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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HEV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。
A new type of permanent magnet electro-mechanical transmission (PM-EVT) for hybrid electric vehicle (HEV) powertrain is proposed. The PM-EVT is a series-parallel HEV drive similar in function to the Toyota Prius hybrid, but with more integrated functions and a simpler configuration, eliminating the need for a planetary gear mechanism for power distribution. Four possible mechanical structure combinations and permanent magnet configurations of PM-EVT were analyzed and the simplest one was selected as the final solution: an outer stator, an inner rotor and an outer rotor. The outer stator and the inner rotor had Independent three-phase winding; permanent magnets distributed on the outer rotor. The analysis results show that different permanent magnet configurations have different motor performance and control performance.