Patent ID: 9114698
Filing Date: 2015-08-25
Classification: B60K,B60L,B60W,Y02T

Abstract:
1. A control apparatus for a vehicle, wherein the vehicle comprises: an alternating current motor generator constituted by a permanent magnet synchronous motor; a power supply that supplies a direct current; an inverter that converts the direct current supplied from the power supply to an input stage of the inverter into an alternating current and supplies the alternating current to the alternating current motor generator; a storage unit provided at the input stage of the inverter; and a switch unit that switches an electric connection between the power supply and the input stage of the inverter between a disconnected condition and a conductive condition, the control apparatus comprising: a switching control unit that controls the switch unit; a current setting unit that sets an exciting current command value that is a target value of an exciting current component and a torque current command value that is a target value of a torque current component in accordance with an output required of the alternating current motor generator, wherein the exciting current component is a current component of the alternating current, supplied from the inverter to the alternating current motor generator, that is used to excite the alternating current motor generator and the torque current component is a current component of the alternating current, supplied from the inverter to the alternating current motor generator, that is used to apply torque to the alternating current motor generator; a current control unit that controls the exciting current component and the torque current component in accordance with the exciting current command value and the torque current command value; and a collision detection unit that detects a collision of the vehicle, wherein: when the collision of the vehicle is detected by the collision detection unit, the switching control unit controls the switch unit to switch the electric connection between the power supply and the input stage of the inverter to the disconnected condition; when a rotation speed of the alternating current motor generator is higher than an allowable rotation speed or a terminal voltage of the storage unit is higher than an allowable terminal voltage after the collision of the vehicle is detected by the collision detection unit, the current setting unit sets the exciting current command value at an exciting current discharge value determined at a value other than zero and sets the torque current command value at zero; and when the rotation speed of the alternating current motor generator is equal to or lower than the allowable rotation speed and the terminal voltage of the storage unit is equal to or lower than the allowable terminal voltage after the collision of the vehicle is detected by the collision detection unit, the current setting unit sets both the exciting current command value and the torque current command value at zero.