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An innovative method for determining the junction temperature of a photovoltaic cell
Munusamy Kumaravel, , V. Jagadeesh Kumar
Published in
2012
Pages: 1847 - 1850
Abstract
An innovative method for determining the junction temperature T J as a function of the cell voltage V of a photovoltaic (PV) cell for varying operating power levels at pre-determined values of irradiation levels is presented. Since the junction of a PV cell that is in operation is inaccessible for obtaining a measure of T J, a novel indirect temperature measurement method suitable for determining the T J is proposed in this paper. The electronically controllable load required to establish different operating power levels for obtaining the T J - V characteristic of a photovoltaic (PV) cell is implemented with a MOSFET, suitably controlled to act as a variable load resistor. Microcontroller based hardware with associated software were developed to automate the entire measurement process. Results obtained from a prototype T J - V measurement unit built and tested establish the efficacy of the proposed method. © 2012 IEEE.
About the journal
Journal2012 IEEE I2MTC - International Instrumentation and Measurement Technology Conference, Proceedings
Open AccessNo
Concepts (22)
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    ASSOCIATED SOFTWARES
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    CELL VOLTAGES
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    Controllable loads
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    ELECTRONIC LOAD
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    INNOVATIVE METHOD
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    IRRADIATION LEVELS
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    Junction temperatures
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    MEASUREMENT PROCESS
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    MOS-FET
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    OPERATING POWER
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    Photovoltaic
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    Solar photovoltaics
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    TEMPERATURE MEASUREMENT METHODS
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    VARIABLE LOADS
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    Cytology
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    Mosfet devices
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    Open circuit voltage
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    Photoelectrochemical cells
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    Photovoltaic cells
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    Temperature measurement
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    Units of measurement
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    Cells