Small grid-connected PV-system with lossless passive soft-switching technique

Author

Amorndechaphon, D. ; Premrudeepreechacharn, S. ; Higuchi, K.

Author_Institution

Dept. of Electr. Eng., Naresuan Univ. Phayao Campus, Phayao, Thailand

fYear

2009

fDate

18-21 Aug. 2009

Firstpage

424

Lastpage

429

Abstract

In order to increase the system efficiency of small grid-connected PV-systems without resulting to complex control, a high-efficiency PV power inverter with simple control methodology is required. To satisfy this requirement, an improved single-phase inverter using soft-switching technique is proposed. The power circuit is composed of a lossless passive snubber boost converter and a LLCC resonant inverter. The operating principles of the proposed small grid-connected PV-system will be thoroughly discussed. The effectiveness and result of the proposed grid-connected inverter for small PV system is verified by simulation.

Keywords

phase convertors; photovoltaic power systems; resonant invertors; snubbers; switching convertors; LLCC resonant inverter; lossless passive snubber boost converter; lossless passive soft-switching technique; power circuit; single-phase inverter; small grid-connected PV-system; Circuits; Control systems; Costs; Electromagnetic interference; Fossil fuels; Pulse width modulation inverters; Renewable energy resources; Resonance; Resonant inverters; Snubbers; Grid-connected inverter; LLCC resonant inverter; passive lossless snubber; soft-switching;

fLanguage

English

Publisher

ieee

Conference_Titel

ICCAS-SICE, 2009

Conference_Location

Fukuoka

Print_ISBN

978-4-907764-34-0

Electronic_ISBN

978-4-907764-33-3

Type

conf

Filename

5335097