Patents Assigned to Power Systems, Inc.
  • Patent number: 11364811
    Abstract: A controller generates a target motor torque and target accessory power information during operation of an electric vehicle. The target motor torque and target accessory power information maintain a DC-link of the electric vehicle powertrain within a safe DC-link operating range. The DC-link has a DC-link voltage that is used to supply an accessory device and a motor. The accessory device is disposed on the electric vehicle and includes vehicle indictors, hydraulics, or any other accessory involved in the operation of the vehicle. The motor drives the vehicle. The controller receives the DC-link voltage, motor speed, desired output torque information, desired accessory power information, and the safe DC-link operating range and generates therefrom the target motor torque and the target accessory power information.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: June 21, 2022
    Assignee: Motiv Power Systems, Inc.
    Inventors: Elias Stein, Tai-Sik Hwang, Justin Tomlin, James Michael Castelaz
  • Patent number: 11362519
    Abstract: A system includes a break-before-make automatic transfer switch (ATS) configured to selectively couple a utility grid and at least one distributed generator (e.g., a plurality of paralleled generators) to a load bus such that, in a state transition of the ATS, the utility grid and the at least one distributed generator are both disconnected from the load bus before the utility grid or the at least one distributed generator is connected to the load bus. The system further includes at least one converter configured to be coupled to the load bus and configured to provide power to the load bus during the state transition of the ATS.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: June 14, 2022
    Assignee: Flexgen Power Systems, Inc.
    Inventors: Pasi Taimela, Robert William Johnson, Jr.
  • Patent number: 11347300
    Abstract: 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: Grant
    Filed: July 1, 2020
    Date of Patent: May 31, 2022
    Assignee: Monolithic Power Systems, Inc.
    Inventor: I-Fan Chen
  • Publication number: 20220158539
    Abstract: A method of measuring an AC input voltage at an input of a power converter includes measuring a DC bus voltage corresponding to the power converter. During a positive half-cycle of the AC input voltage, the method includes measuring a first voltage at the input of the power converter. During a negative half-cycle of the AC input voltage, the method includes turning on a high-side switch, measuring a second voltage at the input of the power converter, and computing a third voltage equal to the second voltage minus the DC bus voltage. The method further includes providing the AC input voltage as the first voltage during the positive AC half-cycle and the third voltage during the negative AC half-cycle.
    Type: Application
    Filed: November 11, 2021
    Publication date: May 19, 2022
    Applicant: NexGen Power Systems, Inc.
    Inventor: Anders Lind
  • Publication number: 20220158559
    Abstract: A controller for controlling a switching power converter having an input for receiving a periodic input signal and an output for providing a substantially constant output voltage to a load includes a monitor device configured to compare a switching time interval or a switching frequency with a predetermined threshold value to obtain a comparison result and a parameter recorder configured to record an entry criteria in response to the comparison result, wherein the entry criteria indicates a transition of the switching power converter from a variable switching frequency state to a constant switching frequency state.
    Type: Application
    Filed: November 11, 2021
    Publication date: May 19, 2022
    Applicant: NexGen Power Systems, Inc.
    Inventor: Anders Lind
  • Publication number: 20220158546
    Abstract: An apparatus for controlling a power converter operable to receive a cyclically varying input signal includes a discrete-time, on-time generator coupled to the power converter and configured to regulate an output voltage of the power converter and a controller configured to compare the output voltage of the power converter against a first predetermined range to: obtain a comparison result at a zero-crossing of the cyclically varying input signal and select one of a plurality of operation levels of the discrete-time, on-time generator in response to the comparison result. The plurality of operation levels includes a linear, discrete-time operation level and a nonlinear, discrete-time operation level.
    Type: Application
    Filed: November 11, 2021
    Publication date: May 19, 2022
    Applicant: NexGen Power Systems, Inc.
    Inventor: Anders Lind
  • Publication number: 20220158547
    Abstract: An apparatus for controlling a power converter includes a controller configured to detect an error in an output voltage of the power converter at a zero-crossing of a cyclically varying input signal and a compensator coupled to the controller and the power converter and configured to regulate the output voltage of the power converter in response to the error.
    Type: Application
    Filed: November 11, 2021
    Publication date: May 19, 2022
    Applicant: NexGen Power Systems, Inc.
    Inventor: Anders Lind
  • Publication number: 20220158560
    Abstract: A method of setting a synchronous rectifier on-time value includes determining that a time interval has occurred, receiving a number of triangular current mode (TCM) pulses measured during the time interval, and determining a pulse comparison value equal to a number of switching period pulses during the time interval minus the number of TCM pulses during the time interval. The method also includes increasing the synchronous rectifier on-time if the pulse comparison value is greater than or equal to a threshold and decreasing the synchronous rectifier on-time if the pulse comparison value is less than the threshold.
    Type: Application
    Filed: November 11, 2021
    Publication date: May 19, 2022
    Applicant: NexGen Power Systems, Inc.
    Inventor: Anders Lind
  • Publication number: 20220158561
    Abstract: A power converter includes an input coupled to an inductor, a first switch coupled to a first comparator, and a second switch coupled to a second comparator. The power converter also includes a pulse comparison counter coupled to the first comparator and the second comparator and a synchronous rectifier (SR) calculator coupled to the pulse comparison counter. The synchronous rectifier calculator is operable to modify a conduction time of the first switch during a first AC half-cycle and modify a conduction time of the second switch during a second AC half-cycle.
    Type: Application
    Filed: November 11, 2021
    Publication date: May 19, 2022
    Applicant: NexGen Power Systems, Inc.
    Inventor: Anders Lind
  • Patent number: 11336113
    Abstract: An electric power system is disclosed herein. The electric power system may manage and store electric power and provide uninterrupted electric power, derived from a plurality of electric power sources, to an electric load. The electric power system may contain an energy storage unit and generator assembly. The electric power system may connect to a power grid and renewable energy sources, and may charge the energy storage unit using the power grid, renewable energy sources, and/or generator assembly. The electric power system may be configured to determine load power usage and environmental factors to automatically and continuously modify a charging protocol to, for example, provide high efficiency and/or self-sufficiency from the power grid. The electric power system may operate entirely off-grid and may provide electricity to the load without interruption to power.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: May 17, 2022
    Assignee: Blue Power Systems, Inc.
    Inventors: Ramon A. Caamano, Gregory P. Miller
  • Publication number: 20220149720
    Abstract: A self-oscillating converter includes a power transistor coupled to a primary winding for controlling current flow in the primary winding, and a turn-on circuit configured to turn on the power transistor for maintaining oscillation in the self-oscillating converter. The self-oscillating converter also includes a turn-off circuit configured to turn off the power transistor to maintain an on-time of the power transistor at a pre-set value for power factor correction, and modulate the on-time of the power transistor to regulate the output current in the load device.
    Type: Application
    Filed: October 11, 2021
    Publication date: May 12, 2022
    Applicant: NexGen Power Systems, Inc.
    Inventor: Charles Coles
  • Patent number: 11329556
    Abstract: A multi-input single output power system for outputting an output voltage on an output node. It includes a first integrated circuit (IC) converter device and a second IC converter device. The first IC converter device has a first pin to receive a first input voltage, a second pin to output the output voltage, and a first power unit coupled between the first pin and the second pin. The second IC converter device has a first pin to receive a second input voltage, a second pin to output the output voltage, a second power unit coupled between the first pin of the second IC converter device and the second pin of the second IC converter device, and a third pin. The third pin receives an external phase shedding control signal to determine whether to stop the second power unit from providing power to the output node.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: May 10, 2022
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Heng Yang, Yi Sun, Thomas Fenn
  • Publication number: 20220140671
    Abstract: 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: Application
    Filed: October 29, 2020
    Publication date: May 5, 2022
    Applicant: Generac Power Systems, Inc.
    Inventor: David William Pollock
  • Patent number: 11317564
    Abstract: 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: Grant
    Filed: October 30, 2018
    Date of Patent: May 3, 2022
    Assignee: Generac Power Systems, Inc.
    Inventors: Joseph C. Conrad, Matthew C. Conrad
  • Publication number: 20220123584
    Abstract: 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: Application
    Filed: July 29, 2021
    Publication date: April 21, 2022
    Applicant: Generac Power Systems, Inc.
    Inventors: Brendan Pancheri, Greg Wischstadt, Robert Iles, Andy Phillips, Taesik Yu, Sungmin Lee
  • Patent number: 11310879
    Abstract: 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: Grant
    Filed: February 5, 2021
    Date of Patent: April 19, 2022
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Junjian Zhao, Chia-Lung Ni, Zheng Luo, Yu-Huei Lee, Huan Liu
  • Publication number: 20220115900
    Abstract: 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: Application
    Filed: August 2, 2021
    Publication date: April 14, 2022
    Applicant: Generac Power Systems, Inc.
    Inventors: Nick Brusky, Joseph Gerovac
  • Patent number: 11303204
    Abstract: 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: Grant
    Filed: January 7, 2021
    Date of Patent: April 12, 2022
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Tao Zhao, Hang Shao, Dianbo Fu, Daocheng Huang
  • Patent number: 11292352
    Abstract: 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: Grant
    Filed: April 30, 2021
    Date of Patent: April 5, 2022
    Assignee: Resilient Power Systems, Inc.
    Inventors: Josh Keister, Lyle T. Keister, Mehdi Abolhassani
  • Publication number: 20220100250
    Abstract: 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: Application
    Filed: September 29, 2021
    Publication date: March 31, 2022
    Applicant: Virtual Power Systems Inc.
    Inventors: Karimulla Raja Shaikh, Andrey Ilinykh