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针对混合动力汽车中传统双转子永磁同步电机存在散热困难、动态输出性能不理想的问题,文中提出了一种基于双功率流定子永磁型电机的混合动力系统方案。在分析系统的工作原理和多工况模式的基础上,对双功率流电机的结构尺寸进行了设计计算。通过有限元的方法对电机的重要结构参数进行了优化,对电机的磁链、反电势以及电感等电磁性能进行了全面深入的仿真分析。分析表明,电机结构参数和电磁参数设置合理。通过场路耦合法建立了电机驱动控制系统的瞬态联合仿真模型,仿真结果表明该电机继承了定子永磁型双凸极电机的特点,输出转矩大小达到设计要求,该混合动力系统方案具有可行性。
Aiming at the problem that the traditional double-rotor permanent magnet synchronous motor in hybrid vehicle has the problems of heat dissipation and unsatisfactory dynamic output performance, a hybrid system scheme based on dual-power flow stator permanent magnet motor is proposed in this paper. Based on the analysis of the working principle and multi-working mode of the system, the design and calculation of the structure size of the dual-power flow motor are carried out. The important structural parameters of the motor are optimized by the finite element method, and the electromagnetic characteristics of the motor such as flux linkage, back EMF and inductance are thoroughly analyzed. Analysis shows that the motor structure parameters and electromagnetic parameters set reasonable. The transient joint simulation model of the motor drive control system is established by the field-circuit coupling method. The simulation results show that the motor inherits the characteristics of the stator permanent-magnet doubly salient motor and the output torque reaches the design requirement. The hybrid system has feasibility.