Improved Position-Offset Based Online Parameter Estimation of PMSMs Under Constant and Variable Speed Operations

This paper proposes an improved position-offset based parameter estimation (POPE) method for permanent magnet synchronous machines. In the proposed method, dq -axis inductances and permanent magnet flux linkage can be estimated simultaneously based on three machine states corresponding to injections...

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Bibliographic Details
Published inIEEE transactions on energy conversion Vol. 39; no. 2; pp. 1325 - 1340
Main Authors Wang, Peng, Zhu, Z. Q., Liang, Dawei
Format Journal Article
LanguageEnglish
Published New York IEEE 01.06.2024
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Constant speed
Couplings
Estimation
Inverters
Magnetic flux
Mathematical models
online parameter estimation
Parameter estimation
permanent magnet synchronous machines
Permanent magnets
position-offset injection
Switches
Synchronous machines
variable speed
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Summary:This paper proposes an improved position-offset based parameter estimation (POPE) method for permanent magnet synchronous machines. In the proposed method, dq -axis inductances and permanent magnet flux linkage can be estimated simultaneously based on three machine states corresponding to injections of zero, positive, and negative position offsets. The guideline is also provided for selecting appropriate amplitude of injected position offset. Compared with the conventional POPE methods, the proposed method has two distinguished advantages, i.e., (a) the influence of inverter nonlinearity can be fully eliminated and (b) the proposed method can be applied under both constant and variable speed operations. The effectiveness of the proposed parameter estimation method is verified by simulations and experiments.
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ISSN:0885-8969
1558-0059
DOI:10.1109/TEC.2024.3351055