Title:
SHORT CIRCUIT DETECTION DEVICE AND SHORT CIRCUIT DETECTION METHOD FOR ROTATING ELECTRIC MACHINE
Document Type and Number:
WIPO Patent Application WO/2024/089788
Kind Code:
A1
Abstract:
This short circuit detection device (100) for a rotating electric machine (10) comprises a signal acquisition unit (61), a signal decomposition unit (62), and a short circuit detection unit (63), and detects a short circuit of a stator core (21). The signal decomposition unit (62) decomposes a voltage signal from the signal acquisition unit (61) into a plurality of frequency components different from one another in order. The short circuit detection unit (63) makes a comparison between an amplitude change in an odd low harmonic component and an amplitude change in a first-order frequency component from an output result of the signal decomposition unit (62) based on two units of the voltage signals acquired at different time points to determine a short circuit of the stator core (21).
Inventors:
TAKIZAWA YUJI (JP)
Application Number:
PCT/JP2022/039884
Publication Date:
May 02, 2024
Filing Date:
October 26, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02K11/225; H02K15/02
Domestic Patent References:
| WO2020208812A1 | 2020-10-15 |
Foreign References:
| JP2011078167A | 2011-04-14 | |||
| JP2022018754A | 2022-01-27 | |||
| JPH05304745A | 1993-11-16 |
Attorney, Agent or Firm:
PALMO PATENT FIRM, P.C. (JP)
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