Patent ID: 9610858
Date: 2017-04-04
CPC Classifications: B60L,H02M,Y02T,Y10S

Claim:
1. A method, comprising: determining, at a controller of an electrified vehicle (EV), the controller including one or more processors, three-phase AC currents at an electric motor of the EV, wherein the EV includes a three-phase inverter configured to convert a direct current (DC) from a battery system of the EV to the three-phase AC currents for the electric motor of the EV; sensing, at the controller via a position sensor, a rotational position of the electric motor; determining, at the controller, an output voltage vector based on the three-phase AC currents, reference currents, and the rotational position of the electric motor, wherein the reference currents are based on a torque request for the electric motor, a speed of the electric motor, and a DC voltage output by the battery system; selecting, at the controller, one of two zero-voltage vectors for the three-phase inverter based on the output voltage vector; and controlling, by the controller, switching of the three-phase inverter using the selected zero-voltage vector.