Patents Assigned to Power Systems, Inc.
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Publication number: 20220140671Abstract: A rotor core lamination is provided. The rotor core lamination includes a plurality of salient poles. Each of the salient poles includes: a pole body having a central axis in a radial direction of the rotor core lamination; and a pole shoe extending radially outward from the pole body, wherein the pole shoe has a pole shoe arc, and a central point of the pole shoe arc is offset from the central axis.Type: ApplicationFiled: October 29, 2020Publication date: May 5, 2022Applicant: Generac Power Systems, Inc.Inventor: David William Pollock
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Patent number: 11317564Abstract: A battery-operated mower is provided that includes a chassis supporting a first drive wheel and a second drive wheel, a battery pack, a first electric drive wheel motor interconnected to the first drive wheel and second electric drive wheel motor interconnected to the second drive wheel; one or more electric blade motors; an electric cooling fan in fluid communication with at least one of the first electric drive wheel motor and second electric drive wheel motor; one or more controllers for controlling the rotational speed of the first electric drive wheel motor, the second electric drive wheel motor, and the blade motors; and a left control actuator in communication with a first throttle sensor and a right control actuator in communication with a second throttle sensor, wherein the first throttle sensor and second throttle sensor are in communication with the one or more controllers.Type: GrantFiled: October 30, 2018Date of Patent: May 3, 2022Assignee: Generac Power Systems, Inc.Inventors: Joseph C. Conrad, Matthew C. Conrad
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Publication number: 20220123584Abstract: A load shed module configured to be connected in series between a power supply and a load is disclosed. A separate load shed module is connected in series between each load and the power supply. The load shed module determines the frequency of the voltage supplied from the power supply. Based on the frequency, the load shed module determines if utility power is connected or if a generator is connected. If the generator is connected and the frequency of the voltage goes outside of a desired operating range for a preset time, the load shed module disconnects the load from the power supply. Each load shed module includes a priority setting and reconnects its corresponding load after a predetermined time corresponding to the priority setting.Type: ApplicationFiled: July 29, 2021Publication date: April 21, 2022Applicant: Generac Power Systems, Inc.Inventors: Brendan Pancheri, Greg Wischstadt, Robert Iles, Andy Phillips, Taesik Yu, Sungmin Lee
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Patent number: 11310879Abstract: A feedback control circuit in an LED driving circuit for driving a plurality of LED strings. Each LED string provides a headroom detecting voltage. The feedback control circuit has a status detecting circuit, a counting circuit and a modulating circuit. The status detecting circuit compares each headroom detecting voltage with a low headroom threshold voltage and a high headroom threshold voltage and generates an up self-status signal and a down self-status signal. The counting circuit counts or keeps unchanged and then generates a counting signal based on the up self-status signal and the down self-status signal. The modulating circuit generates a modulating signal based on the counting signal. And based on the modulating signal, the feedback control circuit generates a feedback control signal to regulate a bias voltage supplying the plurality of LED strings.Type: GrantFiled: February 5, 2021Date of Patent: April 19, 2022Assignee: Monolithic Power Systems, Inc.Inventors: Junjian Zhao, Chia-Lung Ni, Zheng Luo, Yu-Huei Lee, Huan Liu
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Publication number: 20220115900Abstract: An automatic transfer switch includes a first conduction bar selectively coupled with a first power source and a load conduction bar; a second conduction bar selectively coupled with a second power source and the load conduction bar; a first blade assembly electrically coupled to the first conduction bar; and a second blade assembly electrically coupled to the second conduction bar. The first blade assembly is electrically coupled to a first source conduction bar in a closed position, and a first electromagnetic force induced by a first current flowing through the first blade assembly and the first conduction bar repulses the first blade assembly. The second blade assembly is electrically coupled to a second source conduction bar in a closed position, and a second electromagnetic force induced by a second current flowing through the second blade assembly and the second conduction bar repulses the second blade assembly.Type: ApplicationFiled: August 2, 2021Publication date: April 14, 2022Applicant: Generac Power Systems, Inc.Inventors: Nick Brusky, Joseph Gerovac
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Patent number: 11303204Abstract: A trans-inductor voltage regulator (TLVR) circuit has multiple phases and a switching circuit for each phase. Each switching circuit has a winding of a transformer as an output inductor. The other windings of the transformers are connected in series with a nonlinear compensation inductor. An on-time period of each switching circuit is reduced when a load transient condition occurs or when a load current starts to be stable after the load transient condition.Type: GrantFiled: January 7, 2021Date of Patent: April 12, 2022Assignee: Monolithic Power Systems, Inc.Inventors: Tao Zhao, Hang Shao, Dianbo Fu, Daocheng Huang
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Patent number: 11292352Abstract: In one aspect, an electric vehicle (EV) charging system includes: a plurality of first converters to receive grid power at a distribution grid voltage and convert the distribution grid voltage to at least one second voltage; at least one high frequency transformer coupled to the plurality of first converters to receive the second voltage and electrically isolate a plurality of second converters. The EV charging system may further include the plurality of second converters coupled to the output of the at least one high frequency transformer to receive and convert the at least one second voltage to a third DC voltage. At least some of the plurality of second converters are to couple to one or more EV charging dispensers to provide the third DC voltage as a charging voltage or a charging current.Type: GrantFiled: April 30, 2021Date of Patent: April 5, 2022Assignee: Resilient Power Systems, Inc.Inventors: Josh Keister, Lyle T. Keister, Mehdi Abolhassani
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Publication number: 20220100250Abstract: Datacenter power management using edge mediation is disclosed. A datacenter power policy is provided to a centralized power management platform. The policy oversees a datacenter topology that includes energy control blocks. Each of the energy control blocks comprises an energy control block coupled to one or more datacenter loads. A power control gateway is coupled between the centralized power management platform and the one or more of energy control blocks. The power control gateway comprises one gateway element for each of the one or more energy control blocks. Each gateway element includes a policy execution component, a sensor data exchange component, a data summarization component, and a global state analysis component. Sensor data from the energy control blocks is summarized and forwarded to the centralized power management platform. Power distribution to the one or more datacenter loads is controlled using inter-gateway element information distributed among each gateway element.Type: ApplicationFiled: September 29, 2021Publication date: March 31, 2022Applicant: Virtual Power Systems Inc.Inventors: Karimulla Raja Shaikh, Andrey Ilinykh
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Publication number: 20220093784Abstract: The present disclosure describes vertical transistor device and methods of making the same. The vertical transistor device includes substrate layer of first conductivity type, drift layer of first conductivity type formed over substrate layer, body region of second conductivity type extending vertically into drift layer from top surface of drift layer, source region of first conductivity type extending vertically from top surface of drift layer into body region, dielectric region including first and second sections formed over top surface, buried channel region of first conductivity type at least partially sandwiched between body region on first side and first and second sections of dielectric region on second side opposite to first side, gate electrode formed over dielectric region, and drain electrode formed below substrate layer. Dielectric region laterally overlaps with portion of body region. Thickness of first section is uniform and thickness of second section is greater than first section.Type: ApplicationFiled: November 18, 2021Publication date: March 24, 2022Applicant: Monolithic Power Systems, Inc.Inventors: Vipindas PALA, Sundarsan UPPILI
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Patent number: 11282959Abstract: A FET device has a substrate, a plurality of repetitive source stripes, a first layout of drain stripe having a first drift region and a first drain region, a second layout of drain stripe having a second drift region and a second drain region, a first drain contactor contacted with the first drain region and connected to a drain terminal, a second drain contactor contacted with the second drain region and connected to a first gate terminal, a source contactor contacted with a source region in each of the plurality of repetitive source stripes and connected to a source terminal, a first gate region positioned between the source region and the first drain region and connected to the first gate terminal, and a second gate region positioned between the source region and the second drain region and connected to a second gate terminal.Type: GrantFiled: July 17, 2020Date of Patent: March 22, 2022Assignee: Monolithic Power Systems, Inc.Inventors: Eric Braun, James Nguyen
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Patent number: 11274634Abstract: A thermal choke, includes (1) a body, comprising a heat conductive material, (2) an electric heater, on or in the body, (3) a temperature sensor, on or in the body, and (4) a fin, in a channel surrounded by the body. The thermal choke is configured to fit between a throttle assembly and a cylinder of a spark ignition engine.Type: GrantFiled: June 26, 2018Date of Patent: March 15, 2022Assignee: INI Power Systems, Inc.Inventors: Larry J. Markoski, Timothy C. Simmons
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Patent number: 11258368Abstract: A control method for regulating the switching frequency of a resonant converter having an input terminal to receive an input voltage and an output terminal to output an output voltage. The control method is sensing the input voltage and adjusting the switching frequency based on the comparison of the input voltage with a reference threshold voltage. When the input voltage is less than the reference threshold voltage, the switching frequency is adjusted to decrease, and when the input voltage is higher than the reference threshold voltage, the switching frequency is adjusted to increase.Type: GrantFiled: June 10, 2020Date of Patent: February 22, 2022Assignee: Monolithic Power Systems, Inc.Inventors: Jian Jiang, Di Han
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Patent number: 11248540Abstract: An internal combustion engine-based system includes an internal combustion engine. The internal combustion engine-based system includes an engine interrupt connected to the engine. The engine interrupt is configured to selectively stop the operation of the engine. The internal combustion engine-based system includes a controller in communication with the engine interrupt. The internal combustion engine-based system includes a carbon monoxide detector in communication with the controller. The controller uses the engine interrupt to stop the operation of the engine when the carbon monoxide detector provides the controller with signals that are representative of a carbon monoxide level proximate the internal combustion engine that together form a trend of building carbon monoxide amounts over a set time interval.Type: GrantFiled: December 9, 2019Date of Patent: February 15, 2022Assignee: Generac Power Systems, Inc.Inventors: Gregory A. Wischstadt, Adam M. Schroeder, Mitchell L. Horn, Brandon Schmidt, Kevin Cole, Tod R. Tesch
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Patent number: 11228183Abstract: The present disclosure is directed to self-synchronizing devices that can connect and self-synchronizes voltage, frequency and phase of two or more power sources. The disclosed embodiments enable a modular power system to serve as the primary or secondary source of power for applications requiring loads from a few kilowatts (kW) to the scale of megawatts (MW). The modular system is generalized to use either a single or multiple power generation sources at once, with the ability to connect and self-synchronize voltage, frequency, and phase of a variety of different types of power sources. Power control systems designed to function with self-synchronizing technology enable a modular power system to satisfy a wide variety of needs, simplifying the existing method of achieving synchronization and enabling new features of resiliency and expandability. The self-synchronization can be implemented into a wide variety of electronics including but not limited to inverters and generator controllers.Type: GrantFiled: April 20, 2021Date of Patent: January 18, 2022Assignee: Renew Power Systems Inc.Inventors: Gregory S. Mowry, Zachary J. Emond, Daniel J. O'Connor, Victoria D. Farias, Carol D. Mikhael
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Patent number: 11227728Abstract: An automatic transfer switch includes a motor and a drive shaft rotatable by the motor. The automatic transfer switch includes a gear rotatable by the drive shaft. The automatic transfer switch includes a pin attached to, and movable with, the gear. The pin is offset from the central axis of the gear. The automatic transfer switch includes a bracket rotatable around the central axis of the gear and connected to an output shaft. The bracket is rotatable separately from the gear. Upon rotation of the bracket, the output shaft rotates. The bracket has at least a first source position and a second source position and the first and second source positions are different. The automatic transfer switch includes a module connected to the output shaft. The module includes at least one movable electrical contact which moves upon rotation of the output shaft.Type: GrantFiled: February 5, 2021Date of Patent: January 18, 2022Assignee: Generac Power Systems, Inc.Inventors: Debra J. Miller, Joseph Peter Gerovac, Joseph M. Finney, Nicholas P. Brusky
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Patent number: 11223276Abstract: A voltage converter with a high side power switch, having: an off control circuit, having a first input terminal configured to receive an input voltage, a second input terminal configured to receive an output voltage, a third input terminal configured to receive a current representing signal indicative of a current flowing through the high side power switch, a fourth input terminal configured to receive an on-set signal in response to an on operation of the high side power switch, and an output terminal configured to provide an off control signal to indicate an end of an on time period of the high side power switch; wherein the on time period of the high side power switch is regulated by the input voltage, the output voltage and the current representing signal.Type: GrantFiled: October 30, 2020Date of Patent: January 11, 2022Assignee: Monolithic Power Systems, Inc.Inventor: Wen Cai
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Publication number: 20220004248Abstract: Voltage regulators generate voltage rails that power a central processing unit (CPU). The CPU communicates power management instructions to a power supply controller that drives the voltage regulators. The power supply controller sets a voltage level of a voltage rail generated by a voltage regulator in accordance with a power management instruction received from the CPU. The power supply controller enables the voltage regulator to operate in discontinuous conduction mode (DCM) independent of power state commands from the CPU.Type: ApplicationFiled: July 1, 2020Publication date: January 6, 2022Applicant: Monolithic Power Systems, Inc.Inventor: I-Fan CHEN
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Patent number: 11211484Abstract: The present disclosure describes vertical transistor device and methods of making the same. The vertical transistor device includes substrate layer of first conductivity type, drift layer of first conductivity type formed over substrate layer, body region of second conductivity type extending vertically into drift layer from top surface of drift layer, source region of first conductivity type extending vertically from top surface of drift layer into body region, dielectric region including first and second sections formed over top surface, buried channel region of first conductivity type at least partially sandwiched between body region on first side and first and second sections of dielectric region on second side opposite to first side, gate electrode formed over dielectric region, and drain electrode formed below substrate layer. Dielectric region laterally overlaps with portion of body region. Thickness of first section is uniform and thickness of second section is greater than first section.Type: GrantFiled: February 10, 2020Date of Patent: December 28, 2021Assignee: Monolithic Power Systems, Inc.Inventors: Vipindas Pala, Sundarsan Uppili
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Patent number: 11201459Abstract: An eFuse for use in high voltage applications is disclosed. In one embodiment, an apparatus includes a solid-state switch having source and drain terminals connected to switch a load current from a high voltage source through a high voltage load. The apparatus also includes a sense circuit that senses a voltage between the switch source and drain terminals and turns off the switch when the voltage exceeds a selected voltage level.Type: GrantFiled: May 1, 2020Date of Patent: December 14, 2021Assignee: Motiv Power Systems, Inc.Inventors: Venkatesh Prasad Hanglur Narasimha, James Michael Castelaz
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Patent number: 11191137Abstract: An LED driving system with a master-slave architecture. The LED driving system has at least two LED driving circuits which both have a first status detecting circuit, a second status detecting circuit and a first feedback control circuit. The first status detecting circuit receives a plurality of headroom detecting voltages provided by a plurality of LED strings and generates at least one self-status signal. The second status detecting circuit receives a downstream feedback signal and generates at least one downstream status signal. The first feedback control circuit generates a first feedback control signal based on the at least one self-status signal and the at least one downstream status signal. The second status detecting circuit of one LED driving circuit is coupled to the first feedback control circuit of the other LED driving circuit.Type: GrantFiled: March 31, 2021Date of Patent: November 30, 2021Assignee: Monolithic Power Systems, Inc.Inventors: Junjian Zhao, Chia-Lung Ni, Zheng Luo, Yu-Huei Lee, Huan Liu