兰州交通大学毕业设计(论文) Abstract For the purpose of developing and producing AC drive system which appropriate to national conditions, the study of systems and components in a comprehensive and deeply way is also an important part. Power testing and performance testing on AC drive inverter, AC traction motor, converter control system and a rail car full vehicle control are needed. As domestic basic test platform, the basic structure and internal power supply system model of domestic CRH2 type EMU are introduced firstly, power-consuming and power-feed AC drive test are raised. The type of component parts on reciprocal power-feed test platform is chosen after the main parameters of AC drive test platform are determined. Finally, powerconsuming AC drive test platform is selected to simulation. Based on slip frequency vector control strategies is selected to adjust synchronous motors, meanwhile, by adjusting the load of DC generator, the load torque on asynchronous motors is regulated indirectly which plays a load effect in the simulating. Simulation results show that: power-consuming test platform is extremely effective only for some small power transmission platform, design and system simulation with existing is consistent to high-power AC drive experimental platform. In the trend of AC drive will replace DC converter with a wide range, design on AC drive test platform with multiple functions has obvious practical significance. Key Words: AC drive system, Test platform, Vector control, Simulated load - II -