基于可调增益恒流源补偿网络的磁场耦合无线电能传输LED驱动电路

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Abstract

Due to the large leakage inductance of the loosely coupled transformer, compensation technology is crucial to improve the transfer efficiency in the magnetic coupled wireless power transfer (WPT) system. In the light-emitting diode (LED) lighting application, the WPT LED driver should provide not only the required LED current directly, but also zero reactive power, low device stress and soft switching. Compared with the conventional compensation network whose output current gain relies on the transformer parameters significantly, as well as the loosely coupled transformer with the constrained design,a family of novel constant-current compensation network using two-port network theory was proposed in this paper,where high freedom of current gain and transformer design were achieved by adjusting the compensation parameters. The prototypes with the same circuit topology and transformer were built to realize the output current of 0.5A, 1A, 1.5A, respectively, which agreed well with the theoretical analysis. Characteristics of these compensation networks were also analyzed in detail.

Key words： Wireless power transfer compensation network, loosely coupled transformer, adjustable current gain, light-emitting diode driver circuit

Published: 04 January 2017

PACS:

TM724

Fund:

中央高校基本科研业务费专项资金,国家自然科学基金（51677027）和江苏省自然科学基金（BK20141339）资助项目

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	Articles by authors
	Jing Yanyan¹
	Qu Xiaohui¹
	Han Hongdou¹
	Wong SiuChung²
	Tse ChiKong²

Cite this article:

Jing Yanyan¹,Qu Xiaohui¹,Han Hongdou¹等. The Magnetic Coupled Wireless Power Transfer Driver Based on Adjustable Gain Constant-Current Compensation Network[J]. Transactions of China Electrotechnical Society, 2016, 31(增刊): 1-8.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I增刊/1

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