OUTPUT CONTROL METHOD FOR HYBRID STARTER AND GENERATOR OF HYBRID ELECTRIC VEHICLE

摘要

The present invention relates to a power generation output control method for an integrated starter and generator. The main purpose of the present invention is to provide a power generation output control method for an integrated starter and generator, capable of improving NVH performance, preventing additional expenses for improving NVH performance and reducing costs, size and weight thereof in the process of controlling power generation output of the integrated starter and generator. To achieve the purpose, the present invention provides a power generation output control method for an integrated starter and generator which is connected to an engine in a hybrid electric vehicle to be able to transmit a rotational force, comprising the steps of: receiving, with a controller, vehicle state information for determining the drive mode of a vehicle after the departure of the vehicle and judging a drive mode requiring the rise of power generation output from the received vehicle state information; judging that the rise of power generation output is required by the drive mode and determining power generation output variation control for each drive mode of the integrated starter and generator; determining a torque command and torque application time corresponding to the required output for each drive mode of the vehicle for the power generation output variation control; and controlling the power generation output of the integrated starter and generator by applying the determined torque command during the application time. [Reference numerals] (AA) Vehicle departure; (BB) Gearshift position; (CC) Clutch connection; (DD) Wheel speed sensor signal value, Motor speed sensor signal value; (EE) Temperature sensor signal value; (S11) Judge gearshift stage; (S12) Judge drive mode; (S13) Judge requirement for a rise in power generation output; (S14) Determine output variation control ?; (S15) Apply a torque command for a required output; (S16) Monitor the temperature of an HSG coil; (S17) Coil temperature >= 150 degrees ?; (S18) Torque application time >= 10 seconds ?; (S19) End power generation output variation control; (S20) Reduce power generation output