Series-parallel coupling control method and system of hybrid power system

摘要

A series-parallel coupling control method and system for a hybrid driver are suitable for a hybrid power vehicle. The hybrid driver is used to produce a driving force to drive a load. The hybrid driver includes a first power generation unit, a second power generation unit, and a main controller. The main controller selectively controls the system to drive the load in a series power coupling mode or a parallel power coupling mode. The main controller switches between the series coupling mode and the parallel coupling mode by using rotation speed compensation or torque/power compensation. Therefore, the driven load will not suffer from sudden thrust or jerk.

主权项

1. A series to parallel coupling control method of a hybrid power system, the hybrid power system comprises a first power source, a second power source, and a power output terminal, and drives a load through the power output terminal, the series to parallel coupling control method comprises:
upon receiving a series to parallel conversion command, performing a series to parallel conversion procedure, which comprises:
connecting the second power source to the power output terminal, wherein the power output terminal is still driven by the first power source; andincreasing an output torque of the second power source, and reducing an output torque of the first power source at the same time, the rate of increasing the output torque being substantially equal to the rate of reducing the output torque.