PV module dynamic impedance and its voltage and frequency dependencies |
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| Authors: | D Chenvidhya K Kirtikara C Jivacate |
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| Affiliation: | Clean Energy Systems Group (CES), King Mongkut's University of Technology Thonburi (KMUTT), Bangkok, Thailand |
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| Abstract: | The paper presents a derivation of the dynamic impedance of a PV module. At each bias voltage, the general form of the impedance describes a semicircular locus in the complex impedance plane. Intercepts of each impedance locus yield series, shunt and dynamic resistance of a module. Determinations of the dynamic impedance of a x-Si PV module in the dark with five reverse bias voltages and over a frequency range of 1 Hz to 60 kHz are made. The experimental results validate the derived general form of dynamic impedance. |
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| Keywords: | PV module Dynamic impedance model Measuring method Frequency response |
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