Semiconductor power conversion device having abnormality diagnosis method for semiconductor power conversion device, abnormality diagnosis device, abnormality diagnosis program, and 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