METHOD FOR DIAGNOSIS OF CONTACTS OF A PHOTOVOLTAIC SYSTEM AND APPARATUS
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United States of America Patent
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app pub date -
Nov 15, 2012
filing date -
May 18, 2010
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Abstract
A method for monitoring of contacts of a photovoltaic system includes injection of a test signal having a plurality of frequencies, into the photovoltaic system, and determining a generator impedance of the photovoltaic system by evaluating a response signal associated with the test signal. The method further includes monitoring of contacts of the photovoltaic system independently of operating states of the photovoltaic system by modelling of an alternating-current response of the photovoltaic system based on the determined generator impedance, wherein the modelling is specific to at least two different operating states of the photovoltaic system.
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