A nonconventional method for fast starting of three phase wound-rotor induction motors

Badr, M.A.; Abdel-Halim, M. A.; Alolah, A.I.

doi:10.1109/60.556366

Cited by 12 publications

(10 citation statements)

References 2 publications

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“…Several studies have been done to improve starting properties of an induction motor [2][3][4][5]. During starting period, slip is equal to unity by considering the equivalent circuit of an induction motor, so the input impedance seen from supply side has the lowest value, because of that a very high current is drawn by motor during starting period, therefore it is always recommended to use the drivers which limit the starting current [6][7][8], and when motor starts directly i.e.…”

Section: Soft Startingmentioning

confidence: 99%

Intelligent Induction Motor Drive

Gupta¹,

Ruchika²

2012

IJCA

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Electrical drives play an important role in rapidly growing industrial era, so the controlling of electrical drives is also important. Variable speed drives are the major part of power system, microelectronic, power plant and so on. Conventional controlling methods of electrical drives needed mathematical model of control process which was very tedious, that problem is solved by artificial intelligence which contains both hard computation and soft computation. Artificial intelligence has found high application in most nonlinear systems same as motor drive. As no mathematical model is needed for artificial intelligent system so efficiency and reliability of drives increase and volume, weight and cost of drives decrease. Soft starters are widely used with electronic motor as it provides improved operating characteristics and better control. Soft starter also reduces the wear and tear effects on motor and their associated drive systems which in turn reduces maintenance, conserve energy and plays a significant part in improving system performance so the escalators, pumps, elevators and conveyor belts can be operated more effectively with soft starter.

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Section: Soft Startingmentioning

confidence: 99%

Intelligent Induction Motor Drive

Gupta¹,

Ruchika²

2012

IJCA

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“…The IM starting process is the basic scientific and practical problem of this machine with a long tradition of observation [3][4][5][6][7][8][9][10][11][12][13][14][15]. The most common starting method of this machine is the direct-on-line method [3,4,8,11], which can be realized with or without the reduced voltage technique.…”

Section: Introductionmentioning

confidence: 99%

“…The comparison between different conventional starting methods is presented in [9][10][11]. On the other hand, in the available literature [6,[13][14][15] many other IM staring methods can be found. Other IM starting methods are based on the usage of soft starters [13,14] or on the shunting of the stator and rotor windings [6], whereas others require the usage of power electronic devices [15].…”

Section: Introductionmentioning

confidence: 99%

An invertible dependence of the speed and time of the induction machine during no-load direct start-up

Ćalasan

2019

Automatika

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In this paper, an invertible dependence of the speed and time of the induction machine during no-load direct start-up is presented. Namely, based on the parameters of the induction machine equivalent circuit as well as on the basic, well-known, equation for machine torque, the analytical expression for the induction machine time-speed dependence during direct startup is derived. On the other hand, in order to obtain inverse i.e. speed-time dependence, the derived time-speed expression is rearranged in one nonlinear equation. As the derived nonlinear equation does not have an analytical solution, a novel iterative procedure, based on the usage of Lambert W function, is proposed for its solving. The results obtained by using the developed expressions for speed-time or time-speed curves are compared with the corresponding results obtained by using expressions known in the literature as well as with the results obtained by using a numerical time-domain computation method. Moreover, the results obtained by using the developed expressions have been compared with the corresponding experimental results to demonstrate the accuracy of the derived expressions. The Matlab code developed for solving the presented iterative procedure, as well as the Matlab code for induction machine speed-time curve determination, is also provided.

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“…T his method has been investigated theoretically and experimentally [4]. It has been realized that it gives a tremendous increase in the average starting torque, and hence lower starting time when the rotor winding has a sequence opposite to that of the stator winding.…”

Section: Introductionmentioning

confidence: 99%

Torsional Oscillation Problems Associated with Shunt Induction Motor Driving Distributed Inertias

Airouche¹

2001

Electric Power Components and Systems

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Shunt co nnectio n has bee n recently pro po sed by the autho rs to attain fast starting o f slip-ring inductio n motors. Torsion al to rque s, whic h might be e xpe rie nced with this co nnectio n, is a re se rvatio n of this method and should be investigated. T here fo re , this pape r analyze s the e xpec ted torsio nal problems o f the shafts o f these motors whe n driving distributed inertias. T he analysis aims at investigatin g the develo ped pulsating torque, the re sulting torsio nal osc illations, the transmitted torque s, and the twist angles at di OE ere nt shaft sections. E OE ec ts of moto r paramete rs on the to rsio nal o sc illation proble m are studied. Fo r this purpose , a rigo ro us mathe matical mode l is pre sented and simulated by a deve loped computer program.

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A nonconventional method for fast starting of three phase wound-rotor induction motors

Cited by 12 publications

References 2 publications

Intelligent Induction Motor Drive

Intelligent Induction Motor Drive

An invertible dependence of the speed and time of the induction machine during no-load direct start-up

Torsional Oscillation Problems Associated with Shunt Induction Motor Driving Distributed Inertias

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