Plug-in混合动力汽车辅助功率单元控制研究

A Study on the Control of Auxiliary Power Unit of Plug-in Series Hybrid Electric Vehicle

针对一种由汽油发动机、永磁同步发电机及不可控整流器构成的插电式混合动力汽车(Plug-in HybridElectric Vehicle,简称PHEV)辅助功率单元结构,在插电式串联混合动力汽车构型分析和选型基础上,设计了基于静态数据的前馈控制支路和PID反馈控制构成的辅助功率单元(APU)输出电流闭环控制器结构。实验结果表明,与传统PID控制相比,应用前馈+PID控制方法,辅助功率单元具有较好的输出电流动态特性,同时在一定程度上保证了发动机转速的稳定。

Aiming at structure of auxiliary power unit for plug-in hybrid electric vehicle based on gasoline engine, permanent synchronous generator and uncontrolled rectifier, based on the plug-in series hybrid vehicle configuration analysis and selection, the controller of APU output current which include feedforward control branch and PID feedback control branch is designed.The feed forward controller is constituted by the static data.The experimental results show that compared with the traditional PID control, application of feedforward and PID control, APU has better dynamic characteristics of the output current, at the same time, it ensures stability of the engine speed.