Title:
MOTOR DRIVE CONTROL DEVICE, MOTOR, AND BLOWER
Document Type and Number:
Japanese Patent JP2020014364
Kind Code:
A
Abstract:
To provide a motor with a high startup success rate.SOLUTION: A motor drive control device that controls the drive of a motor unit to which a three-phase AC voltage is input switches a conduction pattern to a phase winding of the motor unit in a predetermined order, and detects and stores a current value flowing to the motor unit for each conduction pattern. The motor drive control device starts synchronous operation, when a second current value I2 detected at the time of energization in a second or later energization pattern is continuously smaller than a first current value I1 detected at the time of energization in a first energization pattern m times (m is a positive integer of 2 or more). In the synchronous operation, the energization pattern is switched according to rotation direction position information of a rotor generated on the basis of the detection result of the voltage of the phase winding.SELECTED DRAWING: Figure 4
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Inventors:
MORIOKA KOKICHI
HARA YASOHACHI
HARA YASOHACHI
Application Number:
JP2018136999A
Publication Date:
January 23, 2020
Filing Date:
July 20, 2018
Export Citation:
Assignee:
NIHON DENSAN KK
International Classes:
H02P6/20; H02M7/48
Attorney, Agent or Firm:
Sano patent office