Abstract
THE SIMULATION OF VVVF CHARACTERISTICS WITH SCALAR CONTROL
Workineh Geleta Negasa*
ABSTRACT
The three-phase AC asynchronous motor has complex dynamic and static characteristics. Consequently, effective control of the rotational speed and flux linkage experiences a troubling scenario. Numerous control strategies have been reported in the literature and the v/f control method is among easily realizable control methods with fewer controller parameters. In this paper, analysis of the constant voltage- frequency ratio control method of induction motor is presented based on the steady-state equivalent model. Furthermore, the performance of open-loop and closed-loop v/f control of induction machine is presented considering different operational conditions. A MATLAB/Simulink environment is adopted to model the system.
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