NDLI: Development of compact rapid capacitor charging power supply for TMS

Content Provider	IET Digital Library
Author	Xiong, Hui Wang, Yuling Liu, Jinzhen Chen, Yimei Ji, Yue
Abstract	To improve the stimulation efficiency of transcranial magnetic stimulation (TMS) and reduce the size and power consumption of the overall circuit, a compact and efficient capacitor charging power supply using an inductor–capacitor–inductor–capacitor resonant converter (LC–LC RC) is designed in this study. The LC–LC RC has the characteristics of low power consumption, high efficiency and uses the voltage gain of the resonant circuit itself and a voltage doubler rectifier circuit instead of the transformer to reduce the size and weight of the overall circuit. A detailed ac analysis with fundamental frequency approximation of the LC–LC RC is presented. Expressions for converter gain, operating condition of the converter as a constant-current power supply, and condition of the converter voltage and current zero-phase difference are derived. In addition, RC design value conditions for the minimum resonant network size are derived. An experimental 1.05 A 120 V prototype converter is designed, developed, and tested to verify the theoretical analysis. Experimental results indicate that this circuit is suitable for use in capacitor charging to increase the stimulation performance of TMS.
Starting Page	2651
Ending Page	2657
Page Count	7
ISSN	17554535
Volume Number	13
e-ISSN	17554543
Issue Number	Issue 12, Sep (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/13/12
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2020.0032
Journal	IET Power Electronics
Publisher Date	2020-06-05
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Analogue Circuit Approximation Theory Biomagnetic Signal Compact Rapid Capacitor Charging Power Supply Constant Current Sources Constant-current Power Supply Converter Gain Converter Voltage Current 1.05 A Efficient Capacitor Charging Power Supply Electrical Activity in Neurophysiological Processes Electrical/electronic Equipment Energy Utilisation Fundamental Frequency Approximation Inductor–capacitor–inductor–capacitor Resonant Converter Interpolation And Function Approximation LC Circuit LC–LC RC Low Power Consumption Low Power Electronics Numerical Analysis Numerical Approximation And Analysis Power Electronics Power Supply Power Supply Circuit RC Circuit RC Design Value Condition Rectifying Circuit Resonant Circuit Resonant Network Resonant Power Converter Stimulation Efficiency Supervisory Circuit Switching Converter TMS Transcranial Magnetic Stimulation Voltage 120.0 V Voltage Doubler Rectifier Circuit Voltage Multipliers Zero-phase Difference
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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