NDLI: A novel soft-switching grid-connected PV inverter and its implementation

Content Provider	IEEE Xplore Digital Library
Author	Minjie Chen Xutao Lee Tsutomu, Y.
Copyright Year	2011
Description	Author affiliation: Graduate School of Information, Production and Systems, Waseda University, 2-7 Hibikino, Wakamutsu-ku, Kitakyushu-shi, Fukuoka 808-0135, Japan (Minjie Chen; Xutao Lee; Tsutomu, Y.)
Abstract	This paper proposes a novel soft-switching PV inverter formed by a ZVT-PWM boost converter, a ZVS-ZCS-PWM buck converter and a low frequency full-bridge inverter. The ZVT-PWM boost converter maintains the dc-bus voltage and provides an auxiliary current source for the soft-switching cell of the buck converter. The buck converter consists of a main switch and an auxiliary switch, with ZVS and ZCS features respectively, which generates a semi-sinusoidal current output. The semi-sinusoidal current is inverted into sinusoidal and fed to the utility grid by the low frequency full-bridge inverter. The overall efficiency is improved and the size is dramatically reduced due to high frequency operation. The operating principles are presented and the circuit is implemented to a 1000W prototype machine. The experimental results with a maximum overall efficiency up to 97% at 100 kHz, about 1.5%'s improvement compared to the hard-switching one, verify the proposal.
Starting Page	373
Ending Page	378
File Size	2648978
Page Count	6
File Format	PDF
ISBN	9781612849997
ISSN	21645264
e-ISBN	9781457700019
e-ISBN	9781457700002
DOI	10.1109/PEDS.2011.6147275
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-12-05
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Switches Zero current switching Zero voltage switching Inverters full-bridge inverter Grid-Connected PV Inverter ZVT-PWM ZVS-ZCS-PWM boost converter buck converter
Content Type	Text
Resource Type	Article

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