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http://dx.doi.org/10.7471/ikeee.2018.22.4.1031

Torque error compensation of SPMSM drives with a stator flux linkage observer at low speed  

Choi, Sung-min (School of Electrical Engineering, Chonbuk National University)
Park, Chang-Seok (LG Electronics Control Lab.)
Lee, Jae-Suk (Dept. of Electrical Engineering, Chonbuk University)
Publication Information
Journal of IKEEE / v.22, no.4, 2018 , pp. 1031-1035 More about this Journal
Abstract
A compensation algorithm targeting for torque development from a SPMSM including a low speed operation is presented in this paper. As known, PM flux linkage in SPMSM is varied by temperature. Maximum Torque per Ampere (MTPA) uses the calculated PM flux linkage, and torque error occurs due to change of PM flux linkage. In the manuscript, estimated PM flux linkage is obtained using a stator flux observer. The torque error is corrected using the estimated PM flux linkage. The proposed algorithm is implemented and verified in simulation and experiment.
Keywords
Torque error; Gopinath flux observer; SPMSM drives; Kalman filter; Low speed operation;
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