Cooperative Rotor Position Estimation of Active Magnetic Bearings in Flywheel energy storage system with Unsaturated Magnetic Bias

DOI

10.2991/icitmi-15.2015.35How to use a DOI?

Keywords

Self-sensing; active magnetic bearings; unsaturated magnetic bias; cooperative position

Abstract

A strategy of cooperative position estimation is proposed based on the differential control mode of active magnetic bearing (AMB). Given unsaturated magnetic bias, one of the opposing pole pairs must be unsaturated. The unsaturated poles could be tracked by the control current polarity. The position estimation from the unsaturated poles is always chosen as system feedback. Basic theory of unsaturated magnetic bias is discussed and the experimental method of measuring the maximum value of unsaturated current bias is presented. This cooperative position estimation is tested in the 4-DOF AMBs system. Static and dynamic suspension experiments are held to prove the feasibility of this method. Experimental results show that, the self-sensing AMBs system using this strategy exhibits stronger rejection to magnetic saturation. And this strategy proves the performance of force disturbance and increases system stability.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - M. Tang
AU  - L.J. Ding
AU  - M. Li
AU  - H. Zhang
AU  - W. Wei
AU  - F. Tang
AU  - G. Chen
PY  - 2015/10
DA  - 2015/10
TI  - Cooperative Rotor Position Estimation of Active Magnetic Bearings in Flywheel energy storage system with Unsaturated Magnetic Bias
BT  - Proceedings of the 4th International Conference on Information Technology and Management Innovation
PB  - Atlantis Press
SP  - 194
EP  - 202
SN  - 2352-538X
UR  - https://doi.org/10.2991/icitmi-15.2015.35
DO  - 10.2991/icitmi-15.2015.35
ID  - Tang2015/10
ER  -