期刊
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
卷 48, 期 6, 页码 1959-1967出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIA.2012.2226200
关键词
Observer; parameter uncertainties; permanent-magnet (PM) synchronous motor (PMSM); sensorless; stability conditions; synchronous reluctance motor (SyRM)
资金
- ABB Oy
Two back-electromotive-force-based position observers are compared for motion-sensorless synchronous motor drives: the reduced-order observer and the adaptive full-order observer. A stabilizing gain is proposed for the adaptive full-order observer, which guarantees the local stability of the closed-loop system, if the motor parameters are known. Equations for the steady-state position error and for the linearized estimation-error dynamics under erroneous parameters are derived, and the robustness of the two observers against parameter errors is analyzed and compared. The observers are experimentally evaluated using a 6.7-kW synchronous reluctance motor drive in low-speed operation and under parameter errors. The gain selection of the reduced-order observer is easier, but the adaptive full-order observer can be made more robust against parameter variations and noise.
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