Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/9384
Title: Analysis of dynamic characteristics of permanent magnet contactor with sensorless displacement profile control
Authors: Wang, X
Lin, H
Ho, SL 
Fang, S
Jin, P
Keywords: Dynamic characteristics
Intelligent control strategy
Making process
Permanent magnet (PM) contactor
Sensorless
Issue Date: 2010
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on magnetics, 2010, v. 46, no. 6, 5467554, p. 1633-1636 How to cite?
Journal: IEEE transactions on magnetics 
Abstract: A new displacement profile control strategy based on pulse-width-modulation (PWM) for improving the dynamic characteristics and reducing the contact bounce of permanent magnet (PM) contactor during the making process is reported. Sensorless method of real time displacement signal detection is realized using magnetic circuit model (MCM) and electric circuit model (ECM). Finite element method (FEM) is used to obtain the nonlinear relationships among the flux linkage, displacement and current off-line. The information is then used for subsequent fast simulation of the dynamic characteristics of the contactor. A set of periodically inter-transferred dynamic characteristic equations are built and the complete making dynamic process of the PM contactor is simulated using 4th-order RungeKutta method. Experiments are carried out to validate the proposed control method on a prototype.
URI: http://hdl.handle.net/10397/9384
ISSN: 0018-9464
EISSN: 1941-0069
DOI: 10.1109/TMAG.2010.2044753
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