Patent ID: 7845737

Claim:
A braking control apparatus for an electric vehicle in which an AC motor is driven by a power converter fed with a DC wiring voltage, the power converter is controlled in accordance with a braking command from a driver's seat to actuate an electric brake based on the AC motor, and a lacking part of an electric braking force is supplemented by a mechanical brake, the braking control apparatus comprising a braking device that calculates an electric braking force command in accordance with the braking command and generates a mechanical braking command, and a control circuit that calculates the electric braking force on the basis of the electric braking force command from the braking device and the braking command and controls the power converter, wherein the control circuit includes a control calculating unit that calculates the electric braking force and controls the power converter, a virtual braking force calculating unit that calculates a virtual braking force to complement the electric braking force when starting braking, on the basis of the braking command and an output of a voltage sensor for detecting an input voltage to the power converter, and an adder that adds a calculation output of the control calculating unit and a calculation output of the virtual braking force calculating unit, and wherein the mechanical braking command from the braking device is changed in accordance with an output of the adder.