纯电动汽车用直流无刷轮毂电机试验台架的研究与开发

Study and development of test-bed for brushless DC hub-motor used in EV

为解决应用于纯电动汽车上的轮毂电机测试和试验的问题,将虚拟仪器技术应用于轮毂电机性能测试与再生制动试验台的设计中。开展了试验台组成结构、测控系统工作原理的分析,设计了测控系统电路,推导了电机转速、电机扭矩、电流、电压的测量计算公式,提出了电机再生制动试验方法及试验数据的计算公式;在此基础上采用LabVIEW开发了测控系统软件,并进行了实际运行实验。实验结果证明,该试验台设计较为合理,能够将电机的性能测试试验与再生制动试验合二为一,满足了电动汽车轮毂电机相关研究的需求。

In order to solve the problems of performance testing and regenerative braking experiment for hub-motor of electric vehicle （EV）, the virtual instrument technology was applied to design the test-bed for hub-motor of EV. After the analysis of the composition of the test-bed and the theory of constitution of the observer and control system, the peripheral circuit was designed. Computational formula for motor rev, motor torque, electric current, electric tension was deduced. The method of regenerative braking experiment and computational formula was presented. On this basis, LabVIEW was presented to develop software for the observer and control system. The experimental data results show that the design of the test-bed is reasonable. Hub-motor performance test and motor regenerative braking test are realized on this test-bed. It can meet the demand of experiments of hub-motor of EV.