Efficiency of maximum power point tracking in photovoltaic system under variable solar irradiance

dc.contributor.authorMarańda, Witold
dc.contributor.authorPiotrowicz, Maciej
dc.date.accessioned2016-02-03T08:25:41Z
dc.date.available2016-02-03T08:25:41Z
dc.date.issued2014
dc.description.abstractField conditions decrease the energy output of photovoltaic (PV) systems, mainly due to excessive temperatures. However, in regions with moderate ambient temperatures, as in Poland, solar energy is commonly delivered with highly fluctuating irradiance. This introduces yet another source of energy losses due to the non-ideal tracking of actual position of Maximum Power Point (MPP). Majority of PV-systems are equipped with DC/AC and grid-connected inverter. Since the solar energy flux is variable, an adequate MPP-tracking algorithm is required to handle a wide range of load levels and face rapid changes of input power. Along with the essential DC/AC conversion, the quality of MPP-tracking must also be taken into account in evaluation of inverter efficiency. The tracking in dynamic conditions has been addressed only recently. Several algorithms has been studied theoretically, experimentally or in laboratory conditions by applying artificial input test-patterns. This work takes the opposite approach by applying the recorded real-life solar irradiance and simulating the tracking behavior to study the problem for true field conditions in Poland. The simulation uses the unique high-quality irradiance data collected with 200 ms time resolution. The calculation of both static and dynamic MPP-tracking efficiency has been performed for representative variable-cloudy day, applying commonly used Perturb&Observe tracking algorithm.en_EN
dc.identifier.citationBulletin of the Polish Academy of Sciences Technical Sciences, Vol. 62, Issue 4, 2014, Pages 713–721
dc.identifier.urihttp://hdl.handle.net/11652/1061
dc.identifier.urihttp://www.degruyter.com/view/j/bpasts.2014.62.issue-4/bpasts-2014-0077/bpasts-2014-0077.xml?format=INT
dc.language.isoenen_EN
dc.publisherDivision IV: Engineering Sciences of the Polish Academy of Sciencesen_EN
dc.publisherPolska Akademia Nauk, Wydział IV Nauk Technicznychpl_PL
dc.relation.ispartofseriesBulletin of the Polish Academy of Sciences Technical Sciences, Vol. 62, Issue 4, 2014en_EN
dc.subjectphotovoltaicsen_EN
dc.subjectMPP-trackingen_EN
dc.subjectinverter efficiencyen_EN
dc.titleEfficiency of maximum power point tracking in photovoltaic system under variable solar irradianceen_EN
dc.typeArtykułpl_PL
dc.typeArticleen_EN

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