Alternative Title:


Advanced motor control engineering introduces modern, new technology for controlling which employs methods and techniques having nothing to do with relays and generally with any mechanical logic devices, any more. Instead, power electronic devices are used. These are controlled by analoque or digital ccts which either programmable or one fuction ccts. If programmable, personal computers perform their programing.
The scope of the present project is to introduce, analyse and apply amethod for the starting of 3-phase induction motors utilizing power electronics. The method is known as "Soft starting of an induction motor".
The primary emphasis in this project is given in designing and developing the control cct used for driving the power cct. Together with the represantation of the varius parts of the control cct, a detailed analysis of those parts is provided.
The soft starting of an induction motor, is an advanced method, which comes to substitute the previous methods where mechanical starters and relays were used. The new method is cheaper, its construction takes less space and it can provide protection of the motor, such as phase failure. Also, the torque of the rotor and hence of the shaft is increased smoothighly, eliminating sudden movements and large surges of current in the stator windings are avoided.


Higher Technical Institute
Το πλήρες κείμενο είναι διαθέσιμο από το Υπουργείο Ενέργειας, Εμπορίου Βιομηχανίας και Τουρισμού.


Library of Cyprus University of Technology

Contributor :

John, D.





Item Identification:



Απαγορεύεται η δημοσίευση ή αναπαραγωγή, ηλεκτρονική ή άλλη χωρίς τη γραπτή συγκατάθεση του δημιουργού και κάτοχου των πνευματικών δικαιωμάτων.


Is part of:



Constantinou, Costakis , “Soft start- soft stop of an induction motor ,” Αψίδα, accessed June 1, 2020,