Robust Angle-Sensorless Control of a PMSM Bearingless Pump

In the semiconductor industry, where bearingless pump systems are employed as the state-of-the-art technology, the trend goes toward higher fluid temperatures (150degC and more) in order to further increase process efficiency. This fact translates into the requirement of a high-temperature bearingle...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2009-06, Vol.56 (6), p.2076-2085
Main Authors: Raggl, K., Warberger, B., Nussbaumer, T., Burger, S., Kolar, J.W.
Format: Article
Language:English
Subjects:
Angle synchronization
bearingless pump
Degradation
Drift
Electric potential
Electronics industry
Open loop systems
permanent-magnet synchronous machine (PMSM)
Pumps
Robust control
Semiconductors
Sensor systems
Sensorless control
State of the art
Stators
Synchronism
Temperature
Temperature sensors
Thermal sensors
Voltage control
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In the semiconductor industry, where bearingless pump systems are employed as the state-of-the-art technology, the trend goes toward higher fluid temperatures (150degC and more) in order to further increase process efficiency. This fact translates into the requirement of a high-temperature bearingless pump system and/or the elimination of thermal-critical components such as Hall sensors. This paper introduces a new method for a hall-sensorless control of a permanent-magnet synchronous machine bearingless pump in its operating range from 0 to 8000 r/min and from zero load to full load. The sensorless operation is performed by the following three novel control functionalities: a controlled startup routine, enabling a sure levitation and zero-angle setting; an open-loop angle estimation based on stator voltage and stator current measurement and known machine parameters; and an angle synchronization establishing a robust operation of the pump in the whole operating range even for a large machine parameter drift. In particular, considering the temperature degrading of the permanent-magnet flux density, the novel robust control concept is of great benefit for bearingless pump systems employed in high-temperature applications.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2009.2014745