Title :
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
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;
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
