A module-integrated isolated solar micro-inverter without electrolytic capacitors

Author

Li, Chia-Hsing ; Yang, Chun-Yu ; Chang, Yu-Chen ; Chiu, Huang-Jen ; Lo, Yu-Kang ; Chuang, Ching-Chun ; Cheng, Shih-Jen ; Kuo, Min-Chien ; Huang, Yi-Ming ; Jean, Yuan-Bor ; Huang, Yung-Cheng

Author_Institution

Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan

fYear

2012

fDate

16-18 July 2012

Firstpage

247

Lastpage

253

Abstract

This paper presents a module-integrated isolated solar micro-inverter. The studied grid-tied micro-inverters can individually extract the maximum solar power from each photovoltaic (PV) panel and transfer to the AC utility system. A harmonic suppression technique is used to reduce the DC-bus capacitance. Electrolytic capacitors are not needed in the studied solar micro-inverter. High conversion efficiency, high MPPT accuracy and long lifespan can be achieved. The operation principles and design considerations of the studied PV inverter are analyzed and discussed. A laboratory prototype is implemented and tested to verify its feasibility.

Keywords

capacitance; electrolytic capacitors; harmonics suppression; invertors; maximum power point trackers; solar cells; AC utility system; DC-bus capacitance reduction; PV inverter; PV panel; electrolytic capacitors; grid-tied microinverters; harmonic suppression technique; high MPPT accuracy; high conversion efficiency; laboratory prototype; maximum solar power; module-integrated isolated solar microinverter; operation principles; photovoltaic panel; solar microinverter; Accuracy; Capacitors; Harmonic analysis; Harmonics suppression; Inductors; Inverters; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Audio, Language and Image Processing (ICALIP), 2012 International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4673-0173-2

Type

conf

DOI

10.1109/ICALIP.2012.6376620

Filename

6376620