Title
Self-Sensing Active Magnetic Bearing Using 2-Level Pwm Current Ripple Demodulation
Abstract
This paper deals with the implementation of a position estimation method for a small radial active magnetic bearing. Thus, the rotor position is not measured with a sensor but demodulated from the phase current ripple, excited by the 2-level pulse width modulated phase voltages. The mathematical description of the phase currents is given and the demodulation procedure for obtaining the rotor position is outlined. Stable levitation of the rotor is achieved by this method without the need of any physical position sensor. Measurements regarding the estimated sensor signal quality and its dynamic behavior are conducted. Possible future improvements are discussed.
Year
DOI
Venue
2013
10.1109/ICSensT.2013.6727721
2013 SEVENTH INTERNATIONAL CONFERENCE ON SENSING TECHNOLOGY (ICST)
Keywords
DocType
ISSN
Active magnetic bearing, Self-sensing, Pulse width modulation, Current ripple demodulation
Conference
2156-8065
Citations 
PageRank 
References 
0
0.34
2
Authors
4
Name
Order
Citations
PageRank
wolfgang gruber110.72
manuel pichler200.34
michael rothbock300.34
Wolfgang Amrhein4788.29