High-Efficiency DC–DC Converter With Fast Dynamic Response for Low-Voltage Photovoltaic Sources

Author

Choi, Woo-Young

Author_Institution

Div. of Electron. Eng., Chonbuk Nat. Univ., Jeonju, South Korea

Volume

28

Issue

2

fYear

2013

fDate

Feb. 2013

Firstpage

706

Lastpage

716

Abstract

This paper proposes a high-efficiency dc-dc converter with fast dynamic response for low-voltage photovoltaic (PV) sources. The voltage stress of power switches is reduced at low-voltage side. Zero-current turn-off of output diodes is achieved at high-voltage side. Power efficiency is improved by reducing switching power losses. A modified proportional and integral controller is also suggested to achieve fast output voltage control. The dynamic response of the proposed converter is improved. The performance of the proposed converter is verified based on an experimental prototype for a 200-W PV module.

Keywords

DC-DC power convertors; PI control; photovoltaic power systems; voltage control; high efficiency DC-DC converter; low voltage photovoltaic sources; photovoltaic module; power 200 W; power switch; proportional and integral controller; switching power loss; voltage control; voltage stress; Capacitors; Clamps; Inductors; Magnetic resonance; Stress; Switches; DC–DC converter; dynamic response; photovoltaic (PV); power efficiency;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2012.2201504

Filename

6209434