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Shorted Turn in the Hybrid Magnet Engine Valve Actuator for Enhanced Dynamic Performance
Journal of Magnetics, Volume 18, Number 4, 31 Dec 2013, Pages 466-472
Hwa Cho Yi (Shool of Mechanical Engineering, Yeungnam University), Ki Il Hwang (LG Electronics), Jihun Kim (Korea Aerospace Research Institute), Jin Ho Kim * (Shool of Mechanical Engineering, Yeungnam University)
Abstract

This paper presents a new design of the hybrid magnet engine valve actuator using the shorted turn for
enhanced dynamic performance. The quick response of coil electric current is the most important factor that determines the opening and closing performance of the hybrid magnet engine valve. The conventional hybrid magnet engine valve actuator, however, has a delayed initial electric current rising when it is driven by voltage control because of the coil inductance which is a typical characteristic of an electromagnetic coil. A shorted turn is newly placed into the upper yoke of the hybrid magnet engine valve actuator to reduce coil inductance and thus, to hasten the initial electric current rising. We performed a dynamic finite element analysis to demonstrate the improvement of the dynamic characteristics of the hybrid magnet engine valve actuator due to the shorted turn.


 

Keywords: flat coil actuator; shorted turn; center pole; inductance; lumped parameter analysis; experiment
DOI: http://dx.doi.org/10.4283/JMAG.2013.18.4.466
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