Xiao, S. and Griffo, A. orcid.org/0000-0001-5642-2921 (2019) PWM-based Flux linkage estimation for permanent magnet synchronous machines. In: The Journal of Engineering. 9th International Conference on Power Electronics, Machines and Drives (PEMD 2018), 17-19 Apr 2018, Liverpool, UK. IET
Abstract
Monitoring of rotor temperature in permanent magnet synchronous machines (PMSM) is of great importance as high temperature could cause partial or even irreversible demagnetization of the permanent magnets. Rotor temperature measurement unfortunately is particularly difficult in practice, since it is difficult to access temperature sensors on a rotating shaft. Nevertheless, rotor temperature can be obtained indirectly with the information of rotor magnet flux linkage, as permanent magnet (PM) remanence decreases with rotor temperature. In this paper, a simple and relatively accurate method for online estimation of PM flux linkage is presented, based on the measurement of current response to the standard space-vector pulse width modulation (SV-PWM). This method uses the already-existing PWM voltage as the excitation signal in order to avoid any form of signal injection which produces undesirable disturbance to the system. Knowledge of machine parameters, such as inductances which may vary due to saturation, is not required. The proposed methodology has been verified in real-time simulation.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 The Authors. This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
Keywords: | electric current measurement; magnetic flux; rotors; synchronous machines; permanent magnet machines; pulse width modulation |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL (EPSRC) EP/P010350/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 23 May 2018 10:42 |
Last Modified: | 11 Jun 2019 12:09 |
Status: | Published online |
Publisher: | IET |
Refereed: | Yes |
Identification Number: | 10.1049/joe.2018.8105 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:131204 |