Hardware and Thermal Design of Medium-low Speed Maglev Traction Converter

As the core device of medium-low speed maglev trains, the traction converter plays a crucial role in energy conversion and drive control. Its design quality directly affects the performance and stable operation of the train. In this paper, the design of traction converter is carried out from the hardware design, the main circuit topology is determined first. Based on the system requirements, this paper calculates the parameter of devices in detail, and the device selection is completed. Then, the internal devices are reasonably arranged, the independent air duct is designed for the high-power consumption device, and the integrated design of the traction converter is completed. The thermal loss analysis is performed, and approximate formulas of IGBT loss are derived. At last, thermal design and simulation verification of traction converter are carried out based on Icepak. The results show that the design of medium-low speed maglev traction converter in this paper is reasonable and has good heat dissipation function.