抗偏移动态非接触供电技术恒电压输出研究

Research on Constant-Voltage Output of Anti-offset Dynamic Non-contact Supply Technology

非接触供电技术在轨道交通中能解决线路磨损、恶劣环境等因素对列车供电带来的危害,但轨道的弯曲、不平整会对动态非接触供电系统输出电压造成极大波动,影响系统的可靠性、安全性。为此,设计了一种单发射双拾取磁耦合机构,实现系统偏移时输出电压的平稳,并通过Maxwell软件对磁耦合机构的参数进行优化。最后搭建500W的小型轨道交通非接触试验平台来验证理论的正确性,整个系统输出电压波动为±3.38%,效率达到了91.373%。

The wireless power transfer technology can effectively solve the harm to the train power supply caused by factors such as line wear and harsh environment in rail transit.However,the curvature and unevenness of the track will cause great fluctuations in the output voltage of the dynamic non-contact power supply system,affecting the reliability and safety of the system.Based on this,a single-emitter and dual-pickup magnetic coupling mechanism was designed in this paper.The parameters of the magnetic coupling mechanism were optimized through Maxwell software.Finally,a 500 W non-contact experimental platform for small rail transit was established to verify the correctness of the theory.The output voltage of the entire system fluctuated by plus or minus 3.38% and the efficiency reached 91.373%.