混合动力汽车用永磁式电气变速器的构建

摘要

This paper presents a novel permanent-magnet electric variable transmission （PM-EVT） with an appropriate structure for hybrid electric vehicle （HEV） applications. Such a PM-EVT is similar to the wellknown series-parallel HEV （SP-HEV） of Toyota Prius, but with more integrated functions and simpler structures, with the planetary gear also eliminated. By analyzing four possible mechanical connections and different PM positions, a simplest structure of PM-EVT was finally chosen which has one stator, one inner rotor and one outer rotor, with the stator and inner rotor having independent windings, and the PMs located on the outer rotor. The results show that different PM arrangements on the outer rotor regard the machine performances and controllabilities.%提出了一种用于混合动力汽车（HEV）动力传动系统的新型结构的永磁式电气变速器（PM-EVT）。PM—EVT是一种与Toyota Prius混合动力汽车功能相似的串并联HEY传动系统，但是功能更加集成，结构更加简单，省去了用于功率分配的行星齿轮机构。分析了PM-EVT的4种可能的机械结构组合和永磁体配置，并选择其中最简单的一种作为最终方案：具有一个外定子、一个内转子、一个外转子；外定子和内转子分别有独立的三相绕组；永磁体分布在外转子上。分析结果表明：不同的永磁体配置形式具有不同的电机性能和控制性能。