Open AccessForce ripple and jerk minimisation in double sided linear switched reluctance motor used in elevator application
Author(s) -
Masoudi Siamak,
Feyzi Mohammad Reza,
Banna Sharifian Mohammad Bagher
Publication year - 2016
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
ISSN - 1751-8679
DOI - 10.1049/iet-epa.2015.0555
Subject(s) - jerk , control theory (sociology) , switched reluctance motor , ripple , elevator , motion control , linear motor , engineering , computer science , acceleration , physics , mechanical engineering , structural engineering , voltage , control (management) , electrical engineering , classical mechanics , artificial intelligence , rotor (electric) , robot
The linear switched reluctance motors (LSRMs) have many benefits such as simple structure, low cost, comparatively high force‐to‐mass ratio, and no need for mechanical rotary to linear motion converters. However, application of these motors is limited because of their force ripple. In this study, the LSRM is used in vertical motion and a new control strategy is proposed for reducing the force ripple. This method is based on instantaneous control of motor position, speed, phase current, and force. In order to realise the good motion quality of elevator, this study applies a speed profile based on minimum jerk model. Also, a new force distribution function is proposed that can properly distribute the total force among the phases. Using this function, phase currents can properly track the corresponding command currents and then, decrease undesirable ripples of output force considerably. The control system was implemented on a double sided four phase LSRM. Its performance is demonstrated by means of modelling and experimental results in elevator application.