NDLI: A novel passive lossless soft-switching snubber for PWM inverters

Content Provider	IEEE Xplore Digital Library
Author	Wang Qiang Zhang Huaguang Chu Enhui Hou Limin
Copyright Year	2009
Description	Author affiliation: College of information Science and Engineering, Northeastern University, Shenyang 110004, China (Wang Qiang; Zhang Huaguang; Chu Enhui; Hou Limin)
Abstract	This paper presents a novel passive lossless snubber circuit for pulse-width modulation (PWM) inverters to achieve soft-switching purposes without an extra switch and additional control circuitry. This novel passive lossless soft-switching snubber employs an inductor/capacitor snubber circuit for each switching device in an inverter to achieve passive zero-current turn on and zero-voltage turn off. Furthermore, instead of conventional bulky transformer coupling for energy recovery, three inductors coupled tightly on a single core are used to losslessly recover snubber energy to the input in the proposed snubber. In addition, freewheeling of output phase current of inverters can be realized via energy storage components in the snubber in the dead-time and the effect of dead-time is reduced. The distortion ratio of the output phase current in low output frequency is also reduced. All components in the snubber circuit are passive, thus having a better price/performance ratio than their active counterparts. The snubber has been incorporated into a PWM inverter. Experimental results are given to demonstrate the validity and features of the snubber circuit.
Starting Page	2020
Ending Page	2025
File Size	312894
Page Count	6
File Format	PDF
ISBN	9781424427222
DOI	10.1109/CCDC.2009.5191991
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-17
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Passive Snubbers Switches Transformer cores Pulse circuits Inductors Switching circuits Pulse width modulation inverters Soft-switching Coupling circuits Zero-current turn on Pulse inverters Switched capacitor circuits Zero-voltage turn off Snubber
Content Type	Text
Resource Type	Article

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