提出一种具有强电磁耦合特性的电磁耦合无级变速器,介绍了其工作原理和电磁特性。针对该装置接电池和不接电池的两种配置结构,分别讨论了可能的工作模式.基于内转子绕组与定子绕组之间的互感可忽略的特点,推导出BCVT的数学模型.利用提出的电磁计算公式,给出了两重气隙磁场的磁通密度、反电动势、磁通和齿槽转矩的稳态曲线.通过对其接电池时的瞬态工况仿真,验证了工况分析的合理性。在同等车载条件下与常规自动变速器相比,装有电磁耦合无级变速器的车辆有更好的燃油经济性。
An electromagnetic continuously variable transmission (ECVT) which had strong electromagnetic coupling characteristic was proposed. Its work principle and electromagnetic characteristic were introduced. Based on the two cases which were with battery and without battery, the possible operating modes were discussed. Since the mutual reluctances between the AC windings of the inner rotor and stator were negligible, the mathematical model of the ECVT was developed. With the proposed analytical electromagnetic equations, the effects such as flux density, back-EMF, flux linkage and cogging torque in the two air gaps were plotted. The transient simulation results of the ECVT with battery illustrated the feasibility of the operating mode analysis. The vehicle with the ECVT has better fuel economy compared with a vehicle with a conventional automatic transmission.