摘要：在分析电动汽车车载条件下，基于双能量源的永磁同步电机系统在驱动与制动能量回收过程中的若干特性。与普通电驱动系统的区别在于，该双能量源系统由超级电容和动力电池组合而成，因此双能源的组成拓扑结构和功率分配方案就直接影响到电机驱动和制动的特性。通过给出的组合方式和控制策略，该系统可有效地实现电动汽车加速与制动时为电机提供加速能量以及高效回收电机制动能量，并能够做到能量在超级电容和动力电池的合理分配。仿真结果验证了该系统的可行性与有效性。
关键词：永磁同步电机；能量回收；动力电池；超级电容；双能量源；双向DC_DC电路
Abstract: Several features of driving and braking of permanent magnet synchronous motor with dual power source in electric vehicle was analyzed in this paper. Compared with the general electric drive system, the dual power source system is composed of ultracapacitor and power battery. Then the driving and braking of motor will be directly influenced by the topology and power distribution strategy of dual power source system. The dual power system can provide the ability of efficiently offering power and recovering power according to starting, accelerating and braking through the combining method and control strategy presented in this paper. At same time, the power was distributed reasonably between ultracapacitor and power battery. The feasibility and effectiveness of the system was verified by the simulation results.
Key words: permanent magnet synchronous motor；energy recovery；power battery；ultracapacitor；double power source；bidirectional DCDC circuit