采用新型负载恒流供电复合谐振网络的无线电能传输系统
Wireless Power Transfer System Using Composite Resonant Network for Constant-current Power Supply of Load
-
摘要: 针对传统LC谐振拓扑无线电能传输(WPT)系统在负载动态变化时,无法实现负载恒流供电及系统工作频率失谐问题,提出一种新型一次侧LCL、二次侧LCC复合谐振网络无线电能传输系统。首先,在基波条件下,依据漏感模型建立了磁路机构等效电路,得到了谐振频率和输出电流表达式;然后,通过系统参数优化设计,进一步推导出了复合谐振网络中实现负载恒流供电以及系统谐振工作频率稳定的条件。仿真结果表明,基于参数优化设计的新型复合谐振网络无线电能传输系统,能够实现负载无线恒流供电,并且系统工作频率稳定。实验结果验证了理论分析和仿真分析的正确性和有效性。Abstract: As the wireless power transfer（WPT）system based on the conventional LC resonant topology can not realize constant-current power supply to load when it is varied dynamically and bypass the problem of system operating frequency detuning,a WPT system with a novel composite resonant network is proposed in which the primary side is LCL resonant topology and the secondary side is LCC resonant topology.Firstly,the equivalent circuit of the magnetic circuit agencies is established according to the leakage inductance model,and equations of the resonant frequency and the output current are obtained.Then,the requirements of constant-current power supply and stable operating frequency of WPT system are obtained by system parameter optimization.Finally,the simulation results verify that the parameter optimization based WPT system with the novel composite resonant network is able to realize constant-current power supply and stable operating frequency.The experimental results show the correctness and effectiveness of the theoretical and simulation analysis.
下载:
