增程式电动车分布式控制系统的研究

摘要

A distributed network control system for extended-range electric vehicle is studied. The control system consists of vehicle layer and auxiliary power unit ( APU) layer. With a vehicle control unit as its core, the vehicle layer distributes the energy requirements of vehicle according to drivers demand, while in APU layer the APU controller coordinates the operations of engine and generator, with the energy management strategies for start, stop and all normal operation conditions emphatically studied. The results of real vehicle test show that the developed system can effectively extend the electric driving range and maintain the vehicle's power performance in low SOC condition. In addition, the most operation conditions of engine will be in high-efficiency region.%研究了增程式电动车的分布式网络控制系统.该系统由整车层和辅助动力单元( APU)层组成,整车层以整车控制器为核心,根据驾驶员的需求对整车能量需求进行分配；APU层由APU控制器来协调发动机和发电机的工作.在控制策略方面,着重研究了起动、停机和各运行工况中的能量管理策略.实车试验结果证明,该系统可有效延长纯电动续驶里程,并在电池低SOC状况下维持整车动力性能,同时发动机的运行工况将大多处于高效区域.