Pole-changing motor for lift installation

Makhsud Bobojanov,Khayotullo Magdiev,Khusniddin Shamsutdinov,Dauletbek Rismuxamedov,Furkat Tuychiev,N Voropai,A Michalevich,H Guliev,S Senderov

doi:10.1051/e3sconf/202021601164

Makhsud Bobojanov, Khayotullo Magdiev + Show 7 more

Open Access

https://doi.org/10.1051/e3sconf/202021601164

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Abstract

The Numerous lift installation require two speeds of rotation for the work. One of them is necessary for lifting, and another for exact stop of a cabin at a level of a floor. Now in these installations two speed motors with two separate windings are used. In this paper the opportunity of creation of the highly effective two-speed motor with pole-changing winding for lifts and elevator installations is considered. The industrial test results of motors with such windings are shown. The advantages of motors with pole-changing windings over conventional motors with two separate windings are given.

Highlights

Two-speed induction motors (TSIM) with the big difference of speeds are widely used in numerous liftand elevator installations and agricultural machines [1]
1 New method of design of polechanging windings In Tashkent State Technical University named after Islam Karimov (Uzbekistan) new method of the design polechanging windings - Discretely Specified Spatial Function Method (DSSFM) is carried out [4, 7, 13, 14]
The results of tests have shown [12], that the new two-speed motor on a ratio of speeds 1500rpm /375 rpm has useful powers 10/2.5 kW, the value of currents and torques are in allowable limits

Summary

Introduction

Two-speed induction motors (TSIM) with the big difference of speeds are widely used in numerous liftand elevator installations and agricultural machines [1] In most cases these mechanisms operate under intense working conditions and with a high switching rate (up to 200 cycles/h). Motors in use usually have two separate windings on the stator for the two speeds This involves a considerable deterioration in the effectiveness of the motor, and a reduction in its energy parameters; it complicates manufacture and repair. There is considerable scope for increasing the effectiveness of the motor Improvement of such motors is possible by using of one pole-changing winding (PCW) instead of two separate, that allows to increase useful powers and improve power parameters of two speed motors from both pole and to simplify technology of manufacturing and repairing. An urgent issue is the study of the operation of such engines in dynamic operating modes [6]

New method of design of polechanging windings

Design of new pole-changing winding

Experimental Model and Results

Conclusion