Control system of auxiliary power system for a hybrid electric vehicle

摘要

The present invention relates to a control system of an auxiliary power system for a hybrid electric vehicle in which a circuit of the control system of the auxiliary power system is constructed by a digital method. The control system has a function for monitoring a battery charging state and a function for controlling an engine at a constant speed. The auxiliary power system for a hybrid electric vehicle includes an engine, a generator, a battery, and a load. The control system includes a rectifier, a first shunt circuit, a smoothing circuit, a contactor, a main control circuit portion, an engine constant-speed control portion, an auxiliary battery, DC/DC converter, a battery charge voltage monitoring portion, a control state display portion, and a second shunt circuit. The engine constant-speed control portion controls the engine at a constant speed by detecting an engine throttle position signal and an engine rpm signal, and controls the engine rpm and the engine on/off by a signal communication between itself and the main control circuit.