NDLI: Exactly analysis of ZVS behavior for class E inverter with resonant components varying

Content Provider	IEEE Xplore Digital Library
Author	Yen-Fang Li Shinn-Ming Sue
Copyright Year	2011
Description	Author affiliation: Dept. of Elec. Eng., Minghsin University of Science and Technology, Hsinchu 30401, Taiwan (Yen-Fang Li; Shinn-Ming Sue)
Abstract	Class E resonant power amplifier (or inverter) is often applied to design a high frequency switching power converter. The zero voltage switching (ZVS) or zero current switching (ZCS) operation leads the converter to high converting efficiency even the converter works at high frequency. Theoretically, with a high speed power transistor, the class E amplifier can work from several megahertzes to dozen of megahertzes. While the resonant components of class E inverter are varying, the ZVS operation will be shifting around the dominant operating point. In this paper, an exact circuit model is proposed to analyze the circuit behavior for the class E inverter. Unnecessarily mathematical assumption and complicated numerical iteration, the proposed model is easy to analyze the class E circuits in frequency domain. Through this model, a close form formula is proposed to solve the load current and drain-source end voltage of MOSFET at switching instants for steady state without a complicated numerical iterating. By this formula, the optimal and suboptimal conditions for the ZVS operation are expressed in terms of the shifting angle of load current with respect to drain-source voltage. Also, some practical design examples are given to demonstrate the formula calculating results that are good agreement with the numerical iterating results.
Starting Page	1245
Ending Page	1250
File Size	570944
Page Count	6
File Format	PDF
ISBN	9781424487547
e-ISBN	9781424487561
e-ISBN	9781424487554
DOI	10.1109/ICIEA.2011.5975776
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-21
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Zero voltage switching MOSFET circuits Inverters Steady-state RLC circuits Mathematical model Q factor ZVS drifting Resonant power converter Class E inverter zero voltage switching components varying
Content Type	Text
Resource Type	Article

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