Title:
ELECTRIC MOTOR CONTROL DEVICE FOR ELECTRIC HOME APPLIANCES
Document Type and Number:
WIPO Patent Application WO/2021/192361
Kind Code:
A1
Abstract:
Disclosed is a low-noise electric motor control device for electric home appliances. The electric motor control device can suppress memory expansion and can suppress performance degradation regardless of load state but also enables drive at any rotational speed range. The electric motor control device performs synchronous PWM control and has a carrier wave generation unit that generates a carrier wave, a PWM control command generation unit that, on the basis of a voltage command and the carrier wave as inputted thereto, generates a PWM control command for controlling an electric motor, and a deviation detection unit that detects the deviation between the voltage command and a predetermined reference voltage command. The carrier wave generation unit generates the carrier wave on the basis of the voltage phase deviation and a frequency command and can set the number of pulses of the carrier wave to 1.
Inventors:
NAGAISHI TOMOYA (JP)
NIWA AKIO (JP)
KATO KOKI (JP)
NIWA AKIO (JP)
KATO KOKI (JP)
Application Number:
PCT/JP2020/035437
Publication Date:
September 30, 2021
Filing Date:
September 18, 2020
Export Citation:
Assignee:
HITACHI GLOBAL LIFE SOLUTIONS INC (JP)
International Classes:
H02P27/08; A47L9/28
Domestic Patent References:
| WO2016152203A1 | 2016-09-29 |
Foreign References:
| JP2020010481A | 2020-01-16 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
Download PDF: