Title:
CONTROL DEVICE AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2016/092910
Kind Code:
A1
Abstract:
In a conventional control device, there has been the problem of low induced voltage estimation accuracy due to a q-axis current flow at low rotational speed in magnet temperature estimation during three-phase short-circuit operation. The purpose of this invention is to more accurately estimate magnet flux or magnet temperature during three-phase short-circuit operation than the case using only d-axis current. A control device (1) is equipped with a phase short-circuit unit (50) for short-circuiting the three-phase terminals (51-1) to (51-3) of a permanent magnet synchronous machine (10) having a permanent magnet, and estimates the magnet state of the permanent magnet on the basis of the d-axis characteristics and q-axis characteristics during three-phase short-circuit operation in which the permanent magnet synchronous machine (10) is operated while the three-phase terminals (51-1 to 51-3) are short-circuited by the phase short-circuit unit (50).
More Like This:
Inventors:
TAKAGI FUMIAKI (JP)
KOBAYASHI TAKAHIKO (JP)
IEZAWA MASAHIRO (JP)
KOBAYASHI TAKAHIKO (JP)
IEZAWA MASAHIRO (JP)
Application Number:
PCT/JP2015/073979
Publication Date:
June 16, 2016
Filing Date:
August 26, 2015
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P21/00; H02P6/16; H02P27/04
Domestic Patent References:
| WO2013108877A1 | 2013-07-25 |
Foreign References:
| JP2006280141A | 2006-10-12 | |||
| JP2010268566A | 2010-11-25 |
Attorney, Agent or Firm:
INABA, Tadahiko et al. (JP)
Tadahiko Inaba (JP)
Tadahiko Inaba (JP)
Download PDF: