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Adaptive QSMO-Based Sensorless Drive for IPM Motor with NN-Based Transient Position Error Compensation

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Published in:Electronics vol. 13, no. 15 (2024), p. 3085
Main Author: Sun, Linfeng
Other Authors: Guo, Jiawei, Jiang, Xiongwen, Kawaguchi, Takahiro, Hashimoto, Seiji, Jiang, Wei
Published:
MDPI AG
Subjects:
Phase lag
Coordinate transformations
Neural networks
Phase locked loops
Position sensing
Bandwidths
Compensators
Sensors
Back propagation networks
Steady state
Adaptation
Synchronous motors
Design
Algorithms
Electrical equipment
Error analysis
Methods
Machine learning
Boundary layers
Parameters
Permanent magnets
Electric equipment
Error compensation
Position errors
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Abstract:In commercial electrical equipment, the popular sensorless drive scheme for the interior permanent magnet synchronous motor, based on the quasi-sliding mode observer (QSMO) and phase-locked loop (PLL), still faces challenges such as position errors and limited applicability across a wide speed range. To address these problems, this paper analyzes the frequency domain model of the QSMO. A QSMO-based parameter adaptation method is proposed to adjust the boundary layer and widen the speed operating range, considering the QSMO bandwidth. A QSMO-based phase lag compensation method is proposed to mitigate steady-state position errors, considering the QSMO phase lag. Then, the PLL model is analyzed to select the estimated speed difference for transient position error compensation. Specifically, a transient position error compensator based on a feedback time delay neural network (FB-TDNN) is proposed. Based on the back propagation learning algorithm, the specific structure and optimal parameters of the FB-TDNN are determined during the offline training process. The proposed parameter adaptation method and two position error compensation methods were validated through simulations in simulated wide-speed operation scenarios, including sudden speed changes. Overall, the proposed scheme fully mitigates steady-state position errors, substantially mitigates transient position errors, and exhibits good stability across a wide speed range.
ISSN:2079-9292
DOI:10.3390/electronics13153085
Source:Advanced Technologies & Aerospace Database