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Title: Effect of operating-point-control strategy on the annual energy production of degraded photovoltaic arrays

Abstract

A new computer simulation of the annual operation of degraded flat-plate photovoltaic (PV) arrays is used to evaluate the need for maximum-power-point tracking in real PV systems. The simulations are based on single-glitch I-V curve shapes rather than particular array degradations, making the data reported applicable to any system whose likely failure modes are predictable and result in single-glitch I-V curves. The simulations show that with a reasonable array wiring strategy, effective maintenance, periodic I-V curve tracing, and avoidance of frequent and serious array shadowing, there is no reason that considerations of degradation should force the adoption of maximum-power-point-tracking power conditioning on a PV system that would otherwise operate economically at fixed voltage.

Authors:
Publication Date:
Research Org.:
Massachusetts Inst. of Tech., Lexington (USA). Lincoln Lab.
OSTI Identifier:
6719543
Report Number(s):
DOE/ET/20279-226; CONF-820906-11
ON: DE83001135
DOE Contract Number:  
AC02-76ET20279
Resource Type:
Conference
Resource Relation:
Conference: 16. IEEE photovoltaics specialists conference, San Diego, CA, USA, 28 Sep 1982
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; SOLAR CELL ARRAYS; COMPUTERIZED SIMULATION; FAILURES; VOLTAGE REGULATORS; DESIGN; ELECTRIC CURRENTS; ELECTRIC POTENTIAL; SEMICONDUCTOR DIODES; CURRENTS; EQUIPMENT; SEMICONDUCTOR DEVICES; SIMULATION; SOLAR EQUIPMENT; 140600* - Solar Energy- Photovoltaic Power Systems

Citation Formats

Branz, H M. Effect of operating-point-control strategy on the annual energy production of degraded photovoltaic arrays. United States: N. p., 1982. Web.
Branz, H M. Effect of operating-point-control strategy on the annual energy production of degraded photovoltaic arrays. United States.
Branz, H M. Fri . "Effect of operating-point-control strategy on the annual energy production of degraded photovoltaic arrays". United States. https://www.osti.gov/servlets/purl/6719543.
@article{osti_6719543,
title = {Effect of operating-point-control strategy on the annual energy production of degraded photovoltaic arrays},
author = {Branz, H M},
abstractNote = {A new computer simulation of the annual operation of degraded flat-plate photovoltaic (PV) arrays is used to evaluate the need for maximum-power-point tracking in real PV systems. The simulations are based on single-glitch I-V curve shapes rather than particular array degradations, making the data reported applicable to any system whose likely failure modes are predictable and result in single-glitch I-V curves. The simulations show that with a reasonable array wiring strategy, effective maintenance, periodic I-V curve tracing, and avoidance of frequent and serious array shadowing, there is no reason that considerations of degradation should force the adoption of maximum-power-point-tracking power conditioning on a PV system that would otherwise operate economically at fixed voltage.},
doi = {},
url = {https://www.osti.gov/biblio/6719543}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {1}
}

Conference:
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