Minimization of Starting Torque and Inrush Current of Induction Motor by Different Starting Methods using MATLABSIMULINK

Abstract

Induction motors are considered nowadays the most commonly used electrical machines, which are mainly used as electrical induction motors and sometimes as generators. This is mainly due to the simplicity of composition, low price, light weight, high reliability, easy to command and control performance and not containing parts that could easily breakdown compared with DC machines and synchronous machines. Starting the IM is the most important and dangerous step, where the motor properties play a major role in the evaluation of all electrical motors, and these properties are defined by the following factors:Starting torque. starting current. transient state. smoothness of the starting, simplicity and economics of starting.In this paper, three different methods of starting three-phase Induction Motor are discussed and compared through curves of currents, torque, speed. These methods are Direct On Line, Auto Transformer, Star-Delta, for a constant power load condition. Simulation is made in MATLAB/SIMULINK and comparatively results are estimated to evaluate the best starting method for different range of induction motor rating.

Development of a Starter with Protective Systems for a Three-Phase Induction Motor

“…For this model, a 1.5 KW induction motor was used. Since the rating is smaller than 3.75 KW [14], a direct on-line starting method was adopted.…”

Asenkron Motor Geometrisinin Motor Yol Alma Süresine Etkilerinin İncelenmesi

“…Grover ve Mankar çalışmalarında üç fazlı bir asenkron motorun yol alma anındaki moment, akım ve devir sayısı eğrilerinin değişimini direk şebeke bağlantı yapılarak, yıldız-üçgen yol vererek ve oto transformatör gibi üç farklı yöntem ile incelemişlerdir. En kısa sürede devir sayısına ulaşan yöntemin yıldız-üçgen yol verme yöntemi olduğu ifade edilmiştir [11]. Kim çalışmasında, sincap kafesli bir asenkron motorun yol alma karakteristiklerini, rotor malzemesine ve farklı rotor oluk şekilleri için analiz etmiştir.…”