الفهرس 
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Abstract
Many industrial applications require variable speed drives. Conventional motors such as
dc motors or Asynchronous motors (induction motors) can be used. Each motor drive has
merits and demerits.
This project investigates the indirect vector control of induction motor drive guiclecl by its
advantages and disadvantages. Vector controlled IM drive emulates de drives.
Accordingly, the performance of the vector controlled induction motor drive can be
compared with de motor drive for the same rating.
The performance includes torque-speed and torque-current characteristics for both drive
systems.
A comprehensive study of vector control (also called field-oriented control) is presented in
this thesis namely the indirect type of rotor-flux-based voltage vector control, where the
induction machine can be operated over a wide speed range, including zero speed, with
rapid, accurate torque control and good momentary overload capabilities.