SRM mutual inductance sense for improved sensorless control
Authors:
- 1 August 2017
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 1-6
Abstract
Sensorless and torque control of Switched Reluctance Motors (SRMs) is a well-researched field. Many techniques rely on the measurement of phase inductance and or flux-linkage which can be significantly affected by the mutual phase inductance. By measuring the mutual inductance over an electrical cycle or at particular locations, the accuracy of the sensorless and torque control techniques can be improved. This paper presents two novel techniques which profile the mutual inductance without an off-line calibration technique. Methods are discussed to increase the accuracy of the calculated phase inductance and flux-linkage integral using the mutual inductance information. The techniques are developed for three-phase SRMs. Test results of both techniques are investigated using a 1 kW three-phase SRM.Keywords
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