NDLI: Sensorless method for the compensation of cogging torque in PM synchronous machines

Content Provider	IEEE Xplore Digital Library
Author	Forster, N. Leidhold, R.
Copyright Year	2013
Description	Author affiliation: Inst. of Electr. Power Syst., Otto-von-Guericke-Univ., Magdeburg, Germany (Forster, N.; Leidhold, R.)
Abstract	The cogging torque in PM syncrhonous machines can be reduced by taking measures in the design of the machine or by means of the control system of the drive. For compensating the cogging torque through control, it is required to accurately know the position of the rotor. Consequently, the implementation of such a method using a sensorless estimated position is very difficult. In the present paper, an encoderless method is proposed, which determines the compensating torque signal directly without resolving the estimated position. The proposal is developed for machines with concentrated windings and fractional slot pitch, where the cogging torque is of special concern. The compensating signal is synthesized from the inverse inductance matrix, which has components with 2 and 4 times the fundamental electric angular frequency. The proposed method is tested by using a simulation model. The parameters, including the position dependent inductance matrix, where obtained by the finite elements method.
Sponsorship	IEEE Ind. Electron. Soc.
Starting Page	3136
Ending Page	3141
File Size	459904
Page Count	6
File Format	PDF
ISBN	9781479902248
ISSN	1553572X
DOI	10.1109/IECON.2013.6699629
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-11-10
Publisher Place	Austria
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Torque Forging Inductance Pulse width modulation Vectors Time-frequency analysis Current control Torque control Electric machines Permanent magnet machines Motor drives Sensorless control
Content Type	Text
Resource Type	Article

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