标题：Study on efficiency of different topologies of magnetic coupled resonant wireless charging system
作者：Cui, S.; Liu, Z. Z.; Hou, Y. J.; Zeng, H.; Yue, Z. K.; Liang, L. H.
作者机构：[Cui, S.; Liu, Z. Z.; Zeng, H.; Yue, Z. K.; Liang, L. H.] Shandong Univ, Sch Elect Engn, Jinan 250061, Shandong, Peoples R China.; [Hou, Y. J.] Shan 更多
会议名称：2nd International Conference on New Energy and Future Energy System (NEFES)
会议日期：SEP 22-25, 2017
来源：2017 INTERNATIONAL CONFERENCE ON NEW ENERGY AND FUTURE ENERGY SYSTEM (NEFES 2017)
摘要：This paper analyses the relationship between the output power, the transmission efficiency and the frequency, load and coupling coefficient of the four kinds of magnetic coupled resonant wireless charging system topologies. Based on mutual inductance principle, four kinds of circuit models are established, and the expressions of output power and transmission efficiency of different structures are calculated. The difference between the two power characteristics and efficiency characteristics is compared by simulating the SS (series-series) and SP (series-parallel) type wireless charging systems. With the same parameters of circuit components, the SS structure is usually suitable for small load resistance. The SP structure can be applied to large load resistors, when the transmission efficiency of the system is required to keep high. If the operating frequency deviates from the system resonance frequency, the SS type system has higher transmission efficiency than the SP type system.