Controlling The Test Bench For The System Of Motor Drive On EV Based On The LabVIEW

The project of developing a test bench for the system of motor drive on Electric Vehicle (EV) comes from the lab of EV in North China University of Technology, including the design of hardware and software. The aim of this project is to control and test the electromotor of the motor drive system and simulate the drive cycle of EV, set up a software controlling and testing bench for the parameter match and the control strategy optimize in dynamical system.Traditional motor test bench is not satisfied with the requirement of the system of motor drive on EV. So the EV test bench project is imperative under the situation. We make the test depending on the feature of the system of drive on EV, and found the test bench combining CAN bus with the technology of virtual instrument. Meanwhile, with the help of powerful ability of the computer in data process, realizing the communication, controlling, testing and the simulation of the drive cycle of EV.The test bench includes the dynamometer and control, the motor of being tested and control, the sensor of rotate speed and torque, the apparatus of analysis power as well as other parts. The system of communication and measurement is designed, and software is written by Lab VIEW through the design of module, the important modules which are particularly designed are collecting data and communication, control, test and the management of data. Then, simulate the important half-material parts by matlab/simulink, such as, the system of dynamometer and controller, the system of motor and controller, the sensor of rotate speed and torque, the apparatus of analysis power, and combine with the worldwide important drive cycle standard in modern times, as a example of SAE J227a in USA, analyze the rotate speed and torque in 5 drive cycle, for the logical design of EV establish the basis of theory.The design of test bench for the system of motor drive on EV, provides a reliable platform for EV in controlling and performance testing of the motor drive system and the simulation of drive cycle. This bench provides condition for developing high performance EV, and has a positive significance to EV development.