Investigation of synchronous reluctance motors for feed drives in machine tools
Final Report Abstract
The aim of this project is to investigate the use of the synchronous reluctance motor (SynRM) as feed drive for machine tools. Nowadays, this type of motor has only been used in pump or fan industries, as these do not have high requirements in terms of dynamics and accuracy. One reason against its usage in servo applications are the nonlinear behaviors of the motor, such as magnetic saturation and torque ripple. Within the scope of the project, a commercially available SynRM was investigated. Offline and online methods were developed to identify the motor parameters. Various nonlinear control approaches, such as PI gain scheduling, deadbeat current control, and model predictive current control, were investigated both simulatively and experimentally. To further investigate the positioning behavior of the SynRM, it was installed in a feed drive test bench. Finally, to demonstrate the applicability of the SynRM in feed drives, a workpiece was manufactured using the motor. Based on numerous measurements in the time and frequency domain, it can be concluded that the SynRM can achieve comparable performance to PMSM servo motors. Thus, the goal of this project has been achieved.
Publications
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Werkzeugmaschinenlabor WZL der RWTH Aachen: WZL-Jahresbericht 2021, Aachen, S. 28.
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An extended LuGre model for estimating nonlinear frictions in feed drive systems of machine tools. Procedia CIRP, 107, 452-457.
Xi, Tiandong; Fujita, Tomoya; Kehne, Sebastian; Ikeda, Ryosuke; Fey, Marcel & Brecher, Christian
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Application of Optimal Control for Synchronous Reluctance Machines in Feed Drives of Machine Tools. 2022 International Conference on Electrical, Computer and Energy Technologies (ICECET), 1-6. IEEE.
Xi, Tiandong; Kehne, Sebastian; Fey, Marcel & Brecher, Christian
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Investigation of Synchronous Reluctance Machines for Feed Drive Axes in Machine Tools. 2022 International Conference on Emerging Trends in Electrical, Control, and Telecommunication Engineering (ETECTE), 1-6. IEEE.
Xi, Tiandong; Kehne, Sebastian; Fey, Marcel & Brecher, Christian
