磁谐振无线输电系统不同补偿方式的传输特性

Transmission characteristics of different compensation methods in wireless power transfer system based on magnetic coupling resonance

在无线电能传输领域,如何根据传输距离和负载要求获得最佳输出功率和传输效率是首要研究目标。从系统的谐振补偿方式角度入手,应用互感耦合理论对磁谐振无线输电系统中串-串和串-并2种补偿方式的传输特性进行了研究。首先,根据理论推导对2种谐振补偿方式的传输特性随系统参数的变化关系进行了仿真分析。然后,将2种补偿方式在不同负载和传输距离条件下的传输特性进行了比较。研究结果表明:根据不同负载大小和传输距离要求,选择合适的谐振补偿方式可使系统具有最佳的输出功率和传输效率。最后设计制作了一套磁耦合谐振式无线电能传输系统,通过实验验证了研究结论的正确性。

In the field of wireless power transfer,the optimal output power and transmission efficiency are the primary research target according to the requirements of transmission distance and load.The theory of mutual inductance was used to carry out the research on the transmission characteristics of series-series and series-parallel compensation methods.First,simulation was conducted to find the relations between transmission characteristics and the system parameters based on the theory analysis.And then,the transmission characteristics of the two compensation methods under different loads and transmission distances were compared.The research results show that the system has optimal output power and transmission efficiency by choosing the appropriate compensation method according to different requirements of loads and transmission distances.Finally,a set of magnetic coupling resonance wireless power transfer system was designed and a series of experiments were implemented in the system to verify the correctness of the research results.