Title:
交流モータ制御装置、および、それを用いた掃除機
Document Type and Number:
Japanese Patent JP7464513
Kind Code:
B2
Abstract:
To provide an AC motor control device capable of suppressing a shock due to switching of a pulse mode so as to stably perform a high-speed drive of an AC motor.SOLUTION: An AC motor control device includes: an AC motor; a power converter for supplying a three-phase AC voltage; a current detector for detecting a current signal of the power converter; and a controller for controlling the power converter so as to obtain a desired rotation speed of the AC motor based on the current signal detected by the current detector. In the AC motor control device, the controller includes: a current processor for generating a reproduction current from the current signal; a PWM signal generator for generating a pulse of a PWM switching signal to switch a switching element; a synchronization PWM controller for switching a pulse mode of the PWM switching signal in response to the rotation speed of the AC motor; and a current detection value corrector for generating a correction current of almost the same amplitude value before/after switching of the pulse mode by calculation of a gain value corresponding to the pulse mode and the reproduction current.SELECTED DRAWING: Figure 10
Inventors:
Hadinata Agnes
Dong Seung Lee
Akio Niwa
Tomoya Yoshino
Dong Seung Lee
Akio Niwa
Tomoya Yoshino
Application Number:
JP2020205851A
Publication Date:
April 09, 2024
Filing Date:
December 11, 2020
Export Citation:
Assignee:
Hitachi Global Life Solutions, Inc.
International Classes:
H02P27/08; H02M7/48
Domestic Patent References:
| JP2016103940A | ||||
| JP2007221999A | ||||
| JP2013223308A | ||||
| JP2020005472A | ||||
| JP2013074674A |
Attorney, Agent or Firm:
Polaire Patent Attorneys Corporation
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