Study on control method of magnetic bearing for high speed machine

Author

Zhao, Yong ; Wang, Fengxiang

Author_Institution

Sch. of Electr. Eng., Shenyang Univ. of Technol., Shenyang

fYear

2008

fDate

17-20 Oct. 2008

Firstpage

1535

Lastpage

1538

Abstract

This paper mainly aims at the effects of different control methods on the precision of rotor position for a high speed machine with magnetic bearings. The conventional PID controller with two-level pulse width modulation (PWM) switching power amplifier makes the rotor position change on a large bandwidth. In this paper, the differential forward PID with three-level PWM switching power amplifier is introduced for magnetic bearing of high speed machine. The simulation and experimental results show that the proposed method can enhance the control precision of the rotor position.

Keywords

angular velocity control; electric machines; machine bearings; machine control; magnetic bearings; power amplifiers; conventional PID controller; high speed machine; magnetic bearing control method; rotor position; three-level PWM switching power amplifier; two-level pulse width modulation; Bandwidth; Differential amplifiers; High power amplifiers; Magnetic levitation; Magnetic switching; Power amplifiers; Pulse amplifiers; Pulse width modulation; Space vector pulse width modulation; Three-term control; control method; high speed machine; magnetic bearing; rotor position precision;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2008. ICEMS 2008. International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-3826-6

Electronic_ISBN

978-7-5062-9221-4

Type

conf

Filename

4770971