Small-Signal Model of an Inductive Power Transfer System Using LCC-LCC Compensation
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作者
Zheng, Guangce; Zhao, Peng; Li, Heyuan; Fu, Minfan
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刊物名称
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
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年、卷、文献号
2022, 58, 0093-9994
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关键词
Zheng, Guangce; Zhao, Peng; Li, Heyuan; Fu, Minfan
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摘要
The LCC-LCC compensation is widely used in the inductive power transfer systems. However, there is no simple and accurate small-signal equivalent circuit model for this resonant converter. Based on the extended describing function method, this article proposed a full-order (17th-order) equivalent circuit model to accurately predict the small-signal behaviors. For simplification, the full-order model is gradually simplified to a ninth-order model and finally to a fifth-order model. The input to output transfer function are analytically derived for the first time. Both simulation and experimental results are presented to justify the effectiveness of the model, and the model is accurate up to one-fifth of the switching frequency.
