MPPT for Photovoltaic Array under Partially Shaded Conditions

Ashton Partridge, Sing Kiong Nguang, Yi Shin Lee

ISBN 10: 3639365461 / ISBN 13: 9783639365467

Published by VDM Verlag, DE, 2011

About this Item

Seller Inventory # LU-9783639365467

Bibliographic Details

• Title: MPPT for Photovoltaic Array under Partially Shaded Conditions
• Publisher: VDM Verlag, DE
• Publication Date: 2011
• Language: English
• ISBN 10: 3639365461
• ISBN 13: 9783639365467
• Binding: Paperback
• Condition: New
• Weight: 191 grams

About this title

Synopsis

Power characteristics of photovoltaic systems can have multiple peaks when under partially shaded conditions. This can cause traditional power tracking methods to operate at the lower power peaks. This research looks at two alternative power tracking method designed for partially shaded conditions. Random Perturbation search method was one of the algorithms investigated. The method is based on perturbations of random but limited magnitude. Even Perturbation search method was the second algorithm investigated. The algorithm scans through the appropriate range of operation with constant size perturbations. Both methods operate on periodic bases for considerations of power loss. Through experiments both search methods have demonstrated good accuracy and consistency with uniform irradiation and for most cases of partial shading. The search methods were combined with the ‘Perturb and Observe' algorithm to improve the response speed to irradiance changes. Both of the improved methods showed significant improvement in response speed and results were consistently accurate. Overall, the developed maximum power tracking methods have met the design goals.

About the Author

Yi Shin Lee received the ME degree from the Department of Electrical and Computer Engineering of the University of Auckland, New Zealand in 2010.