基于LCCL谐振变换器拓扑的新型经颅磁刺激电容器充电电源设计

doi:10.19595/j.cnki.1000-6753.tces.211693

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Abstract To increase the frequency of transcranial magnetic stimulation (TMS) electrical current pulses, a kind of capacitor charging power supply (CCPS) based on inductor-capacitor-capacitor- inductor resonant converter (LCCL RC) is proposed in this paper. Firstly, the approximate expressions of the LCCL RC constant current output and the zero-phase condition of the inverter output voltage and current are derived by first harmonic approximation. Secondly, the design conditions of the converter with smaller physical size resonant network size and larger current gain are analyzed. According to the simulation, the pulse frequency of TMS system using LCCL RC as charging power supply is 1.21 times that of LCLC RC. Finally, a prototype with an average output current of 1.15A and a power of 118.37W is designed. It is shown that the actual current gain of the prototype is 0.904, and the time to charge the 3 300μF storage capacitor from 0V to 100V is 315ms. Compared with the LCLC RC capacitor charging power supply, the charging time is reduced by 21.25%. The experimental results verify the theoretical analysis.

Key words： Capacitor charging power supply resonant converter transcranial magnetic stimu- lation constant current source high current gain

Received: 25 October 2021

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TM154

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	Xiong Hui
	Qin Taotao
	Liu Jinzhen

Cite this article:

Xiong Hui,Qin Taotao,Liu Jinzhen. Design of New Transcranial Magnetic Stimulation Capacitor Charging Power Supply Based on LCCL Resonant Converter Topology[J]. Transactions of China Electrotechnical Society, 2022, 37(18): 4757-4765.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.211693 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I18/4757

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