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Tested Performance of Photovoltaic Array Optimization Technologies

[+] Author Affiliations
Aldrin J. Paynter, Mark Aschheim

Santa Clara University, Santa Clara, CA

Jorge E. Gonzalez

City College of New York, New York, NY

Paper No. ES2012-91349, pp. 947-953; 7 pages
doi:10.1115/ES2012-91349
From:
  • ASME 2012 6th International Conference on Energy Sustainability collocated with the ASME 2012 10th International Conference on Fuel Cell Science, Engineering and Technology
  • ASME 2012 6th International Conference on Energy Sustainability, Parts A and B
  • San Diego, California, USA, July 23–26, 2012
  • Conference Sponsors: Advanced Energy Systems Division, Solar Energy Division
  • ISBN: 978-0-7918-4481-6
  • Copyright © 2012 by ASME

abstract

Growth in the solar industry continues as the cost of photovoltaic power is approaching grid parity. Several technologies have been developed that address reductions in power production associated with partial shading of panels, mismatch at the panel and string levels, and multiple array orientations, conditions that often arise in residential installations. In the absence of existing testing standards, a methodology was developed to evaluate performance of power optimization devices under shading conditions. Technologies investigated include buck-boost, parallel voltage boost, and impedance matching. Performance improvements range from negligible to a 44% increase in energy delivered under partial shading. Comparison data is presented along with guidance for selecting among the different technologies currently available on the market.

Copyright © 2012 by ASME

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