Modeling and Optimization of Class-E Amplifier at Subnominal Condition in a Wireless Power Transfer System for Biomedical Implants

CORC > 沈阳自动化研究所 > 中国科学院沈阳自动化研究所 > 机器人学研究室

	Modeling and Optimization of Class-E Amplifier at Subnominal Condition in a Wireless Power Transfer System for Biomedical Implants
	Liu H(刘浩); Shao Q(邵琪); Fang XL(方学林)
刊名	IEEE Transactions on Biomedical Circuits and Systems
	2017
卷号	11 期号:1 页码:35-43
关键词	Biomedical implants class-E amplifier efficiency improvement subnominal condition wireless power transfer system zero-voltage-switching (ZVS)
ISSN号	1932-4545
通讯作者	刘浩
产权排序	1
中文摘要	For the class-E amplifier in a wireless power transfer (WPT) system, the design parameters are always determined by the nominal model. However, this model neglects the conduction loss and voltage stress of MOSFET and cannot guarantee the highest efficiency in the WPT system for biomedical implants. To solve this problem, this paper proposes a novel circuit model of the subnominal class-E amplifier. On a WPT platform for capsule endoscope, the proposed model was validated to be effective and the relationship between the amplifier’s design parameters and its characteristics was analyzed. At a given duty ratio, the design parameters with the highest efficiency and safe voltage stress are derived and the condition is called ‘optimal subnominal condition.’ The amplifier’s efficiency can reach the highest of 99.3% at the 0.097 duty ratio. Furthermore, at the 0.5 duty ratio, the measured efficiency of the optimal subnominal condition can reach 90.8%, which is 15.2% higher than that of the nominal condition. Then, a WPT experiment with a receiving unit was carried out to validate the feasibility of the optimized amplifier. In general, the design parameters of class-E amplifier in a WPT system for biomedical implants can be determined with the proposed optimization method in this paper.
收录类别	EI
语种	英语
内容类型	期刊论文
源URL	[http://ir.sia.cn/handle/173321/19721]
专题	沈阳自动化研究所_机器人学研究室
推荐引用方式 GB/T 7714	Liu H,Shao Q,Fang XL. Modeling and Optimization of Class-E Amplifier at Subnominal Condition in a Wireless Power Transfer System for Biomedical Implants[J]. IEEE Transactions on Biomedical Circuits and Systems,2017,11(1):35-43.
APA	Liu H,Shao Q,&Fang XL.(2017).Modeling and Optimization of Class-E Amplifier at Subnominal Condition in a Wireless Power Transfer System for Biomedical Implants.IEEE Transactions on Biomedical Circuits and Systems,11(1),35-43.
MLA	Liu H,et al."Modeling and Optimization of Class-E Amplifier at Subnominal Condition in a Wireless Power Transfer System for Biomedical Implants".IEEE Transactions on Biomedical Circuits and Systems 11.1(2017):35-43.