Presentation Details
| Impact of errors in temperature coefficients on STC corrected-maximum power offset of photovoltaic modules Xin Huang, Yuehua Yang, Tinglin Guo, He Wang, Hong Yang. Xi’an Jiaotong University, Xi’an, China |
Abstract
STC corrected-maximum power offset is crucial for improving correction accuracy. Temperature coefficients are the indispensable input parameters of correction procedures. In this paper, impact of errors in relative current temperature coefficient on STC corrected-maximum power offset of photovoltaic modules using correction procedure 4 was investigated. It is found that the absolute offset of STC corrected-maximum power voltage is decreased with irradiance or module temperature increasing. The absolute offset of STC corrected-maximum power current is increased with irradiance or module temperature increasing. The absolute offset of STC corrected-maximum power is increased as the errors in relative current temperature coefficient is increased from negative to positive. It is interesting that the variation of absolute offset of STC corrected-maximum power with respect to module temperature under 800 W/m2 is totally different from that under other irradiance conditions. This paper is helpful to provide guides for correctly implementing correction procedures to minimize the power offset effect.
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No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author.
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