【摘要】 感应电能传输(inductive power transfer, IPT)系统中需要引入谐振补偿网络来消除电路中的无功损耗，而固定参数下的谐振补偿网络往往只能实现恒压或者恒流源输出，输出类型单一且不具有可控性。为解决这一问题，将常用的LCC型拓扑改进为LCCC型拓扑，并建立数学模型分析该拓扑的电路特性；其次，利用高频开关电容变换器取代单一的补偿电容，实现输出电压调节，并分析多阶受控开关电容(switch-controlled capacitor, SCC)变换器电路的工作原理以及开关管的移相调制条件；最后通过仿真和实验验证该IPT系统的可行性与有效性。仿真和实验结果表明：所构建的三SCC结构的LCCC-S型IPT系统具有软开关特性，控制方式简单；在不同负载和互感的条件下，可定向调节输出电压；在松耦合系数较低的情况下，系统的仿真效率平均为91.51%(最高为92.96%),实验效率平均为80.6%(最高为83.43%);调节过程中可以使IPT系统始终处于弱感性状态，保证了IPT系统在实现输出调整的同时依然具有较低的无功损耗。更多还原

【Abstract】 The inductive power transfer(IPT) system has to use resonance compensation network to eliminate the reactive power loss, but the resonant compensation network with fixed parameters can only output constant voltage/current and the output types have no controllability. In order to solve this problem, the common LCC topology was improved into an LCCC topology, and a mathematical model was established to analyze the circuit characteristics of this topology. Then, a high frequency switching capacitor converter was used to replace the single compensation capacitor to realize voltage output adjustment. Meanwhile, the working principle of multi-order switch-controlled capacitor(SCC) circuit and phase shifting condition of the switching tube was analyzed. Finally, the feasibility and effectiveness were verified by simulation and experiments.The results show that the LCCC-S IPT system with three SCC structures has the characteristic of soft switching and it is easily controlled. Under the conditions of different loads and mutual inductance, the output voltage can be directional adjusted. In the case of low loose coupling coefficient, the average simulation efficiency of the system is 91.51%, the highest is 92.96%, the average experimental efficiency is 80.6% and the highest is 83.43%. During the modulation process, the IPT system can always be in weak inductive state, which ensures low reactive power loss while realizing output adjustment.更多还原