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

fYear

2011

fDate

26-29 June 2011

Firstpage

316

Lastpage

318

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Modelling, Identification and Control (ICMIC), Proceedings of 2011 International Conference on

Conference_Location

Shanghai

Type

conf

DOI

10.1109/ICMIC.2011.5973723

Filename

5973723