Title:
SPARK DETECTION DEVICE FOR ELECTRIC MACHINE SLIDE COMPONENT, SPARK DETECTION METHOD FOR ELECTRIC MACHINE SLIDE COMPONENT, SPARK PREVENTION METHOD FOR ELECTRIC MACHINE SLIDE COMPONENT, SLIDE ABNORMALITY DETECTION DEVICE FOR ELECTRIC MACHINE SLIDE COMPONENT, AND SLIDE ABNORMALITY DETECTION METHOD FOR ELECTRIC MACHINE SLIDE COMPONENT
Document Type and Number:
Japanese Patent JP2019054575
Kind Code:
A
Abstract:
To provide a spark detection device for an electric machine slide component which is capable of avoiding non-scheduled stop of an electric machine and can be stably operated, by detecting sparks that are generated in a slide electrification part, on an early stage and accurately in the electric machine comprising a slide electrification mechanism, and a spark detection method.SOLUTION: The present invention relates to a spark detection device for an electric machine slide component. The spark detection device comprises: a stationary body; a sliding body which is electrified in slide contact with the stationary body; a frequency filter which selectively passes a voltage signal in a specific band; a voltmeter which is electrically connected with the stationary body via the frequency filter; and a sliding state detection device which detects the presence/absence of spark generation on a slide interface between the stationary body and the sliding body. In a case where a voltage signal that is detected by the voltmeter exceeds a predetermined threshold, the spark generation is discriminated.SELECTED DRAWING: Figure 1
Inventors:
YANAGIDA NORIFUMI
Application Number:
JP2017175578A
Publication Date:
April 04, 2019
Filing Date:
September 13, 2017
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS
International Classes:
H02K13/00; G01R31/34
Attorney, Agent or Firm:
Polaire Patent Business Corporation