Patent ID: 8798827

Claim:
A method for smoothing a torque of a motor in a hybrid power, comprising: determining, by an HCU, a demanded operation mode and a current operation mode of the motor; determining, by the HCU, from the demanded operation mode and the current operation mode, conversion between the operation modes of the motor, wherein the operation modes comprise an idle mode, a first motoring mode, a second motoring mode, a power generation mode, and a regenerative brake mode; determining, by the HCU, whether the demanded operation mode does not change at least in four operation cycles of the HCU; determining, by the HCU, a time parameter for smoothing the torque of the motor and a target torque according to the demanded operation mode if the demanded operation mode does not change at least in the four operation cycles of the HCU; and calculating, by the HCU, an incremental step of a current actual output torque from the time parameter and the difference between the target torque and the current actual output torque, and further calculating an actual output torque from the incremental step and the current actual output torque; wherein the conversion between the operation modes of the motor comprises conversion into the idle mode, and conversion from the idle mode; wherein determining, by the HCU, the time parameter for smoothing the torque of the motor and the target torque according to the demanded operation mode comprises: determining, by the HCU, the time parameter for smoothing the torque of the motor and the target torque according to the demanded operation mode if the conversion is conversion into the idle mode; determining, by the HCU, the time parameter for smoothing the torque of the motor from the determined demanded operation mode and determining that the target torque is an actual demanded torque if the conversion is conversion from the idle mode; and determining, by the HCU, that the time parameter for smoothing the torque of the motor is 170 ms and determining that the target torque is the actual demanded torque if the operation mode of the HCU does not change.