具有感应加热功能的无线电能传输系统

Wireless energy transmission system with induction heating function

为实现车内饮品加热及电子设备充电,提出了具有感应加热功能的无线电能传输系统。当系统负载为金属锅具时可实现感应加热,为电子设备时可实现无线电能传输。采用串联谐振的高频逆变感应加热系统与串-串补偿拓扑结构的磁耦合谐振无线电能传输系统的发射端一致,感应加热系统和无线电能传输系统即可共用一个发射端,从而节约了成本,减小了体积。针对磁耦合无线电能传输二次侧负载端电压随负载值大小改变而改变的问题,利用互感耦合模型进行理论分析,提出了在一次侧电压与二次侧电流之间的零相角频率下的变负载恒压充电设计,进一步分析了系统效率与工作频率、负载电压、耦合系数的关系。通过Simulink搭建仿真电路模型,其仿真结果和理论分析具有较好的一致性,验证了零相角频率下的变负载恒压充电设计的正确性和有效性。

In order to realize the heating of drinks in the car and charge the electronic equipment,a wireless energy transmission system with an induction heating function is proposed.Induction heating can be achieved when the system is loaded with a metal pot,and wireless energy can be transmitted when the load is electronic.The induction heating system using the high frequency inverter with series resonance is consistent with the transmitter end of the magnetically coupled resonant wireless energy transmission system with the series-series compensation topology,and the induction heating system and the wireless energy transmission system can share a transmitter,thus saving the cost and reducing the volume.Aiming at the problem that the magnetic coupling radio can transmit the two lateral load end voltage changing with the load value,the variable load constant voltage charging design at the zero phase angular frequency between the primary side voltage and the two lateral current is proposed by the mutual inductance coupling model for theoretical analysis.The relationship between the efficiency of the system and the operating frequency,load voltage and coupling coefficient is further analyzed.Finally,the simulation circuit model is built by Simulink,and the simulation results and theoretical analysis have good consistency,which verifies the correctness and validity of the constant pressure charging design of the variable load at the zero phase angular frequency.