Speed Control of Magnetic Drive-Trains with Pole-Slipping Amelioration

Liao, Xiaowen, Bingham, Chris and Smith, Tim (2022) Speed Control of Magnetic Drive-Trains with Pole-Slipping Amelioration. Energies, 15 (21). ISSN 1996-1073

Full content URL: https://doi.org/10.3390/en15218148

Speed Control of Magnetic Drive-Trains with Pole-Slipping Amelioration
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Item Type:Article
Item Status:Live Archive


The paper introduces new techniques to reduce the potential for pole-slipping induced by control systems and presents a low-cost pole-slipping detection and recovery scheme for magnetic drive-trains (MDTs). For the first time, the paper shows that a combination of electromagnetic and load-torque excitations which individually are not greater than the maximum coupling torque can initiate pole-slipping. For applications where acceleration feedback is unavailable, the motor-side inertia is virtually increased with a tracking differentiator to provide feedback of acceleration. Subse- quently, controller design and parameter optimization are discussed. Experimental measurements on a custom test facility verify the presented principles that low-bandwidth controller designs with low inertia ratios can accommodate a wider range of on-load startup torque and load-torque disturbances without pole-slipping. To address overload issues, a pole-slipping detection method based on the kurtosis of electromagnetic torque and a recovery strategy based on converting the state of pole- slipping into that of on-load startup are presented. Experimental results demonstrate that detecting slip anomalies without load-side information, and recovery from pole-slipping without auxiliary mechanical devices are both feasible.

Keywords:—Magnetic drive trains, Dynamic analysis, speed control, pole-slipping detection and recovery
Subjects:H Engineering > H360 Electromechanical Engineering
Divisions:College of Science > School of Engineering
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ID Code:52289
Deposited On:21 Nov 2022 15:48

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