为更深入地了解混合动力汽车用复合结构电机的发展趋势和关键技术,对复合结构电机及其关键技术进行综述,简要分析了有刷、无刷两类复合结构电机的组成、工作原理及其拓扑结构,并对不同复合结构电机方案的优势及其存在的关键技术问题进行深入分析和总结.结果表明:基于复合结构电机的纯电气式混合动力方案不仅可以避免基于行星齿轮的机械式混合动力方案中的振动、噪声、磨损和定期维护等问题,而且具有结构简单紧凑、易于控制的优势.无刷复合结构电机去掉了有刷复合结构电机中的电刷滑环机构,提高了系统可靠性,因此复合结构电机无刷化是该研究方向的必然发展趋势.
To gain a deep insight into the development tendency and the key technology of compound-structure electrical machine for hybrid electric vehicles,this paper reviews the compound-structure electrical machine and its key technologies. The composition,operating principle and topologies of different compound-structure electrical machines are analyzed,including the brush and brushless ones. Meanwhile,the advantages and key technology problems of different compound-structure machines are investigated and summarized. The results show that the purely-electrical hybrid schemes based on the compound-structure electrical machine don't have the problems of vibration,noise,wear and regular maintenance,but they also have advantages of simple and compact structure and easy control,compared with the mechanical hybrid schemes based on the planetary gear. Meanwhile,they also show that the investigation of the brushless compound-structure electrical machine must be a development tendency in this field for the brushless compound-structure electrical machines can get rid of brushes and slip rings in the brush ones as well as improve the system stability.