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Title: Improved high-frequency carrier voltage measurement for position estimation of switched-flux permanent magnet machines
Authors: Lin, Tzu-Chi
Zhu, Zi-Qiang
Liu, Kan
Keywords: High-frequency injection
Machine saliency
Machine winding configuration
Permanent magnet synchronous machine (PMSM)
Switched-flux machine
Issue Date: 2015
Publisher: © IEEE
Citation: LIN, T.-C., ZHU, Z.Q. and LIU, K., 2015. Improved high-frequency carrier voltage measurement for position estimation of switched-flux permanent magnet machines. 2015 IEEE Symposium on Sensorless Control for Electrical Drives (SLED), Sydney, Australia, 7th-8th June 2015.
Abstract: The conventional 12/10 stator/rotor poles switched-flux permanent magnet (SFPM) machine is usually based on all poles wound topology, each phase comprising four winding coils in series connection. However, alternate coils of the same phase have different machine saliency characteristics. Moreover, in order to measure the high-frequency (HF) carrier voltage, the mid-tapered winding wires can be utilized. Consequently, the machine saliencies can be measured separately from two parts of winding coil connections. This paper investigates the influences of machine saliencies on the sensorless rotor position estimations based on different sequence of winding coil connections, in which the primary saliency may contain some additional harmonics referring to the secondary saliency that will degrade the overall sensorless control operations. Furthermore, a simple compensation method is proposed to reduce the influence of multiple saliencies to achieve more accurate sensorless rotor position estimation. By comparing with rotor positon estimations without the proposed compensation and HF carrier current based method, the effectiveness of improved sensorless rotor position estimation has been demonstrated experimentally, as well as the application to dual 3-phase SFPM machines.
Description: © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works
Version: Accepted for publication
DOI: 10.1109/SLED.2015.7339268
URI: https://dspace.lboro.ac.uk/2134/24444
Publisher Link: http://dx.doi.org/10.1109/SLED.2015.7339268
ISBN: 9781467382823
Appears in Collections:Conference Papers and Presentations (Mechanical, Electrical and Manufacturing Engineering)

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