Title :
Statistic properties of a sensorless control method for a three phase permanent magnet biased radial active magnetic bearing
Author :
Hofer, Matthias ; Schrödl, Manfred
Author_Institution :
Inst. of Electr. Drives & Machines, Vienna Univ. of Technol., Vienna, Austria
Abstract :
In this paper a sensorless control method for position control of a radial active magnetic bearing is investigated. This novel bearing concept consists of a three phase design utilized by a three phase voltage source inverter. Additionally the stator coils themselves are used for position sensing by electrical current and voltage signals. Especially statistic properties of position estimation during static and sensorless position controlling are discussed. The control architecture of the complete system is presented. Measurement results of the magnetic bearing prototype are used for verification of the theoretical expectations.
Keywords :
invertors; magnetic bearings; permanent magnets; position control; stators; electrical current; position control; position estimation; radial active magnetic bearing; sensorless control; statistic properties; stator coils; three phase permanent magnet; voltage source inverter; Coils; Inverters; Magnetic levitation; Magnetic properties; Permanent magnets; Position control; Sensorless control; Statistics; Stators; Voltage; INFORM method; active magnetic bearing; permanent magnet biasing; sensorless control; three phase AMB;
Conference_Titel :
Power Electronics and Applications, 2009. EPE '09. 13th European Conference on
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-4432-8
Electronic_ISBN :
978-90-75815-13-9
