Title:
MOTOR CONTROL DEVICE, SENSORLESS BRUSHLESS MOTOR, AIR BLOWING DEVICE, AND METHOD FOR CONTROLLING MOTOR
Document Type and Number:
WIPO Patent Application WO/2018/142835
Kind Code:
A1
Abstract:
A motor control device, comprising: an energization-pattern-determining unit that determines an energization pattern that specifies a coil to be energized from a multiphase coil; and a current supply unit that supplies current to the coil on the basis of the energization pattern. The energization-pattern-determining unit comprises a first operating mode in which the energization period is determined on the basis of the rotation speed of a rotor, and a second operating mode for which the energization period is longer than that in the first operating mode, where the energization period is the time from when the energization pattern has been determined until the next energization pattern has been determined. When start-up has commenced, the energization-pattern-determining unit transfers to the first operating mode after passing through a plurality of energization periods in the second operating mode.
Inventors:
YAMADA MASAHIRO (JP)
SHIMIZU DAISUKE (JP)
SHIMIZU DAISUKE (JP)
Application Number:
PCT/JP2017/047356
Publication Date:
August 09, 2018
Filing Date:
December 28, 2017
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
H02P6/22; H02P6/18
Foreign References:
| US20110227519A1 | 2011-09-22 | |||
| JP2001352780A | 2001-12-21 | |||
| JP2009100526A | 2009-05-07 | |||
| JP2007166830A | 2007-06-28 |
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