ABNORMALITY DIAGNOSIS METHOD FOR SEMICONDUCTOR POWER CONVERSION DEVICE, ABNORMALITY DIAGNOSIS DEVICE, ABNORMALITY DIAGNOSIS PROGRAM AND SEMICONDUCTOR POWER CONVERSION DEVICE HAVING ABNORMALITY DIAGNOSIS FUNCTION

摘要

PROBLEM TO BE SOLVED: To enable diagnosis and detection of abnormality/trouble of a semiconductor power conversion device without being dependent on an output to the outside such as a voltage or current of the semiconductor power conversion device.;SOLUTION: A spectrum value for each frequency component is calculated with respect to audio data acquired by picking up sounds generated from a semiconductor power conversion device to be monitored (S1, S2), the spectrum value for each frequency component is used to determine the occurrence or non-occurrence of abnormality/trouble in the semiconductor power conversion device to be monitored (S3), and when occurrence of an abnormality/trouble is determined, an abnormality notification signal is output (S4).;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT