Voltage overshoot mitigation
AssigneeGM Global Technology Operations LLC
InventorsChandra S. Namuduri, Suresh Gopalakrishnan
Life of this patent
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Abstract
A system for controlling an electric motor includes a voltage regulation device connected to the electric motor, the electric motor connected to an inverter by a power cable including at least one electrical conductor. The voltage regulation device includes a diode bridge circuit configured to mitigate overvoltage transients at the electric motor. The diode bridge circuit includes an alternating current (AC) input and a direct current (DC) output, the AC input connected to a terminal of the electric motor.
Claims20
A system for controlling an electric motor, comprising:
- a voltage regulation device connected to the electric motor, the electric motor connected to an inverter by a power cable including at least one electrical conductor, the voltage regulation device including a diode bridge circuit configured to mitigate overvoltage transients at the electric motor, the diode bridge circuit including an alternating current (AC) input and a direct current (DC) output, the AC input connected to a terminal of the electric motor.
A method of controlling an electric motor, the method comprising:
- controlling switching devices of an inverter connected to a battery pack, to convert direct current (DC) from the battery pack to alternating current (AC);
- transmitting the AC current to the electric motor by a power cable connected to the inverter and the electric motor, the power cable including at least one electrical conductor;
- and
- mitigating overvoltage transients by a voltage regulation device connected to the electric motor, the voltage regulation device including a diode bridge circuit, the diode bridge circuit including an AC input and a DC output, the AC output connected to a terminal of the electric motor.
A vehicle system comprising:
- a memory having computer readable instructions;
- and
- a processing device for executing the computer readable instructions, the computer readable instructions controlling the processing device to perform a method including:
- controlling switching devices of an inverter connected to a battery pack, to convert direct current (DC) from the battery pack to alternating current (AC);
- transmitting the AC current to an electric motor by a power cable connected to the inverter and the electric motor, the power cable including at least one electrical conductor;
- and
- mitigating overvoltage transients by a voltage regulation device connected to the electric motor, the voltage regulation device including a diode bridge circuit, the diode bridge circuit including an AC input and a DC output, the AC input connected to a terminal of the electric motor.
Dependencies are inferred from the claim text.