Patent ID: 7443117

Claim:
A control apparatus for an electric vehicle comprising: a conversion means that converts a voltage supplied by a DC power supply into a system voltage appearing on a power supply line; an MG unit that includes an inverter connected to the power supply line and drives an AC motor; a current control means for controlling a torque of the AC motor and an input electric power to the MG unit independently from each other; a system voltage control means for executing a system voltage stabilization control to control an electric power input to the MG unit so as to suppress variation in the system voltage by sending a command value for controlling the input electric power to the current control means; a conversion power control means for executing a conversion power control to control a conversion power, which is an input electric power or an output power of the converter means from the converter means; a conversion voltage control means for executing a conversion voltage control to control the voltage output from the converter means; and a selection means for selecting execution of either the conversion power control or the conversion voltage control, and for inhibiting execution of the system voltage stabilization control when the conversion voltage control is selected.