Title:
SYSTEM FOR CONTROLLING PERMANENT MAGNET SYNCHRONOUS MOTOR, AND METHOD FOR CONTROLLING PERMANENT MAGNET SYNCHRONOUS MOTOR
Document Type and Number:
WIPO Patent Application WO/2018/100626
Kind Code:
A1
Abstract:
[Problem] To provide a device for controlling a permanent magnet synchronous motor and a method of control therefor that make it possible to estimate magnetic pole positions of a non-salient-pole permanent magnet synchronous motor even while using a q-axis voltage. [Solution] The present invention is a system for controlling a permanent magnet synchronous motor, in which a variable-voltage/variable-frequency inverter is controlled on the basis of a d-axis voltage and a q-axis voltage. The control system generates a d-axis voltage command and a q-axis voltage command, removes a direct current component from the q-axis voltage command, estimates magnetic pole positions of the permanent magnet synchronous motor on the basis of a signal obtained by removing the direct current component from the q-axis voltage command, and makes use of the estimated magnetic pole positions to control the inverter.
Inventors:
TAKAYAMA NAOKI (JP)
OHNUMA NAOTO (JP)
TERUNUMA TOMOAKI (JP)
MATSUMOTO YOUHEI (JP)
SAITOU HIROYUKI (JP)
INOUE SHINSUKE (JP)
OHNUMA NAOTO (JP)
TERUNUMA TOMOAKI (JP)
MATSUMOTO YOUHEI (JP)
SAITOU HIROYUKI (JP)
INOUE SHINSUKE (JP)
Application Number:
PCT/JP2016/085376
Publication Date:
June 07, 2018
Filing Date:
November 29, 2016
Export Citation:
Assignee:
HITACHI LTD (JP)
HITACHI BUILDING SYST CO LTD (JP)
HITACHI BUILDING SYST CO LTD (JP)
International Classes:
H02P21/18
Foreign References:
| JP2000125589A | 2000-04-28 | |||
| JP2006014496A | 2006-01-12 | |||
| JPH08331883A | 1996-12-13 |
Attorney, Agent or Firm:
SUNNEXT INTERNATIONAL PATENT OFFICE (JP)
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