Abstract: An electric motorization system includes a motorized unit equipped with a motor provided with a rotor and stator assembly including several coils, and a frequency converter which is electrically powered by a power supply. The frequency converter is controlled by a monitoring/control unit for turning on the motor in a variable speed operating mode, or for turning off the motor. The electric motorization also includes a measurement system suitable for measuring at least one condensation parameter which is representative of a condensation of the water contained in an ambient air, and the monitoring/control unit is configured to, depending on said condensation parameter, control the frequency converter during the turning off of the motor so that a preheating electric current flows through the coils to activate a preheating of the motor when it is turned off.

Abstract: A servo motor includes a housing, a rotor, a stator, a planetary reduction mechanism, a first Hall magnet, Hall switches, a second Hall magnet, and a position sensor; the rotor, stator, the planetary reduction mechanism, and the position senor are arranged in the housing. The rotor has a rotor support and a rotor shaft; the planetary reduction mechanism includes a sun gear, a planetary carrier, and planetary gears; a reduction ratio of the planetary reduction mechanism is N:1, where N is a positive integer; the first Hall magnet is arranged on the planetary carrier; the Hall switches correspond to the first Hall magnet and are arranged in the housing at even intervals around a rotation axis of the rotor shaft. The number of Hall switches is N; the second Hall magnet is arranged on the rotor; and the position sensor is opposite the second Hall magnet.

Abstract: The present invention relates to an electrical machine (1) having a housing (2), wherein the housing (2) has a hollow-cylindrical cooling jacket (2a) for accommodating a stator (3) and, attached to the end sides of the cooling jacket (2a), housing closures (2b), in particular mounting plates, and wherein the cooling jacket (2a) has cooling ducts (4a) running between its end sides (17) and the housing closures (2b) have redirection grooves (4b) so that two adjacent cooling ducts (4a) are fluidically connected by a redirecting groove (4b), whereby the cooling ducts (4a) and the redirecting grooves (4b) form a meandering cooling path (10) which extends through the housing (2) between an inlet (5) and an outlet (6) and through which a coolant can flow, wherein the housing (2) has a bypass duct (7) which fluidically connects the inlet (5) and the outlet (6) while bypassing the meandering cooling path (10), or which fluidically connects two part regions of the meandering cooling path (10) while bypassing one part o

Abstract: The application provides a gear control circuit and system for an alternating current motor. The gear control circuit includes: a plurality of controllable switches; a detection unit, configured to detect switching statuses corresponding to the controllable switches; a gear input unit, configured to receive a target gear m inputted from outside; and a control unit, connected to the gear input unit and configured to obtain the target gear m. The application also provides a switch controller and an electronic device. The switch controller includes a signal modulation circuit, a signal follower circuit, a comparison circuit, and a switch control circuit. The switch controller may perform digital-to-analog conversion by using the signal modulation circuit, to modulate a first PWM signal being a digital signal into a second PWM signal being an analog signal, and then the signal follower circuit performs load amplification on the modulated second PWM signal.

Abstract: Devices and methods described herein provide for controlling an operating mode of a power tool. Controlling the power tool includes operating, by a motor controller, a motor of the power tool in a first operating mode. Controlling the power tool also includes detecting, by the motor controller, a position of a forward-reverse selector of the power tool, and receiving, by the motor controller, a signal from a mode selector. Controlling the power tool also includes determining, by the motor controller, whether the position of the forward-reverse selector is in the mode selection position, and in response to determining that the forward-reverse selector is in the mode selection position, changing, by the motor controller, the power tool to a second operating mode based on the signal received from the mode selector.

Abstract: A motor control device controls a driving of a motor having a motor winding. The motor control device includes a motor control unit and a parameter setting unit. The motor control unit controls the driving of the motor. The parameter setting unit sets a control parameter related to a driving control of the motor such that at least one of a motor torque and a motor speed is variable according to a system temperature.

Abstract: A compressor includes a casing accommodating a compression mechanism, a detection device having a detection face configured to detect an internal state of the casing, an elastic member, and a cover mounted to the casing to cover the detection device and a part of the elastic member. The detection face is located opposite an outer peripheral face of the casing. The elastic member includes a first portion overlapping the detection device and a second portion not overlapping the detection device, as seen in plan view. The cover is configured to press the second portion of the elastic member against the casing, with the first portion of the elastic member pressing the detection device against the casing.

Abstract: A motor control method controls a motor having windings of a plurality of phases and a cooling water channel. The motor control calculates an estimated maximum temperature of the winding of the phase that reaches a highest temperature from among the windings of the plurality of phases based on the input electrical power when the motor is in a lock state. The motor control further calculates an offset value based on a detected temperature of the windings and a detected temperature of the cooling water, and corrects the estimated maximum temperature based on the temperature of the windings and the offset value. The motor control further controls the input electrical power according to the estimated maximum temperature.

Abstract: An actuator assembly includes a threaded shaft, a threaded nut that is threadably coupled to the threaded shaft, an annular ratchet positioned about the threaded shaft and comprising one or more tracks, and a pin that extends from the threaded shaft and into the one or more tracks. The threaded nut may include a first circumferentially-facing surface, the annular ratchet may include a second circumferentially-facing surface, and the first and second circumferentially-facing surfaces are configured to contact one another to enable the threaded nut to block rotation of the annular ratchet with the threaded shaft. The actuator assembly may enable the threaded nut to move to a limit position and hold full motor torque, but also to break free from the limit position with relatively low torque (e.g., less than the full motor torque; as compared to actuator systems that are devoid of certain features of the actuator assembly).

Abstract: An electronic display device includes a housing for an electronic display to form an assembly. A thermal management subsystem forms part of the assembly and utilizes ingested ambient air from immediately outside said assembly to thermal manage the assembly. Data is received from one or more sensors pertaining to at least one characteristic of the ingested ambient air at times during operation of the assembly. Operating parameters of the assembly are automatically adjusted when the data indicates a difference in the measured at least one characteristic at the times, and when said difference exceeds a threshold value.

Abstract: A method calculates temperatures in an electric drive unit. A first temperature detection region has a first temperature and a second temperature detection region has a second temperature. The first temperature is influenced by a first coupling value which is non-linearly dependent on the first temperature and the temperature at the first and second temperature detection regions. The calculations are divided among separate calculation units such that the temperatures can be estimated in real time.

Abstract: A system for cooling a hermetic motor includes a motor cooling refrigerant flow path configured to direct refrigerant from a condenser disposed along a refrigerant loop to a hermetic motor, and from the hermetic motor back to the refrigerant loop, and a housing of the hermetic motor disposed along the motor cooling refrigerant flow path and configured to receive the refrigerant from the condenser, wherein the housing of the hermetic motor comprises an annulus surrounding at least a portion of a stator of the hermetic motor, and wherein the annulus comprises a plurality of openings configured to direct refrigerant toward the stator and into a cavity of the housing of the hermetic motor.

Abstract: A control system is configured such that a carriage that a processing head is mounted is driven by a motor and reciprocates. The motor is controlled by a controller. The controller reciprocates the carriage by selecting a control mode as a target mode based on temperature information related to temperature of the motor and controlling the motor in the target mode. The controller selects the target mode to be applied to the control of the motor for each of particular work units. The target mode is selected from a group of particular control modes. Each control mode in the group of particular control modes is a control mode in which a maximum temperature, which is estimated based on the temperature information, when the control of the motor using the selected control mode would be executed until the processing is completed, is less than a reference value.

Abstract: A linear actuator assembling method includes a semi-finished product assembling step and a threaded shaft assembling step. The semi-finished product assembling step is to form a semi-finished product, and the semi-finished product includes a case, a main gear, and a main gear bearing. The main gear and the main gear bearing are surrounded and restricted by the case, and the main gear bearing is sleeved on the main gear. In the threaded shaft assembling step, a threaded shaft is reversely assembled, and one end of the threaded shaft is inserted into the main gear to allow the end of the threaded shaft to be restricted by the main gear.

Abstract: An image forming apparatus includes a photosensitive member, an intermediate transfer member, a moving member, a driving motor, a stepper motor, a detector, a phase determiner, and a controller. The stepper motor drives the moving member to move between a first position at which the photosensitive member contacts the intermediate transfer member and a second position at which the photosensitive member contacts the intermediate transfer member are separated. The controller includes a first control mode to control a motor based on a predetermined current magnitude and a second control mode to control a motor by vector control. The controller starts driving the driving motor in the first control mode, and then switches from the first control mode to the second control mode. The controller controls the stepper motor in the first control mode during a period from when the stepper motor is activated to when the stepper motor is stopped.

Abstract: Disclosed is a circuit for converting a temperature change amount into a voltage change amount in a motor drive system, including a positive temperature change rate voltage generation module, a circuit bias module, and a temperature detection module that are integrated on a same substrate. An external power supply voltage is processed by the positive temperature change rate voltage generation module and the circuit bias module, and then inputted to the temperature detection module. The temperature detection module detects in real time the temperature change amount in the motor drive system, convert the temperature change amount into the voltage change amount, and transfer the voltage change amount to the circuit bias module, to allow the circuit bias module to output the voltage change amount. In this way, the conversion from the temperature change amount into the voltage change amount is realized.

Abstract: A converter of a variable frequency drive (VFD) is operated in a ramp-up mode to produce an AC output voltage for accelerating a motor. A loading of the converter is determined concurrent with the ramp-up mode. Transfer of the motor to a bypassed mode is conditioned on whether the determined loading in the ramp-up mode meets a criterion. In some embodiments, conditioning transfer to the bypassed mode comprises foregoing transition to the bypassed mode based on a comparison of the determined loading to an underloading threshold.

Abstract: An electronic device includes a carriage to move along an axis relative to a platform. In addition, the electronic device includes a print head disposed within the carriage to move with the carriage and to deliver a print agent to the platform. Further, the electronic device includes a cooling system. The cooling system includes an air source to deliver air to the print head within the carriage to cool the print head. The cooling system also includes a pressure sensor to measure a pressure of a first zone within the carriage. Moreover, the cooling system includes a controller to control a flow rate of the air into the first zone or from the first zone in response to the measured pressure to maintain the first zone at a positive pressure with respect to a second zone outside the carriage.

Abstract: A motor drive control device includes: a feedback control unit calculating an operation amount (Sad) of a motor such that a rotation speed S3 of the motor matches a target rotation speed S1; a drive control signal generation unit generating a drive control signal Sd based on the operation amount Sad; a current fluctuation detection unit detecting a fluctuation of a current flowing through the motor; a correction instruction unit instructing correction of the operation amount Sad when the fluctuation of the current flowing through the motor is detected by the current fluctuation detection unit; and a correction unit correcting the operation amount Sad and providing the corrected operation amount S2 to the drive control signal generation unit when the correction of the operation amount Sad is instructed from the correction instruction unit.

Abstract: A motor controller includes individual drive circuits, a plurality of energization systems, and a processing circuit that outputs a plurality of individual control signals. The processing circuit executes a first calculation process, a second calculation process, a third calculation process, and a fourth calculation process for each of the energization systems. The first calculation process is a process of calculating individual current command values. The second calculation process is a process of calculating the estimated temperatures of protection targets. The third calculation process is a process of calculating individual limit values. The fourth calculation process is a process of calculating the individual control signals based on the individual current command values that are limited by the individual limit values. The processing circuit calculates the estimated temperatures of the protection targets where current of a target system flows.

Abstract: An example system includes an electric machine, an alternating current (AC)/direct current (DC) converter, a Y-capacitor, and a controller. The AC/DC converter being connected to the electric machine and having a DC side and an AC side. The Y-capacitor is located on the DC side of the AC/DC converter. The controller is configured to determine, based on a measurement of the DC side of the AC/DC converter, an occurrence of a ground fault on the AC side of the AC/DC converter, and control, based on the occurrence of the ground fault, operation of the AC/DC converter.

Abstract: The present disclosure relates to monitoring a condition of an electric drive in an industrial network. A method comprises obtaining values of input parameters, state parameters, and one or more temperatures associated with one or more components, at a first time instant. The method further comprises estimating values of the state parameters at a second time instant with a first layer of a state space model of the electric drive and the values of input parameters at the first time instant. In addition, the method comprises estimating values of the one or more temperatures at a third time instant with a second layer of the model, the values estimated for the state variables and the values of the temperatures at the first time instant. A condition of the electric drive is determined from the values of the temperatures estimated for the third time instant and one or more predetermined thresholds.

Abstract: A fan control circuit with temperature compensation includes an on-off unit and a speed adjustment unit. When determining that a loading is greater than or equal to an adjustable start threshold according to a load signal, the on-off unit controls the fan entering a working mode. In the working mode and determining that the loading is less than a speed-adjusting threshold, the on-off unit maintains a speed value of the fan at a first fixed speed. When determining the loading is greater than or equal to the speed-adjusting threshold, the speed adjustment unit adjusts the speed value according to the loading. The speed adjustment unit generates a speed displacement according to a temperature signal to compensate the speed value.

Abstract: A compressor assembly includes a compressor motor having a main winding coupled with a line terminal to receive power from a line voltage source, and an auxiliary winding. The assembly includes first and second capacitors each coupled between the line terminal and the auxiliary winding, a first relay to selectively couple the first capacitor and the second capacitor in parallel, a second relay coupled to selectively inhibit the supply of power from the line voltage source to the auxiliary winding via the first capacitor, and a control circuit configured to close the first relay in response detection of excess load condition criteria, and to subsequently open the first relay in response to detection of normal load condition criteria. The excess load condition criteria and the normal load condition criteria each include at least one of a voltage of the main winding and a voltage of the auxiliary winding.

Abstract: A control device configured to control a robot including an articulated arm having a plurality of joints each provided with a motor and turned by driving of the motor and a base supporting the articulated arm includes: a temperature information obtaining unit configured to obtain temperature information about the plurality of joints; a joint specifying unit configured to specify one of the joints that requires cooling, based on the obtained temperature information about the plurality of joints; and a motor control unit configured to control the motor of each of the plurality of joints, wherein, when the joint specifying unit specifies one of the joints, the motor control unit controls the motor of at least one of the joints that is located on a side closer to the base from the specified joint so as to turn the joint on the base side for a given time.

Abstract: A hard start capacitor replacement unit includes a capacitor container having a cover, a plurality of capacitors received within the container, each of said capacitors having a capacitance value, a common terminal mounted on the cover and electrically connected to a common terminal of each of said plurality of capacitors, a plurality of cover terminals mounted on the cover spaced apart from the common terminal and from each other, each cover terminal respectively electrically connected to one of the plurality of capacitors, a relay having contacts and being capable of opening and closing said contacts in response to a monitored condition of the motor, the relay having relay terminals, a fuse electrically connected to one of the relay terminals by a first wire wherein the fuse electrically disconnects the hard start capacitor replacement unit and the motor upon a failure, and a second wire electrically connecting one of the relay terminals and the motor, a third wire electrically connecting the common terminal

Abstract: A magnet temperature estimating device for a motor provided with a rotor having magnets and configured to output a rotational motive force, and a stator having a plurality of coils opposing the rotor with an aperture therebetween, is provided. The device includes a sensor configured to detect an induced voltage induced by rotation of the rotor, and a controller configured to control the motor by supplying power to the plurality of coils in response to an input of a detection signal from the sensor. The controller estimates a temperature of one of the magnets based on an amplitude of a frequency spectrum corresponding to a given frequency, among frequency components constituting the induced voltage.

Abstract: A cooling fan monitoring circuit for monitoring and immediately alerting the user of the activation of a cooling fan motor and blade assembly providing notice of the shutting down of equipment requiring cooling to prevent overheating and damage to the equipment. The circuit is capable of monitoring multiple cooling fans and shuts down equipment if any one of the cooling fans ceases function, fails a preset condition, or the equipment reaches a preset temperature.

Abstract: A thermal management system is provided. The system includes a temperature sensor, a fan, an electronic circuit breaker (ECB) coupled to the fan to provide electric power to the fan. The system includes a controller coupled to the temperature sensor and the ECB, to direct the ECB to turn off the electric power to the fan responsive to detecting a temperature, from the temperature sensor less than a temperature threshold based on a temperature rating of the fan.

Abstract: An apparatus (1) for opening and closing a lid (lid body) of a vehicle includes a linearly-movable shaft (10) supported by a housing (90) such that the shaft is linearly movable along, and nonrotatable around, an axial center (X10); and a rotary shaft (30) supported by the shaft such that it is linearly movable along and rotatable around the axial center. A stopper mechanism (50, 60) selectively blocks or permits the shaft to move from moving from a second position to a first position. The shaft has a main body (11) disposed within the rotary shaft (30) and an elastic body (80) provided on a terminal end portion of the main body (11). The elastic body includes a cushioning part (81) on a tip, a sealing part (83) around the main body, and a connecting part (85) connecting the cushioning part to the sealing part within the main body.

Abstract: A motorized window shade system may comprise a shade tube in a pocket; a window shade attached to the shade tube; a motor configured to rotate the shade tube; an internal temperature sensor configured to measure a first temperature of the motor; an external temperature sensor configured to measure a second temperature of the pocket; and a controller configured to adjust a mode of the system from an override mode to an automated mode.

Abstract: A motor control system includes a motor and a motor control circuitry. The motor includes a rotation axis and a bearing rotatably supporting the rotation axis. The motor control circuitry is configured to control the motor. The motor control circuitry includes a driving time adding circuit configured to add up a driving time of the motor to obtain an accumulated driving time of the motor, a remaining lifetime calculation circuit configured to calculate a remaining lifetime of the bearing based on a lifetime of the bearing and the accumulated driving time, and a warning outputting circuit configured to output warning information when the remaining lifetime is equal to or less than a threshold.

Abstract: An intelligent fan control system with interface compatibility is provided. The intelligent fan control system can identify and control fans one-to-one connected to fan slots, and each fan slot includes four pins. The intelligent fan control system includes a bus; an I2C signal switching unit including SDA outputs one-to-one connected to third pin of the fan slots via the bus; an I2C signal switching unit including SCL outputs one-to-one connected to fourth pins of the fan slots via the bus; voltage control units one-to-one corresponding to the fan slots, and having output terminals one-to-one connected to second pins of the fan slots; connection line sets, and each connection line set including four connection lines and connected to the corresponding fan slot; a control board comprising port sets, and can control and switch the I2C signal switching unit to the fan slots in sequence, to transmit the corresponding I2C signal.

Abstract: In a method for manufacturing an electric motor comprising a rotor and a stator a placeholder for a temperature sensor is inserted in the axial direction between a first coil layer and an adjacent second coil layer of a winding head such that the placeholder is situated in a gap-shaped recess extending between the first and the second coil layers, the first coil layer is then pressed onto a circumferential surface of the placeholder and onto the second coil layer and is plastically deformed such that a space between the lateral surfaces of the two coil layers and the circumferential surface of the placeholder is reduced, and a contact surface between the lateral surface of the first coil layer and the circumferential surface of the placeholder is enlarged. By removing the placeholder, a receiving chamber is subsequently formed in the winding head, into which a temperature sensor is then inserted.

Abstract: A cooling apparatus includes: a cooling circuit that includes three flow passages intersecting at an intersection point and allows a cooling liquid to circulate therethrough; a three-way valve that is disposed at the intersection point and is switchable such that any two of the three flow passages communicate with each other; and a controller that controls switching of the three-way valve. The controller includes an intermediate fixation determination unit. The intermediate fixation determination unit determines that the three-way valve is in an intermediate fixation state in which the three flow passages simultaneously communicate with one another, when a cooling liquid temperature difference between one of the two flow passages that are controlled to communicate with each other, and a remaining flow passage of the three flow passages that is not controlled to communicate, is smaller than a predetermined value.

Abstract: The overload relay units within a motor control group have the timing function for their motor thermal memories under the control of a central controller in communication with the overload relays. Thus expensive timing components and control of timestamps can be removed from individual overload relays. Further reduction of individual overload relay components can be accomplished by removing the nonvolatile memory function from the individual overload relays and allowing the central controller to perform the nonvolatile memory functions for the overload relays. The motor thermal model function for the overload relays can remain in the overload relays or might be moved to the central controller if communication bandwidth permits.

Abstract: A vehicle control system, in which that maintains a reaction force against the backward movement of a vehicle while preventing an overheating of a motor due to phase lock of the motor. When a thermal load on a specific phase of the motor exceeds a threshold value, a controller execute a phase shift control to reduce a thermal load on a specific phase of the motor by changing a rotational angle of the motor, while interrupting torque transmission between the motor and wheels and generating the torque to stop the vehicle by the actuator.

Abstract: A fan detection method, a fan detection chip and a fan detection system using the same are disclosed. The fan detection method is applied to a fan detection chip including a first pin, a second pin, a third pin, a fourth pin, and the fan is electrically coupled to the first pin, the second pin and the third pin at least. The fan detection method includes following steps: controlling a switch to selectively conduct the first pin and the second pin; controlling a pulse width modulation (PWM) signal processing module to output a voltage pulse to the fourth pin; detecting, by the voltage detection module, a voltage level on the fourth pin; and determining the fan to be a PWM fan when the voltage level is changed, and determining the fan to be a DC fan when the voltage level is not changed.

Abstract: A refrigeration appliance includes a fresh food compartment and a freezer compartment. An ice maker with an ice mold is disposed within the fresh food compartment for freezing water into ice pieces. A refrigeration system includes a system evaporator and an ice maker evaporator dedicated to cooling the ice mold. A frame rotatably supports the ice mold within the fresh food compartment between an ice-forming position and an ice-harvesting position. The frame supports the ice maker evaporator at a stationary position that serves as a pivot axis for the ice mold so the ice mold can rotate around the ice maker evaporator between the ice-forming position and the ice-harvesting position, while the ice maker evaporator remains stationary. In one example, a heater is rotatable with the ice mold, and a drip tray is located underneath ice mold and rotatable with the ice mold.

Abstract: A transmission arrangement for a motor vehicle comprises a control device, a machine power electronics system, and an electric machine. The electric machine includes a plurality of windings which are connected to the machine power electronics system via particular phase conductors. The machine power electronics system is connected to the control device. The control device includes a temperature detection portion which is connected to at least one phase conductor and is designed for feeding an excitation signal into the phase conductor. The temperature detection portion is designed for capturing a response signal in the phase conductor, and from the response signal, deriving a winding temperature of the winding assigned to the phase conductor.

Abstract: The present invention provides a method of using a current transformer for a temperature sensing device. The method determines the temperature of the current transformer's secondary winding by injecting a DC current into the secondary winding, measuring a voltage across the secondary winding, calculating the resistance of the secondary winding from the voltage induced into the secondary winding by the injected DC current and determining the secondary winding temperature by calculations or a comparison with verified resistance/temperature combinations.

Abstract: An apparatus and method for extending component life in a motor drive having a stator heating mode is disclosed. The current supplied to stator windings is cycled through a set of primary stator power transistors to increase the overall lifespan of the drive, thus preventing premature failure of the stator power transistors by splitting the workload between them, rather than having a single transistor supply the bulk of the stator heating current.

Abstract: A fan for use in agriculture which has a BLDC motor which allows for varying the speed of the fan to vary the airflow rate of the fan and vary the efficiency of the fan. A ventilation system for use in a livestock confinement building to maximize a rate of growth of the livestock. A process for maximizing the growth of livestock in a livestock confinement building by controlling the airflow in the livestock confinement building.

Abstract: A control moment gyroscope (CMG) module for use in a satellite comprising a CMG, the CMG comprising a flywheel assembly mounted on a gimbal assembly, the flywheel assembly comprising a flywheel rim, a flywheel spokes member and a flywheel shaft, the flywheel rim circumscribing the flywheel shaft, and the flywheel spokes member extending between the flywheel shaft and the flywheel rim. The gimbal assembly comprises at least one gimbal and a spin motor, the spin motor for rotating the flywheel assembly about a first axis. The CMG further comprises a torque shaft and a torque motor for rotating the at least one gimbal about a second axis. The CMG module further comprises a hermetic first shell housing; and a hermetic second shell housing; wherein the second shell housing is joined to the first shell housing by a hermetic seal to form an airtight interior of the CMG module, the interior of the CMG module containing the CMG.

Abstract: A field winding type synchronous machine connects to a DC line and includes a rotor; a stator; an exciter that passes a current through a field winding of the rotor; and a rectification circuit that rectifies an output from the exciter and provides the output to the DC line. The synchronous machine includes the field winding being connected in parallel to a first circuit in which a parallel circuit including a rectifier element and a first switchgear is connected in series to a discharge resistor, a second switchgear being connected in series to the DC line that connects the first circuit to the rectification circuit, and a capacitor being provided between the discharge resistor and the input side of an electric power source element for gating the first switchgear.

Abstract: A refrigeration appliance includes a fresh food compartment and a freezer compartment. An ice maker with an ice mold is disposed within the fresh food compartment for freezing water into ice pieces. A refrigeration system includes a system evaporator and an ice maker evaporator dedicated to cooling the ice mold. A frame rotatably supports the ice mold within the fresh food compartment between an ice-forming position and an ice-harvesting position. The frame supports the ice maker evaporator at a stationary position that serves as a pivot axis for the ice mold so the ice mold can rotate around the ice maker evaporator between the ice-forming position and the ice-harvesting position, while the ice maker evaporator remains stationary. In one example, a heater is rotatable with the ice mold, and a drip tray is located underneath ice mold and rotatable with the ice mold.

Abstract: A compressor crankcase heating control method for a heat pump system includes selectively actuating a first switching device to connect and disconnect first and second power lines to and from second and third switching devices, respectively, the first and second power lines receive a first voltage. The compressor crankcase heating control method further includes, when the first and second power lines are disconnected from the second and third switching devices via the first switching device, actuating the second and third switching devices thereby connecting third and fourth power lines to ends, respectively, of at least one winding of a stator of an electric motor of a compressor. The at least one winding of the stator of the electric motor heats the crankcase of the compressor. The third and fourth power lines receive a second voltage that is less than the first voltage.

Abstract: A compressor crankcase heating control method for a heat pump system includes selectively actuating a first switching device to connect and disconnect first and second power lines to and from second and third switching devices, respectively, the first and second power lines receive a first voltage. The compressor crankcase heating control method further includes, when the first and second power lines are disconnected from the second and third switching devices via the first switching device, actuating the second and third switching devices thereby connecting third and fourth power lines to ends, respectively, of at least one winding of a stator of an electric motor of a compressor. The at least one winding of the stator of the electric motor heats the crankcase of the compressor. The third and fourth power lines receive a second voltage that is less than the first voltage.

Abstract: A system includes a compressor having a shell housing a compression mechanism driven by an electric motor in an on state and not driven by the electric motor in an off state. The system also includes a variable frequency drive that drives the electric motor in the on state by varying a frequency of a voltage delivered to the electric motor and that supplies electric current to a stator of the electric motor in the off state to heat the compressor.

Abstract: In a motor drive device (1) the motor driving setting of which is performed by a setting display unit (20), the setting display unit (20) displays a setting content of a setting item when the setting content of the setting item is changed, and further displays related information (an input value, an output detection value, a computed value calculated by the controller) of at least one or more related items, which are related to the setting item. By using the setting display unit which simultaneously displays the setting content and the related information necessary for setting, it is possible to set the motor drive device (1) easily and quickly.