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| Small-Signal Model for Inductive Power Transfer Systems Using LCC-S Compensation |
| Zheng Guangce1,2,3, Zhao Kai1,2,3, Wang Haoyu1, Liang Junrui1, Fu Minfan1 |
1. School of Information Science and Technology ShanghaiTech University Shanghai 201210 China;
2. Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201210 China;
3. Shanghai Engineering Research Center of Energy Efficient and Custom AI IC Shanghai 201210 China |
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Abstract An inductive power transfer (IPT) system requires a feedback controller to stabilize the output, which highly depends on an accurate small-signal model. In the past years, the extended describing function (EDF) is widely used to address the modeling issue for resonant converters. However, the high-order resonant tank of IPT would lead to a complicated model if EDF is directly applied. In order to simplify the model, this paper explored a circuit-based method to reduce the order for both series and parallel resonant circuits. An example LCC-C compensated system was used to explain the concept. This general simplification can be extended to any other high-order IPT systems.
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Received: 12 August 2021
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2022, Vol. 37 
