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Patent Searching and Data


Title:
DEVICE FOR CONTROLLING ROTATING MACHINE, AND ELECTRIC POWER STEERING DEVICE PROVIDED WITH SAID DEVICE FOR CONTROLLING ROTATING MACHINE
Document Type and Number:
WIPO Patent Application WO/2018/087916
Kind Code:
A1
Abstract:
The present invention provides: a device for controlling a rotating machine in which a configuration necessary to check the function of cutting off a switching element is simplified; and an electric power steering device. A device (1) for controlling a rotating machine (3), said device (1) performing a high-potential-side forced cutoff or a low-potential-side forced cutoff, and assessing a fault in an element cutoff unit on the basis of the detected current or voltage value when the high-potential-side forced cutoff or low-potential-side forced cutoff is performed. The high-potential-side forced cutoff involves forcibly cutting off a high-potential-side switching element of a phase to be diagnosed, in a drive state in which the winding current in the phase to be diagnosed is positive. The low-potential-side forced cutoff involves forcibly cutting off a low-potential-side switching element of the phase to be diagnosed, in a drive state in which the winding current in the phase to be diagnosed is negative.

Inventors:
FURUKAWA AKIRA (JP)
MORI TATSUYA (JP)
YAMAMOTO MUNENORI (JP)
Application Number:
JP2016/083682
Publication Date:
May 17, 2018
Filing Date:
November 14, 2016
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P27/06
Domestic Patent References:
WO2013105225A12013-07-18
WO2007138676A12007-12-06
Foreign References:
Other References:
See also references of EP 3540935A4
Attorney, Agent or Firm:
OIWA Masuo et al. (JP)
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