Control apparatus for electric vehicles
AssigneeDenso Corporation
InventorsTsuneyuki Egami, Keiichi Kawakami, Takashi Ogawa
Life of this patent
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Abstract
In a hybrid vehicle control apparatus, a motor control unit executes a system voltage stabilization control, in which an input power to a MG unit is controlled to suppress variations in the system voltage. The motor control unit executes the input power control on the MG unit independently from a torque control on an AC motor so that the input power control and the torque control are stabilized. Before a smoothing capacitor is sufficiently, a conversion voltage control is executed to control an output voltage of a voltage booster converter while prohibiting the system voltage stabilization control. After the pre-charging of the capacitor, the conversion voltage control is changed to the conversion power control.
Claims13
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.
Dependencies are inferred from the claim text.