pressure drop generated across the catalyst slurry contained in the reservoir by the pump causes the slurry diluent to flow between the interstices of the particles of catalyst. The thick, mud-like catalyst slurry is quickly transformed into a much less viscous, syrup-like slurry that flows from the reservoir outlet to the inlet of the pump stator.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: May 30, 2017
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Robert G. Depierri, J. Charles Dabadie, N. Frank Cook, III
  • Patent number: 9470225
    Abstract: Compressors and methods for determining optimal parking positions for compressor pistons are provided. A method includes performing a current value evaluation for an initial time during operation of a motor of the compressor. Performing the current value evaluation includes measuring a motor current value at the time and comparing the motor current value to an existing optimal parking current value. Performing the current value evaluation further includes modifying the existing optimal parking current value to the motor current value when the motor current value exceeds or is equal to the existing optimal parking current value.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: October 18, 2016
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: Eric K. Watson, Richard Dana Brooke, Timothy Neal Johnson, Meher Prasadu Kollipara
  • Patent number: 9391497
    Abstract: Modular motor apparatuses, systems and methods are disclosed. Certain embodiments comprise a motor core and driver module a power supply module, and an external interface module. Families of these modules may utilize a standardized communication protocol to enhance flexibility, upgradeability, and serviceability in the configuration of the motor apparatus. Certain embodiments comprise a power sharing system in which a power supply module serves two or more motor core and driver modules. Certain embodiments comprise a motor performance configuration module including an integrated or remote user interface. The user interface is configured to allow a high reliability graphical performance configuration and scaling of motor performance without the use of a computer on the motor.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: July 12, 2016
    Assignee: TRANE INTERNATIONAL INC.
    Inventor: Mark Ramsingh
  • Patent number: 9354636
    Abstract: A pump system including a motor, a user-interface, and a controller. The user-interface having a single bar graph comprised of light-emitting diodes to provide visual feedback to an operator. The bar graph is used for programming purposes and for providing a motor speed and run duration status to the operator.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 31, 2016
    Assignee: Regal Beloit America, Inc.
    Inventor: Marc C. McKinzie
  • Patent number: 9347453
    Abstract: A method for controlling air volume output by a motor. The method includes: 1) establishing functional relation formulas for air volume in a low torque interval and a high torque interval; 2) inputting a target air volume into a microprocessor control unit; 3) starting a motor under a torque to enable the motor to reach a steady state; 4) acquiring an adjustment coefficient under the torque, and calculating the air volume; 5) comparing the target air volume with the calculated air volume; 6) re-recording a steady rotational speed after the motor reaches a new steady state under an increased or reduced torque, and recalculating the air volume in the new steady state; and 7) repeating steps 5) and 6) to adjust the torque until the calculated air volume is equal or equivalent to the target air volume.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: May 24, 2016
    Assignee: ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD.
    Inventor: Ge Hu
  • Patent number: 9309872
    Abstract: Embodiments of the systems and methods disclosed herein utilize a brushless DC motor (BLDCM) to drive a single-stage or a multi-stage pump in a pumping system for real time, smooth motion, and extremely precise and repeatable position control over fluid movements and dispense amounts, useful in semiconductor manufacturing. The BLDCM may employ a position sensor for real time position feedback to a processor executing a custom field-oriented control scheme. Embodiments of the invention can reduce heat generation without undesirably compromising the precise position control of the dispense pump by increasing and decreasing, via a custom control scheme, the operating frequency of the BLDCM according to the criticality of the underlying function(s). The control scheme can run the BLDCM at very low speeds while maintaining a constant velocity, which enables the pumping system to operate in a wide range of speeds with minimal variation, substantially increasing dispense performance and operation capabilities.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: April 12, 2016
    Assignee: Entegris, Inc.
    Inventors: George Gonnella, James Cedrone, Iraj Gashgaee
  • Patent number: 9212544
    Abstract: A method for preventing damage to a downhole pump impeller of a downhole pump includes setting a rotatable part of a downhole pump to a selected depth, monitoring the depth of the rotatable part, determining that the depth of the rotatable part has significantly changed, and taking a corrective action to return the depth of the rotatable part to said selected depth in order to prevent damage to an impeller that is liable to be caused by a change in depth of the rotatable part. The downhole pump further has a line shaft, an impeller engaged with the line shaft for pressurizing fluid to be extracted from a well, and monitoring apparatus for monitoring the depth of a distal end of the line shaft in order to prevent damage to the impeller that is liable to be caused by a change in depth of the distal end.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: December 15, 2015
    Assignee: Ormat Technologies Inc.
    Inventor: Nadav Amir
  • Patent number: 9074445
    Abstract: There is provided a system and method for driving AC powered subsea loads. Disclosed embodiments include a system having a rectifier and DC filter configured to be located at a surface vessel and configured to convert AC power supplied by a surface AC power source into DC power. The DC power is transmitted from the surface vessel to an inverter configured to be located remotely from the surface vessel at a subsea location. The subsea inverter converts the transmitted DC power back into AC power, which may then be utilized for driving one or more AC powered subsea loads.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: July 7, 2015
    Assignee: OneSubsea IP UK Limited
    Inventor: John F. Burdick
  • Publication number: 20150147188
    Abstract: Disclosed is a high volume low speed (HVLS) fan that is designed to circulate air in large buildings for cooling, heating, and ventilation. A fan with a diameter between 8 to 24 feet consisting of a plurality of blades, with each in the shape of a tapered airfoil, is driven by a direct drive transverse flux electric motor to produce a very large slowly moving column of air. The HVLS system preferably includes motion and angular shutdown, voltage recognition, blade size recognition and data logging for recording the last 100 or so hours of operation to facilitate warranty applicability and assist in trouble shooting as well as software updates and programming via Bluetooth and internet keypad.
    Type: Application
    Filed: November 25, 2014
    Publication date: May 28, 2015
    Inventor: Michael W. Danielsson
  • Patent number: 9033676
    Abstract: A method and system for pumping unit with an elastic rod system is applied to maximize fluid production. The maximum stroke of the pump and the shortest cycle time are calculated based on all static and dynamic properties of downhole and surface components without a limitation to angular speed of the prime mover. Limitations of structural and fatigue strength are incorporated into the optimization calculation to ensure safe operation while maximizing pumped volume and minimizing energy consumption. Calculated optimal prime mover speed is applied to the sucker rod pump by means of beam pumping, long stroke or hydraulic pumping unit by controlling velocity, acceleration and torque of the electric prime mover or by controlling pressure and flow rate in hydraulically actuated sucker rod pumping system.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: May 19, 2015
    Assignee: Pumpwell Solutions Ltd.
    Inventors: Krzysztof Palka, Jaroslaw A. Czyz
  • Publication number: 20150132148
    Abstract: A dual speed pump controller includes a motor controller for operating a dual speed motor. The controller includes an operating speed circuit for operating the motor in one of a first speed or a second speed, the first speed being greater than the second speed; an event circuit for operating the motor at the first speed before a predetermined event and operating the pump at the second speed after the predetermined event.
    Type: Application
    Filed: November 10, 2014
    Publication date: May 14, 2015
    Inventor: Reza Afshar
  • Patent number: 9022165
    Abstract: A method of controlling a fluid pump to supply lubricating fluid to a plurality of fluid requiring components in a hybrid vehicle powertrain includes selecting a component-required flow rate for each respective component using a determined operating speed and torque for that respective component. Once the each component-required flow rate is selected, the system flow rate is set to the maximum component-required flow rate of the plurality of component-required flow rates. The fluid pump is then commanded to supply fluid to each of the plurality of fluid requiring components at the system flow rate.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: May 5, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Jy-Jen F. Sah, Ali K. Naqvi, Sean W. McGrogan, Mindy L. Barth, Besim Demirovic
  • Patent number: 9020740
    Abstract: A system includes a sump, a pump having a steady-state speed, a fluid component that receives the fluid from the fluid pump, and a controller. The controller detects a soak condition of the system in which the pump load is low as fluid is moved into vacated fluid passages. The steady-state speed of the pump is temporarily increased by adding a calibrated overspeed value to the steady-state speed, for a calibrated duration. The controller reduces the pump speed to the steady-state speed after the calibrated duration has elapsed. A method includes detecting the soak condition and temporarily increasing the steady-state speed via the controller by adding the calibrated overspeed value to the steady-state speed, for a calibrated duration, when the soak condition is detected. A control system includes a processor and storage medium having instructions embodying the method, with detection of the soak condition provided via measurement of fluid temperature.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: April 28, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: John J. Koenig, Terry S Johnecheck, Robert E. Rhein
  • Patent number: 9017038
    Abstract: The design of a high efficiency, variable performance vaneaxial fan, requires the utilization of typical fan and single stage compressor design methodologies. To be able to replace multiple fans, the variable vaneaxial fan design must be capable of operation at several different flow rates and total pressures. These operation points can be met by varying motor revolutions per minute (RPM) or geometric parameters such as the hub diameter, tip diameter, as well as blade geometry including number of blades, pitch, spacing, and length. An ideal design with variable performance can replace a family of current fan designs by providing the capability for efficient operation over a range of flow rates and total pressures. This level of variability would not only allow the fan to respond to changing environmental conditions but also to be fit into systems with different characteristics.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: April 28, 2015
    Assignee: Cornerstone Research Group, Inc.
    Inventors: Bryan M. Pelley, Chris D. Hemmelgarn, Joseph H. Althaus, Jennifer M. Fries
  • Patent number: 9011106
    Abstract: A fan motor controller for a turbine engine comprises a component mounting base and a plurality of fan controller components mounted to the component mounting base. The component mounting base comprises a plurality of sections that are configured to extend circumferentially around a fan inner housing.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: April 21, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Debabrata Pal
  • Publication number: 20150098838
    Abstract: A motor controller, including: a supporting frame, a control circuit board, and a control box. The control box includes: a cavity, a base plate, and a plurality of fins. The control circuit board is disposed on the base plate in the cavity. The fins are disposed outside the cavity on an outer side surface of the base plate. Cooling ducts are formed between adjacent fins. The control box is fixed on the supporting frame.
    Type: Application
    Filed: December 9, 2014
    Publication date: April 9, 2015
    Inventors: Songfa TANG, Chongsheng ZENG, Jianlong FENG, Zhongying JI, Youping MEI
  • Publication number: 20150086384
    Abstract: A blower unit controller and an HVAC system are disclosed herein. In one embodiment, the blower unit controller includes: (1) an input configured to receive motor operating parameters, (2) an output configured to provide a motor speed control signal to an inverter, (3) a memory configured to store a mathematical model of airflow produced by a blower motor, the mathematical model being configured to relate a motor speed to the motor operating parameters and (4) a processor configured to produce the speed control signal based on the mathematical model.
    Type: Application
    Filed: December 4, 2014
    Publication date: March 26, 2015
    Inventor: Harold Gene Havard, JR.
  • Patent number: 8985963
    Abstract: A vane compressor includes a cylinder block, a cylinder chamber having an ellipsoidal inner wall, a rotor whose outer circumferential surface is provided with vane slots formed thereon, a drive source for the rotor, and vanes housed in the vane slots, respectively. The rotor is rotated by the drive source while the vanes are protruded from the vane slots by backpressure generated in backpressure spaces in the vane slots to contact end edges of the vanes with the inner wall of the cylinder chamber. The compressor further comprises a stop mechanism that makes the rotor stopped at a predetermined rotational position where a difference between a total volume of the backpressure spaces when operated and a total volume of the backpressure spaces when stopped becomes minimum. According to the compressor, chattering can be prevented without extra workings on the vanes or the rotor and without providing extra parts.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: March 24, 2015
    Assignee: Calsonic Kansei Corporation
    Inventors: Junichirou Terazawa, Hirotada Shimaguchi
  • Patent number: 8988028
    Abstract: A system includes a motor, an inverter bridge, a voltage detection circuit, and a controller. The motor has a stator and a rotor. The inverter bridge is configured to provide a voltage to the stator, and includes a first switch connected in a series-type relationship with a second switch, a first diode coupled across the first switch, and a second diode coupled across the second switch. The voltage detection circuit is configured to detect a back EMF voltage in the winding. The controller is configured to control the first switch and the second switch to drive the motor, and to receive an indication of the back EMF voltage in the winding from the voltage detection circuit. The controller is also configured to determine a fault has occurred, and to drive one of the first switch and the second switch when a fault has occurred.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: March 24, 2015
    Assignee: Trane International Inc.
    Inventors: David M. Foye, Victor R. Stefanovic
  • Publication number: 20150078926
    Abstract: A hydraulic cylinder assembly for a fluid pump including a cylinder, a bearing attached to an approximate first end of the cylinder, a rod slideably mounted within the bearing, and a piston located about an end of the rod in the cylinder opposite the bearing. A central axis of the rod is offset from, and parallel to, a centerline of the cylinder to impede a rotation of the piston about the rod. The hydraulic cylinder assembly further including a hydraulic pump fluidly connected to the cylinder, the pump configured to provide a hydraulic pressure to the cylinder during an up-stroke of the piston and rod and the pump further configured to generate electricity on the down-stroke of the piston and rod.
    Type: Application
    Filed: September 17, 2013
    Publication date: March 19, 2015
    Inventors: David A. Krug, Stanley D. Nelsen, J. Dennis Allison
  • Publication number: 20150078917
    Abstract: A converterless motor-driven pump system includes an off-grid prime mover. The off-grid prime mover has a rotational driveshaft and operates in response to a throttle control command to control a rotation speed of the rotational driveshaft. An electric power generator is driven by the off-grid prime mover to generate AC power. A variable speed induction motor is directly powered by the electric power generator. A pump that may be submersible is driven by the at least one variable speed induction motor. A system controller that may be local or remote is programmed to generate the throttle control command in response to one or more pump operating characteristics such that the off-grid prime mover, the electric power generator, and the variable speed induction motor together operate to regulate a pressure at the inlet of the electric pump.
    Type: Application
    Filed: September 19, 2013
    Publication date: March 19, 2015
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: David Allan Torrey, Deepak Aravind
  • Patent number: 8978801
    Abstract: A system includes a motor coupled to an energy source and coupled to a hoist pump. During one mode of use or operation, the motor cars receive electricity from the energy source and provide mechanical power to the hoist pump. A method includes directing a motor to mechanically couple to the hoist pump, and directing electrical power to flow from an energy source to the motor, and thereby to control the speed of hoist activity.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: March 17, 2015
    Assignee: General Electric Company
    Inventors: Ajith Kuttannair Kumar, Henry Todd Young, Bertrand Bastien
  • Publication number: 20150064024
    Abstract: A motor controller comprises: a rotation angle estimation unit for estimating and computing a rotation angle of a motor repeatedly based on the current and voltage of the motor without using a motor rotation angle detector; a speed calculation unit for calculating the period of the signal waveform of the rotation angle that is repeatedly estimated and calculated by the rotation angle estimation unit and for calculating an actual rotational speed of the motor based on the period; a drive signal generating unit for generating a drive signal to drive and control the motor based on at least a deviation between the actual rotational speed and a target rotational speed and the rotation angle; and a switching circuit that is switched based on the drive signal to provide drive power to the motor.
    Type: Application
    Filed: August 12, 2014
    Publication date: March 5, 2015
    Inventor: Nobuhiko MORIYAMA