摘要
无线电力传输(WPT)系统的核心器件为松耦合变压器,其原副边线圈间的大气隙会产生大漏感和激磁电感,从而降低输出功率和传输效率.为了补偿漏感和激磁电感,WPT系统需添加补偿网络.根据原副边补偿方式不同,采用了串串(SS)型、串并(SP)型、并串(PS)型和并并(PP)型四种基本补偿拓扑,对其输出功率、传输效率和电压增益特性进行分析,并在MATLAB中仿真验证.结果发现SS型能够承受较大的频率波动并同时保持高效率,SP型更适合负载电阻较大的系统,而PS型和PP型的传输效率、电压增益均比较低且波动较大,最终选择SS型作为最优补偿拓扑.
The core device of the wireless power transmission(WPT)system is a loosely coupled transformer,and the air gap between the primary and secondary coils generates a large leakage inductance and a magnetizing inductance,thereby reducing output power and transmission efficiency.In order to compensate for leakage inductance and magnetizing inductance,the WPT system needs to add a compensation network.According to the different compensation methods of the primary and secondary sides,the four basic compensation topologies of series-series type(SS),series-parallel type(SP),parallel-series type(PS)and parallel-parallel type(PP)were adopted,and their output power and transmission efficiency were adopted.The voltage gain characteristics were analyzed,and simulation experiments were carried out in MATLAB.It is found that the series-series type(SS)can withstand large frequency fluctuations while maintaining high efficiency.The series-parallel type(SP)is more suitable for systems with larger load resistance.The transmission efficiency and voltage gain of the parallel-series type(PS)and the parallel-parallel type(PP)are relatively low and fluctuate greatly,and finally the SS type is selected as the optimal compensation topology.
作者
汪世娇
马小三
WANG Shijiao;MA Xiaosan(School of Electrical and Information Engineering,Anhui University of Technology,Ma’anshan,Anhui 243032,China)
出处
《宜宾学院学报》
2020年第6期18-22,38,共6页
Journal of Yibin University
基金
国家自然科学基金项目(119075023)。
关键词
WPT系统
漏感
激磁电感
输出功率
传输效率
电压增益
WPT system
leakage inductance
excitation inductance
output power
transmission efficiency
voltage gain
