Title:
電力機器用制御装置
Document Type and Number:
Japanese Patent JP5537565
Kind Code:
B2
Abstract:
The present invention relates to control of synchronous machines. A sensorless control system for an electrical machine is provided comprising a rotor and a stator having one or more phase windings for generating a rotating stator magnetic field. The current in the phase windings is monitored to determine real and imaginary components of the current vector in a rotating reference frame, from which real and imaginary components of the emf vector rotating in the rotating reference frame can also be determined. The ratio of the real and imaginary emf components is calculated, and an angular position of the rotational emf vector is estimated from this ratio. An angular error signal indicative of the deviation of the estimated angular position from a desired position in line with the real axis of the rotating reference frame is determined, and the machine is controlled such that the error signal tends towards zero.
Inventors:
Charles Pollock
Pollock, Helen
Pollock, Helen
Application Number:
JP2011543765A
Publication Date:
July 02, 2014
Filing Date:
November 17, 2009
Export Citation:
Assignee:
Technerec Limited
International Classes:
H02P6/18; H02P8/38; H02P21/00; H02P27/04
Domestic Patent References:
| JP2007282389A | ||||
| JP2007097263A | ||||
| JP2006230200A | ||||
| JP2007037352A |
Foreign References:
| EP1852967A1 |
Attorney, Agent or Firm:
Harakenzo world patent & trademark
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