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JEET, Vol. 13, No. 6, November 2018
A Coupled Recursive Total Least Squares-Based Online Parameter Estimation for PMSM
Shen Xu
Area B - Electric Machinery and Power Electronics
Abstract A coupled recursive total least squares (CRTLS) algorithm is proposed for parameter estimation of permanent magnet synchronous machines (PMSMs). TLS considers the errors of both input variables and output ones, and thus achieves more accurate estimates than standard least squares method does. The proposed algorithm consists of two recursive total least squares (RTLS) algorithms for the d-axis subsystem and q-axis subsystem respectively. The incremental singular value decomposition (SVD) for the RTLS obtained by an approximate calculation with less computation. The performance of the CRTLS is demonstrated by simulation and experimental results.
Keyword Online parameter estimation,Permanent magnet synchronous machine (PMSM),Total least squares (TLS),Singular value decomposition (SVD).
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