Vector control of IM

No Thumbnail Available
Date
2018
Authors
Mohsen, Waed
Bolus, Maha
Hasan, Abeer
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
The 3-phase alternating current (AC) induction motors, which is the most widely used motor type in the industry has been favored because of its good self-starting capability, simple and rugged structure, low cost and reliability and capable of more torque and efficiency than single phase AC motors. A 3-phase AC induction motor can be controlled by varying its inputs according to a mathematical model of the rotor flux field in a complex vector space (vector control). The concept of vector control has opened up a new possibility that induction motors can be controlled to achieve dynamic performance as good as that of DC or brushless DC motors. Vector control provides efficient and accurate control of the motor’s speed and torque. The vector control analysis of an induction motor allows the decoupled analysis where the torque and the flux components can be independently controlled (just as in dc motor). In order to analyses vector control, we need to develop a dynamic model of the IM. This is done by converting the 3-ø quantities into 2-axes system called the d-axis and the q-axis. The Speed Control of Induction motor is one of the important areas of research for the Electrical Engineers. Since the requirement and industrial applications of induction motors cannot be neglected, their fine speed control is one of the major objectives for the control drive engineers. The vector control of induction motors provide one of the most suitable and popular speed control technique presently used. The scalar control techniques available on the contrary were simple to implement but have the coupling effect ultimately responsible for the sluggish response which further made system prone to instability due to higher order system effect. This paper will show the comparison of vector control using PI Controller with the rotor flux estimation .The simulation study of results will form the basis of the conclusion. Vector control offers a number of benefits including speed control over a wide range, precise speed regulation, fast dynamic response, and operation above base speed. In our project, the vector control saved a lot of money to university as if it is wanted to buy a prepared programmable vector control experiment to apply in the IM offered it will cost a lot.
Description
Keywords
Citation