Characteristics and Embodiment of the Practical Use Method of “Monthly Temperature Coefficient” of the Photovoltaic Generation System

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  • 太陽光発電システムの「月別温度係数」の特徴とその活用の具体化
  • タイヨウコウ ハツデン システム ノ ツキベツ オンド ケイスウ ノ トクチョウ ト ソノ カツヨウ ノ グタイカ
  • Characteristics and Embodiment of the Practical Use Method of “Monthly Temperature Coefficient” of the Photovoltaic Generation System

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Abstract

We already proposed “monthly temperature coefficient”(1)(2) as the coefficient that indicates the losses caused by the temperature rise, etc., of the photovoltaic generation system (PV system). This coefficient contains non-linear based losses under the low irradiance of the PV system adding to the loss due to the temperature rise of the photovoltaic module. In this paper, we compare “monthly temperature coefficient” and “cell temperature factor”, and discuss the followings:<br>·The difference in the fundamental view of two coefficients, and two coefficients of the installed 40kW class photovoltaic generation system<br>·Calculation results and analysis of the photovoltaic module output and temperature coefficient under the typical irradiance and cell temperature of the photovoltaic module<br>·Simulation calculation results and analysis of two coefficients in the case that the characteristics of the photovoltaic module, location, and support structure of the photovoltaic module are different<br>Next, the embodiment of practical use method of “monthly temperature coefficient” is described as follows:<br>(1) The calculation method of annual power generation using the table of “monthly temperature coefficient”<br>(2)The separation method of losses of the installed photovoltaic generation system using “monthly temperature coefficient”

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