New high step-up flyback-based ZVS/ZCS DC-DC converter

Author

Mohammadi, M. ; MohammadianBehbahani, M.R. ; Milimonfared, J. ; Taheri, Meghdad

Author_Institution

Electr. Eng., Amirkabir Univ. of Technol., Tehran, Iran

fYear

2014

fDate

5-6 Feb. 2014

Firstpage

166

Lastpage

171

Abstract

In this paper a new topology of high step-up converters is proposed based on flyback conversion concept, which is applicable in distributed energy resources, such as Photovoltaics. The input stage of the converter includes a bidirectional boost cell which its PWM switching strategy results in a wide load ZVS of switches. Leakage inductance of coupled inductor limits currents of diodes and results in ZCS of diodes. We analyze the converter and present gain calculations. Also Soft switching conditions are discussed and Dynamic relations of converter required for controller design are represented. Finally we simulate the proposed converter for validation of the converter.

Keywords

DC-DC power convertors; PWM power convertors; diodes; energy resources; inductance; inductors; zero current switching; zero voltage switching; PWM switching strategy; bidirectional boost cell; controller design; converters topology; diodes; distributed energy resources; flyback conversion concept; high step-up flyback-based ZVS-ZCS DC-DC converter; leakage inductance; soft switching conditions; Frequency modulation; Load modeling; Photovoltaic systems; Soft switching; Switches; Zero current switching; High step-up converter; Photovoltaic systems; Zero Current Switching; Zero Voltage Switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics, Drive Systems and Technologies Conference (PEDSTC), 2014 5th

Conference_Location

Tehran

Type

conf

DOI

10.1109/PEDSTC.2014.6799364

Filename

6799364