Title :
Direct suspension displacement control for bearingless permanent magnet motors
Author :
Ding, Qiang ; Fang, Wei
Author_Institution :
Dept. of Electr. & Electron. Eng., Nanjing Inst. of Ind. Technol., Nanjing, China
Abstract :
In this paper a polar-coordinate mathematical model of suspension force of bearingless permanent magnet motor is derived based on traditional suspension force model. Combined with space vector pulse with modulation algorithm, the direct suspension displacement control is proposed depending on the polar-coordinate mathematical model and the suspension current closed-loop control is omitted using the proposed control strategy. So the suspension control is simplified. The simulation results show the proposed control strategy can enhance system dynamic performance and achieve stable suspension under rated work condition.
Keywords :
closed loop systems; displacement control; force control; machine control; permanent magnet motors; suspensions (mechanical components); bearingless permanent magnet motors; direct suspension displacement control; polar coordinate mathematical model; suspension current closed loop control; suspension force; Couplings; Force; Magnetic levitation; Mathematical model; Suspensions; Torque; Windings; Bearingless motor; Polar-coordinate model; Space vector pulse with modulation; Suspension displacement;
Conference_Titel :
Modelling, Identification and Control (ICMIC), Proceedings of 2011 International Conference on
Conference_Location :
Shanghai
DOI :
10.1109/ICMIC.2011.5973723
