IMPROVEMENTS ON THE ELECTRIC DRIVE ELEVATOR PROTOTYPE. PART I TECHNICAL ASPECTS

Abstract The objective of the paper is to present some improvements done on the previously described electric drive elevator prototype [1]. The modern electric elevator contains both the cabin (replaced at the research laboratory by one trolley), and the counterweight (replaced by the opposite trolley which contains modular weights). Through the appropriate gearbox the connexion between the pulley and electric motors is provided. The designed load of the elevator conducts to the 4kW three-phase squirrel cage driven motor supplied by the power inverter prototype through the chain transmission. The modified experimental platform is depicted and the adequate experimental results are provided.

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Prototype of an Electric Drive Elevator

The Scientific Bulletin of Electrical Engineering Faculty ◽

10.1515/sbeef-2016-0024 ◽

2017 ◽

Vol 0 (0) ◽

Author(s):

M. Gaiceanu ◽

S. Epure ◽

C. R. Dache ◽

S. Ciuta

Keyword(s):

Electric Drive ◽

Induction Machine ◽

Power Converter ◽

Experimental Platform ◽

Electric Drive System ◽

Ac Power ◽

Three Phase ◽

Chain Transmission ◽

Simulation Results ◽

Quality Features

Abstract The research purpose of the authors is reducing the energy consumption of the main worldwide consumer - the electric motors- by useful utilization of the input energy through the Regenerative Electric Drive System having also the power quality features. The prototype of the electric elevator consists mainly of two trolley: one serve for the active load, and the other as counterweight, gearbox, power converter, induction machine and chain transmission. The elevator is driven by using 4kW three-phase induction machine through AC-AC power converter and has the capacity of 450 kg. The numerical simulation results and the experimental platform are shown.

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The development of an energy efficient electric drive for agricultural machines

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/1211/1/012018 ◽

2022 ◽

Vol 1211 (1) ◽

pp. 012018

Author(s):

T M Khalina ◽

S Yu Eremochkin ◽

D V Dorokhov

Keyword(s):

Induction Motor ◽

Electric Drive ◽

Single Phase ◽

Induction Motors ◽

Semiconductor Device ◽

Squirrel Cage ◽

Squirrel Cage Induction Motor ◽

Three Phase ◽

Cage Induction Motor ◽

Agricultural Machines

Abstract Agriculture is a socially significant sector of the economy. The growth of agricultural production contributes to the stable development of society. It is necessary to use new mechanisms driven by induction motors to increase agricultural productivity. Three-phase induction motors are mainly used in the electric drive of agricultural machines. At the same time, it is advisable to use a single-phase network to supply power to remote farms. In this regard, the development of a single-phase electric drive using three-phase motors becomes relevant. In this work, a study of an original semiconductor device for starting a three-phase induction motor from a single-phase network is made. The simulation model of the device created in the Matlab Simulink environment made it possible to study the electromechanical characteristics of the induction motor when operating from a single-phase network. A comparison of the characteristics of the motor during operation from a three-phase and a single-phase network is carried out. The most significant results of the work are the data obtained that the developed device can be used to start and operate a squirrel cage induction motor from a single-phase network. At the same time, the engine energy parameters change slightly.

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PR Control of a Three-Phase Grid-Connected Inverter under Unbalanced Grid Voltages Condition

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.713-715.1019 ◽

2015 ◽

Vol 713-715 ◽

pp. 1019-1022

Author(s):

Kun Liu ◽

Zhen Xie

Keyword(s):

Theoretical Analysis ◽

Phase Locked Loop ◽

Experimental Results ◽

Effective Control ◽

Experimental Platform ◽

Fast Phase ◽

Three Phase ◽

Control Scheme ◽

Grid Connected Inverter ◽

Unbalanced Grid

The effective control of a grid-connected inverter (GCI) under unbalanced grid voltages condition is able to enhance the grid-connected operation ability of the inverter. This paper studies the control scheme of a three-phase GCI with proportional plus resonant (PR) regulators in the stationary αβ frame to remove the power ripples caused by the unbalanced condition and the currents of positive and negative components can be controlled directly without any decomposition. A precise and fast phase locked loop is also introduced in this paper. Three control targets are achieved on a 2KVA experimental platform of a GCI and the experimental results agree well with the theoretical analysis.

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