电动汽车用混合励磁电机数字驱动系统的研究

A New Hybird Excitation Machine Digital Drive System for Electric Vehicles

针对电动汽车对电机驱动系统具有较高转速、转矩特性的要求,设计出了基于混合励磁电机的电动汽车驱动系统。分析了混合励磁电机的优势并在此基础上提出了相应的控制策略,着重介绍了系统的硬、软件实现方案。整个电动汽车电机驱动系统采用转速、电流双闭环控制,以TMS320F2812型DSP作为核心控制器件,包括主电路功率模块、系统安全保护模块、CAN通信模块等部分,最后通过实验验证了系统的可行性与优越性。

Electric vehicle motor drive system should have good torque and speed characteristics. In order to meet these requirements, a new electric vehicle motor drive system based on hybrid excitation brushless DC motor （HEBLDCM） is designed. This paper also presents a detailed control strategy and hardware and software implementation scheme. The whole contorl system selects the DSP2812 as the core chip, including main circuit power module, system security detecting module, CAN communication module etc. The experimental results have verified the feasibility of the system.