A new quasi resonant DC link for single phase micro inverter

Author

Grishina, Anna ; Hu, Haibing ; Zhang, Dehua ; Amirahmadi, Ahmadreza ; Shen, John ; Batarseh, Issa

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Univ. of Central Florida, Orlando, FL, USA

fYear

2012

fDate

15-20 Sept. 2012

Firstpage

3221

Lastpage

3225

Abstract

A new quasi resonant DC link that allows for pulse-width-modulation (PWM) is presented in this paper. The proposed quasi resonant DC link provides zero-voltage switching (ZVS) condition for the main devices by resonating the DC-link voltage to zero via three auxiliary switches and LC components. The operating principle and mode analysis are given. The simulation was carried out to verify the proposed soft switching technique. A 150W 120VAC single-phase prototype was built. The experimental results show that the soft switching for four main switches can be realized under different load conditions and the peak efficiency can reach 95.6%.The proposed quasi DC link can be applied to both single-phase and three-phase DC/AC micro inverter.

Keywords

PWM invertors; zero voltage switching; LC components; auxiliary switches; mode analysis; peak efficiency; pulse-width-modulation; quasi resonant DC link; single phase micro inverter; soft switching technique; zero-voltage switching condition; Inductors; Inverters; Pulse width modulation; Switches; Topology; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2012 IEEE

Conference_Location

Raleigh, NC

Print_ISBN

978-1-4673-0802-1

Electronic_ISBN

978-1-4673-0801-4

Type

conf

DOI

10.1109/ECCE.2012.6342345

Filename

6342345