Patent ID: 7653466
Filing Date: 2010-01-26
Classification: B60K,B60L,B60W,Y02T

Abstract:
1. A control apparatus for an electric vehicle comprising: a power converter for converting a voltage supplied by a DC power supply into a system voltage appearing on a power supply line; a MG unit as a motor driving unit, the MG unit including (i) an inverter connected to the power supply line and (ii) an AC motor driven by the inverter; a system voltage controller for executing system voltage stabilization control by adjusting a power required in generation of a torque in the AC motor employed in the MG unit by an input power different from the power required in generation of a torque in order to suppress variations in the system voltage, the input power being determined to maintain the torque of the AC motor constant; and a rotation speed detector for detecting a rotation speed of the AC motor, wherein, the system voltage controller selects, during execution of the system voltage stabilization control, a leading side or a lagging side, on which at least one of a current flowing to the AC motor and a voltage applied to the AC motor is to be adjusted, in accordance with at least one of the rotation speed detected by the rotation speed detector and a torque generated in the AC motor.