Rotor levitation by active magnetic bearing using digital state controller

Author

Sabirin, Chip Rinaldi ; Binder, Andreas

Author_Institution

Inst. for Electr. Energy Conversion, Darmstadt Univ. of Technol., Darmstadt

fYear

2008

fDate

1-3 Sept. 2008

Firstpage

1625

Lastpage

1632

Abstract

Active magnetic bearings (AMB) find extended application in high-speed rotating electrical machines due to the contact-free operation, which reduces the overall machine wear. Previous research on the control system for the AMB dealt mostly with PID controller, with its advantage of simple design. Improvements using faster control access to the plant can be realized by state-space control. Additionally, the magnetic bearing as a MIMO (multiple-input multiple-output) system can be better described by the state-space equations. A digital state controller is applied to levitate a rotor of a 40-kW 40000-rpm PM synchronous machine. Simulation and measurement results are given for zero speed operation at an AMB test-rig.

Keywords

MIMO systems; digital control; machine control; magnetic bearings; magnetic levitation; permanent magnet machines; state-space methods; synchronous machines; three-term control; MIMO system; PID controller; PM synchronous machine; active magnetic bearing; contact-free operation; control system; digital state controller; high-speed rotating electrical machines; multiple-input multiple-output system; rotor levitation; state-space equations; Contacts; Control systems; Digital control; Equations; MIMO; Magnetic levitation; Synchronous machines; Testing; Three-term control; Velocity measurement; DSP; Magnetic bearings; optimal control; test bench;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Motion Control Conference, 2008. EPE-PEMC 2008. 13th

Conference_Location

Poznan

Print_ISBN

978-1-4244-1741-4

Electronic_ISBN

978-1-4244-1742-1

Type

conf

DOI

10.1109/EPEPEMC.2008.4635500

Filename

4635500