Motor torque smoothing treatment method for hybrid power and a hybrid power system
AssigneeChery Automobile Co., Ltd.
InventorZhaozhou Jiang
Life of this patent
Estimating the term…
Abstract
A motor torque smoothing process method includes judging the required work mode of the motor (3) and the current work mode of the motor (3); judging the transition process of the motor (3) based on said required work mode and said current work mode; determining the smoothing time parameter of the motor torque and the target torque based on said judged transition process; calculating the increasing step length of the current output torque based on the said detailed smoothing time parameter, the target torque and the current actual output torque; therefore calculating the actual output torque based on said increasing step length and the current actual output torque.
Claims2
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.
Dependencies are inferred from the claim text.