METHOD AND SYSTEM FOR CONTROLLING AN ELECTRIC MACHINE

    公开(公告)号:US20240396488A1

    公开(公告)日:2024-11-28

    申请号:US18792789

    申请日:2024-08-02

    Abstract: A control system for a rotary electric machine includes an inverter including a plurality of power switches, a heat exchanger, first temperature sensors arranged to monitor the power switches, a second temperature sensor arranged to monitor the heat exchanger, and a controller. An expected power loss is determined based upon electric current, switching functions, and electrical characteristics of the power switches. A plurality of power capacity terms are determined based upon the expected power loss in the inverter, the temperatures of the power switches, and the temperature of the heat exchanger. The inverter is controlled based upon the aforementioned power capacities.

    Method and system for controlling an electric machine

    公开(公告)号:US12126293B2

    公开(公告)日:2024-10-22

    申请号:US17971851

    申请日:2022-10-24

    CPC classification number: H02P29/68 H02P27/08

    Abstract: A control system for a rotary electric machine includes an inverter including a plurality of power switches, a heat exchanger, first temperature sensors arranged to monitor the power switches, a second temperature sensor arranged to monitor the heat exchanger, and a controller. An expected power loss is determined based upon electric current, switching functions, and electrical characteristics of the power switches. A plurality of power capacity terms are determined based upon the expected power loss in the inverter, the temperatures of the power switches, and the temperature of the heat exchanger. The inverter is controlled based upon the aforementioned power capacities.

    ELECTRIC-ROTATING-MACHINE CONTROL APPARATUS
    7.
    发明公开

    公开(公告)号:US20240266984A1

    公开(公告)日:2024-08-08

    申请号:US18398940

    申请日:2023-12-28

    Inventor: Hayato TANABE

    CPC classification number: H02P29/0241 H02J7/0063 H02J7/14 H02P27/06 H02P29/68

    Abstract: The electric-power conversion apparatus includes



    an electric-power conversion circuit having two or more legs in each of which there are provided a positive-polarity switching device, a negative-polarity switching device, and an external connection point at which the positive-polarity switching device and the negative-polarity switching device are connected in series with each other and that is connected with an electric rotating machine,
    a capacitor connected with a positive electrode and a negative electrode,
    a voltage sensor for detecting a voltage between the positive electrode and the negative electrode,
    a temperature sensor for detecting a temperature of the electric-power conversion circuit, and
    a control unit that on/off-controls the switching devices in the electric-power conversion circuit and that performs protective control in the case where a voltage detected by the voltage sensor is larger than a determination voltage calculated based on a temperature detected by the temperature sensor.

    Fan controller
    8.
    发明授权

    公开(公告)号:US12058836B2

    公开(公告)日:2024-08-06

    申请号:US17324534

    申请日:2021-05-19

    Abstract: Fan controller (1) for a modular power supply having a fan (13). An output (8) is provided for transmitting control signals to the fan (13) for controlling fan speed. A plurality of sensor modules (20) are associated with a respective module (11, 6, 7) of the modular power supply. Each sensor module (20) includes a temperature detecting circuit comprising a sensor for sensing temperature variations in the respective module (11, 6, 7), a fan control circuit (30) galvanically isolated from the temperature detecting circuit for outputting a control signal to the output (8) for controlling the fan (13), and an optocoupler (10,9) for transferring an output signal from the temperature detecting circuit (20) to the fan control circuit (30) for generating the control signal.

    POWER CONTROL UNIT FOR ELECTRIC VEHICLE
    10.
    发明公开

    公开(公告)号:US20240244790A1

    公开(公告)日:2024-07-18

    申请号:US18690467

    申请日:2022-10-05

    Inventor: Masahiro KAKO

    Abstract: A power control unit for electric vehicle includes an inverter for controlling a voltage supplied to a vehicle driving motor from a high-voltage battery. A DC/DC converter reduces the voltage of the high-voltage battery to a voltage capable of charging a low-voltage battery serving as a power supply for an in-vehicle auxiliary machine. The power control unit has a circuit board including first electrical circuit elements that constitute the inverter or the DC/DC converter and second electrical circuit elements together with the first electrical circuit elements. The unit further comprises a heat sink for cooling the first electrical circuit elements, a water pump for circulating a refrigerant in a refrigerant passage of the heat sink, and a water pump control circuit for controlling the operation of the water pump.

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