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Patent Searching and Data


Title:
MOTOR CONTROL DEVICE AND MOTOR SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/014948
Kind Code:
A1
Abstract:
A motor control device capable of reducing noise is provided. A motor control device (100) is characterized by comprising: a control unit (20) that generates a respective PWM signal (U, V, W) for each phase (U, V, W) of a motor (4) having coils (Lu, Lv, Lw) in a plurality of phases; and an inverter circuit (23) that drives the coils in the phases on the basis of the PWM signals. The motor control device is also characterized in that, if there arises a zero-vector interval (Tz) in which the PWM signals of the phases are at the same signal level, the control unit produces within the zero-vector interval an energizing interval (Te) in which the coils in the phases are energized.

Inventors:
OBA TAKASHI (JP)
Application Number:
PCT/JP2020/026342
Publication Date:
January 28, 2021
Filing Date:
July 06, 2020
Export Citation:
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Assignee:
MINEBEA MITSUMI INC (JP)
International Classes:
H02P27/08; H02M7/48; H02P23/04
Domestic Patent References:
WO2011064970A12011-06-03
WO2017154239A12017-09-14
Foreign References:
JP2013162536A2013-08-19
JP2010279141A2010-12-09
JP4671000B12011-04-13
Attorney, Agent or Firm:
EINSEL Felix-Reinhard et al. (JP)
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