SYSTEMS AND METHODS FOR MANAGING TORQUE CAPABILITY IN ELECTRIC MOTOR SYSTEMS
First Claim
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1. A method for operating an electric motor, comprising the steps of:
- receiving a torque request;
determining long term torque capabilities and short term torque capabilities of the electric motor;
generating a torque command based on the torque request and at least one of the long term torque capabilities or the short term torque capabilities; and
controlling the electric motor in accordance with the torque command.
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Abstract
A method for operating an electric motor is provided. The method includes receiving a torque request; determining long term torque capabilities and short term torque capabilities of the electric motor; generating a torque command based on the torque request and at least one of the long term torque capabilities or the short term torque capabilities; and controlling the electric motor in accordance with the torque command.
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Citations
20 Claims
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1. A method for operating an electric motor, comprising the steps of:
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receiving a torque request;
determining long term torque capabilities and short term torque capabilities of the electric motor;generating a torque command based on the torque request and at least one of the long term torque capabilities or the short term torque capabilities; and controlling the electric motor in accordance with the torque command. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electronic control system configured to operate an electric motor, comprising:
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a torque controller configured to determine long term torque capabilities and short term torque capabilities associated with the electric motor; a vehicle controller coupled to the torque controller and configured to receive a torque request and to generate a torque command based on the torque request and at least one of the long term torque capabilities or the short term torque capabilities; and an inverter module coupled to the vehicle controller and configured to receive the torque command and to drive the electric motor according to the torque command. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. An electronic control system configured to operate an electric motor, comprising:
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a torque controller configured to determine nominal long term torque capabilities and nominal short term torque capabilities associated with the electric motor, to calculate reduction factors, and to limit the nominal long term torque capabilities and the nominal short term torque capabilities to produce modified long term torque capabilities and modified short term torque capabilities; a vehicle controller coupled to the torque controller and configured to receive a torque request and generate a torque command, and wherein, in a first mode, the vehicle controller is configured to generate the torque command based on the torque request and the modified long term torque capabilities and, in a second mode, the vehicle controller is configured to generate the torque command based on the torque request and the modified short term torque capabilities; and an inverter module coupled to the vehicle controller and configured to receive the torque command and to drive the electric motor according to the torque command.
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Specification