非接触电能传输系统电容补偿机理研究

Study on mechanism of capacitor compensated methods for the contactless power transmission system

基于磁耦合谐振非接触电能传输系统中几种不同的电容补偿方式,分析了接收端采用不同补偿方式时反射阻抗与频率的关系,探讨了发射端补偿电容的优化条件,推导了不同补偿方式下系统传输功率的表达式,进一步分析了补偿方式对传输功率的影响。理论分析与仿真结果表明,发射端采用串联补偿、接收端采用并联补偿时,非接触电能传输系统性能最佳。

This paper introduced some kinds of compensation methods of the magnetic coupling resonance contactless power transmission （CPT） system, analyzed the relationship between reflected impedance and frequency as well as the choice of original side compensation capacitor, derived expressions of transmission power when the CPT system use different compensation methods. Through analysis and simulation, results shows that the CPT system is optimized when the transmitter coil using series compensation, and the receive coil using parallel compensation.