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An Adaptive Bandpass Full-Order Observer with a Compensated PLL for Sensorless IPMSMs

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Publicat a:Actuators vol. 14, no. 8 (2025), p. 387-405
Autor principal: Wu Qiya
Altres autors: Zhang, Jia, Meng Dongyi, Liu, Ye, Diao Lijun
Publicat:
MDPI AG
Matèries:
Design
Accuracy
Torque
Bandpass
Control theory
Systems stability
Phase locked loops
Tracking errors
Bandwidths
Permanent magnets
Kalman filters
Position errors
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Resum:Model-based sensorless control of interior permanent-magnet synchronous motors (IPMSMs) typically employs an estimation observer with embedded position information, followed by a position extraction process. Although a type-2 phase-locked loop (PLL) is widely adopted for position and speed extraction, it suffers from steady-state tracking errors under variable-speed operation, leading to torque bias in IPMSM torque control. To mitigate this issue, this paper first proposes an adaptive bandpass full-order observer in the stationary reference frame. Subsequently, a Kalman filter (KF)-based compensation strategy is introduced for the PLL to eliminate tracking errors while maintaining system stability. Experimental validation on a 300 kW platform confirms the effectiveness of the proposed sensorless torque control algorithm, demonstrating significant reductions in position error and torque fluctuations during acceleration and deceleration.
ISSN:2076-0825
DOI:10.3390/act14080387
Font:Advanced Technologies & Aerospace Database