An improved single-phase inverter for small PV-system using soft-switching technique

Author

Amorndechaphon, D. ; Premrudeepreechacharn, S.

Author_Institution

Dept. of Electr. Eng., Chiangmai Univ., Chiang Mai

Volume

2

fYear

2008

fDate

14-17 May 2008

Firstpage

997

Lastpage

1000

Abstract

In order to increase the conversion efficiency of a PV system, 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 proposed power inverter circuit is composed of a ZVT-PWM boost dc-dc converter and a LLCC resonant inverter. The dc-link voltage amplitude is controlled by ZVT-PWM boost dc-dc converter with soft-switching transition. The stable sinusoid ac output voltage is inverted from dc-link voltage via a LLCC resonant inverter. The effectiveness of the proposed inverter for small PV system is verified by simulation results.

Keywords

DC-DC power convertors; PWM invertors; resonant invertors; conversion efficiency; dc-dc converter; dc-link voltage amplitude; high-efficiency power inverter; resonant inverter; single-phase inverter; soft-switching technique; DC-DC power converters; Electromagnetic interference; Power semiconductor switches; Pulse width modulation inverters; Resonant inverters; Stress; Switching converters; Switching loss; Zero current switching; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, 2008. ECTI-CON 2008. 5th International Conference on

Conference_Location

Krabi

Print_ISBN

978-1-4244-2101-5

Electronic_ISBN

978-1-4244-2102-2

Type

conf

DOI

10.1109/ECTICON.2008.4600600

Filename

4600600