Next Article in Journal
Game Optimization Theory and Application in Distribution System Expansion Planning, Including Distributed Generation
Previous Article in Journal
Exergy and Exergoeconomic Model of a Ground-Based CAES Plant for Peak-Load Energy Production
Article Menu

Export Article

Open AccessArticle
Energies 2013, 6(2), 1068-1100; doi:10.3390/en6021068

A Photovoltaic Power System Using a High Step-up Converter for DC Load Applications

Department of Electrical Engineering, Chang-Gung University Kwei-Shan Tao-Yuan, Taiwan
*
Author to whom correspondence should be addressed.
Received: 26 December 2012 / Revised: 7 February 2013 / Accepted: 8 February 2013 / Published: 21 February 2013

Abstract

This paper presents a power system using a high step-up converter for dc load applications. The high step-up converter adopts a boost converter with interleaved mode and a coupled inductor to raise its powering ability and increase its step-up voltage ratio, respectively. In order to increase conversion efficiency, an active clamp circuit is introduced into the proposed one to provide soft-switching features to reduce switching losses. Moreover, switches in the converter and active clamp circuit are integrated with a synchronous switching technique to reduce circuit complexity and component counts, resulting in a lower cost and smaller volume. A perturb and observe method is adopted to extract the maximum power from photovoltaic (PV) arrays. Furthermore, a microchip associated with PWM IC is used to implement maximum power point tracking operation, voltage regulation and power management. Finally, a prototype PV power system with 400 V/6 A has been implemented for verifying the feasibility of the proposed PV power system. It is shown to be suitable for PV energy conversion applications when the duty ratios of switches in the dc/dc converter are less than 0.5.
Keywords: photovoltaic power system; high step-up converter; boost converter; perturb and observe method photovoltaic power system; high step-up converter; boost converter; perturb and observe method
Figures

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Tseng, S.-Y.; Wang, H.-Y. A Photovoltaic Power System Using a High Step-up Converter for DC Load Applications. Energies 2013, 6, 1068-1100.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top