CURRENT-VOLTAGE LIMIT METHOD OF MOTOR CONTROL UNIT FOR FUEL CELL

摘要

A current-voltage limit method of a motor control unit for a fuel cell is provided to restrict a current and voltage of a DC link of an inverter by using a motor controller. A motor controller receives a current limit command of a DC link and a voltage limit command of the DC link from an upper controller. The motor controller calculates a current limit scale factor based on the received current limit command of the DC link and a inverter current of the DC link. The motor controller calculates a voltage limit scale factor based on the received voltage limit command of the DC link and an inverter voltage of the DC link. The current limit scale factor and voltage limit scale factor are multiplied by a torque order value received from the upper controller. The drive motor(15) is controlled by the compensated torque order value.