| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To detect the position of failure and the kind of failure on the inside and the outside of a solar cell module. <P>SOLUTION: A solar cell array failure diagnosis method comprises a first connection configuration in which each electrode of a plurality of solar cell modules 4 is connected in series to one output end of a signal generator 9 and one input end of a wave observation apparatus 12, and another output end of the signal generator and another input end of the wave observation apparatus are connected to a metal-made frame 5 of the solar cell module, and a second connection configuration which is in a failure/degradation state at anywhere from the signal generator through an open end in the first connection state, and assuming that the time periods that the rise and the fall of a difference signal wave shape for an observation signal by the wave observation apparatus in the first connection configuration and an observation signal by the wave observation apparatus in the second connection configuration exceed threshold values are Tx and T1, respectively, a distance from the signal generator to the open end corresponding to T1 is L1, and a distance from the signal generator to the failure/degradation place corresponding to Tx is Lx, Lx is determined by Lx=(Tx/T1)×L1. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
