Multi-input DC-AC converter for renewable energy applications

Author

Patil, Dipti ; Agarwal, Vivek

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol.-Bombay, Mumbai, India

fYear

2013

fDate

3-6 June 2013

Firstpage

429

Lastpage

435

Abstract

This paper proposes a high frequency link multi-input DC-AC converter for renewable energy applications. It consists of a boost converter for interfacing uni-directional sources and bi-directional buck-boost converter for interfacing the storage system. An LLC resonant converter is used to further boost the DC voltage and convert DC into high frequency AC. Finally, a cycloconverter is used to convert from high frequency AC to line frequency. The features of the proposed system include reduced number of power conversion stages, low part count, high frequency operation. High frequency switching losses are eliminated using soft switching technique, thereby reducing the magnetics and heat sink requirements. This results in lower cost and higher efficiency. Simulation results are presented to validate the proposed converter configuration and its control performance.

Keywords

DC-AC power convertors; cycloconvertors; renewable energy sources; resonant power convertors; zero current switching; zero voltage switching; DC voltage; LLC resonant converter; bidirectional buck-boost converter; cycloconverter; frequency switching loss elimination; heat sink requirement reduction; high-frequency link multiinput DC-AC converter; line frequency; magnetic requirement reduction; renewable energy application; soft switching technique; storage system; unidirectional sources; IP networks; Magnetic devices; Magnetic resonance; LLC converter; Multi-input; cycloconverter;

fLanguage

English

Publisher

ieee

Conference_Titel

ECCE Asia Downunder (ECCE Asia), 2013 IEEE

Conference_Location

Melbourne, VIC

Print_ISBN

978-1-4799-0483-9

Type

conf

DOI

10.1109/ECCE-Asia.2013.6579132

Filename

6579132