POWER LIMITING FOR MOTOR CURRENT CONTROLLERS

摘要

A motor controller a pulse-width modulation (PWM) circuit, a power limit circuit, and an inverter. The PWM circuit is configured to output initial count outputs based on a current command. The power limit circuit includes a peak current detector, a divider, and a dynamic limiter. The power limit circuit is configured to provide updated count outputs based on the initial count outputs, a sensed current, and a power threshold. The inverter is controlled by the updated count outputs and configured to provide output power to a motor. The sensed current is sensed from the output power to the motor.

主权项

1. A motor controller comprising:
a pulse-width modulation (PWM) circuit configured to output initial count outputs based on a current command; a power limit circuit configured to provide updated count outputs based on the initial count outputs, a sensed current, and a power threshold; and an inverter controlled by the updated count outputs and configured to provide output power to a motor; wherein the sensed current is sensed from the output power to the motor.