Patent ID: 7605552

Claim:
A control apparatus for an electric vehicle comprising: conversion means that converts a voltage of a DC power supply into a system voltage of a power supply line; an MG unit that includes an inverter connected to the power supply line and an AC motor driven by the inverter; system voltage control means that executes a system voltage stabilization control to suppress variation in the system voltage by operating an electric power supplied to the power supply line; current control means that controls a torque of the AC motor and an electric input power to the MG unit independently from each other; conversion power control means that executes a conversion power control to control the electric input power to the conversion means or a conversion power as an output power of the conversion means; conversion voltage control means that executes a conversion voltage control to control an output voltage from the conversion means; and selection means that selects one of the conversion power control and the conversion voltage control, and inhibits the system voltage stabilization control when the conversion voltage control is selected, wherein the system voltage control means includes target power operation amount calculation means that calculates a target power operation amount as a target operation amount of the electric power supplied to the power supply line, and distribution means that distributes the target power operation amount to an MG power operation amount command value for controlling the MG unit and to a conversion power operation amount correction value for controlling the conversion power, wherein the conversion power control means controls the conversion power based on the conversion power operation amount correction value, and wherein the current control means controls the MG unit based on the MG power operation amount command value.