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Title:
MOTOR CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/016070
Kind Code:
A1
Abstract:
An inverter (40) converts a DC voltage from a DC power supply (12) to an AC voltage applied to a motor (15) in which no positional sensor is disposed. A current detection unit (50) detects motor currents (Iu, Iv, Iw) flowing through the motor (15). A control unit (100) generates control signals (S1-S6) for controlling, on the basis of a DC voltage (Vdc) input to the inverter (40) and the detected values of the motor currents (Iu, Iv, Iw), the turning-on/off of a plurality of semiconductor switching elements (Q1-Q6) constituting the inverter (40). The control unit (100) controls the inverter (40) during the feedback-control of the motor currents so that there is a timing at which the motor currents decrease during an operation for raising the rotational speed of the motor (15).

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Inventors:
UEMURA KEISUKE (JP)
SAKAI AKIRA (JP)
KUSUBE SHINSAKU (JP)
MASUMURA TSUKASA (JP)
Application Number:
PCT/JP2016/071529
Publication Date:
January 25, 2018
Filing Date:
July 22, 2016
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P21/24; H02P27/08
Foreign References:
JP2005110470A2005-04-21
JP2015228793A2015-12-17
JP2008187895A2008-08-14
JP2012050285A2012-03-08
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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