The Temperature Dependant Efficiency of Photovoltaic Modules - a long term evaluation of experimental measurements

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The Temperature Dependant Efficiency of Photovoltaic Modules - a long term evaluation of experimental measurements

Popis výsledku v původním jazyce

The problematic can be put in short as follows. The photovoltaic cell is in essence a large-surface semiconductor diode working in the generator mode. Its volt-ampere characteristic has limit quantities, which give the magnitude of open-circuit voltage and the value of short-circuit current. These quantities vary in dependence on the change in solar intensity and in cell temperature. Multiplying the instantaneous values of voltage by the instantaneous values of current we obtain the power characteristic. The highest point of this characteristic represents the maximum value of potential power that the photovoltaic cell can supply to the load under given operating conditions. If we want to obtain this maximum power, the voltage across the electrical appliance must equal exactly the optimum voltage. With prolonged solar intensity or impaired cell-cooling conditions the cell surface temperature increases to as much as 60 C. With such elevated temperatures there is a change in the electrica

Název v anglickém jazyce

The Temperature Dependant Efficiency of Photovoltaic Modules - a long term evaluation of experimental measurements

Popis výsledku anglicky

The problematic can be put in short as follows. The photovoltaic cell is in essence a large-surface semiconductor diode working in the generator mode. Its volt-ampere characteristic has limit quantities, which give the magnitude of open-circuit voltage and the value of short-circuit current. These quantities vary in dependence on the change in solar intensity and in cell temperature. Multiplying the instantaneous values of voltage by the instantaneous values of current we obtain the power characteristic. The highest point of this characteristic represents the maximum value of potential power that the photovoltaic cell can supply to the load under given operating conditions. If we want to obtain this maximum power, the voltage across the electrical appliance must equal exactly the optimum voltage. With prolonged solar intensity or impaired cell-cooling conditions the cell surface temperature increases to as much as 60 C. With such elevated temperatures there is a change in the electrica

Druh

C - Kapitola v odborné knize

CEP obor

JE - Nejaderná energetika, spotřeba a užití energie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název knihy nebo sborníku

Renewable Energy

ISBN

978-953-7619-52-7

Počet stran výsledku

32

Strana od-do

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Počet stran knihy

580

Název nakladatele

In-Tech, Olajnica 19/3, 32000 Vukovar, Croatia

Místo vydání

Printed in India

Kód UT WoS kapitoly

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