Journal
ENERGIES
Volume 16, Issue 20, Pages -Publisher
MDPI
DOI: 10.3390/en16207096
Keywords
permanent magnet synchronous motor; current control; state observer; disturbance observer; Kalman filter
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The article presents an improved dual second-order observer for decoupled control and accurate estimation of the d-axis current, q-axis current, and rotor speed of the PMSM. The effectiveness and practicality of the proposed method are demonstrated through simulation and experimental results.
The third-order state observer implements the decoupled control and the accurate estimation of the d-axis current, q-axis current, and rotor speed of the permanent magnet synchronous motor (PMSM). Its complex calculation, however, is a challenge for most digital controllers in practical applications. The authors proposed an improved dual second-order observer based on the Kalman filter. A 0.88 Nm, 1500 rpm prototype was built. The simulation and experimental results prove the effectiveness and practicability of the proposed method.
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