Patent ID: 8432118
Filing Date: 2013-04-30
Classification: H02P

Abstract:
1. A method for controlling an electric motor, the method comprising: receiving a commanded torque provided by a vehicle controller, generating motor phase currents for application to an electric motor based on the commanded torque; detecting motor phase currents applied to the electric motor by an inverter; measuring voltages applied to the electric motor by the inverter; outputting output signals of the detected motor phase currents and measured voltages at an output port of an inverter for processing by the vehicle controller; the output signals suitable for input to the vehicle controller for determining whether or not to generate an override control signal; and receiving the override control signal via an input port of an inverter from the vehicle controller, the input port coupled to an override input module for switching off a supply of electrical energy to the electric motor solely based on an evaluation of the detected motor phase currents and measured voltages at the output port.