Motor control devices and methods

摘要

A system and method for preventing thermal damage to an electric motor in a vehicle includes arrangements for monitoring the motor and detecting a cycle of the motor. If the cycle occurred within a predetermined increment time, a cycle count is incremented. If no cycle occurs for a predetermined decrement time, the cycle count is decremented if the cycle count is greater than zero. If the cycle count is at least equal to a cycle limit, power operation of the motor is deactivated for at least the decrement time. The method may include continuously calculating energy consumed by the motor and, if the energy consumed exceeds one or more allowable energy thresholds, setting the cycle count equal to the cycle limit. The method may further include detecting a failure condition and setting the cycle count equal to the cycle limit when the failure condition is detected.

主权项

1. A method for preventing thermal damage to an electric motor in a vehicle, the method comprising:
monitoring the motor; detecting a cycle of the motor, wherein the cycle of the motor is a complete operation of the motor; if the cycle occurred within a predetermined increment time, incrementing a cycle count; if no cycle occurs for a predetermined decrement time, decrementing the cycle count if the cycle count is greater than zero; if the cycle count is at least equal to a cycle limit, deactivating power operation of the motor for at least the decrement time.