Date of Award
Electrical and Computer Engineering
Dr. Narayan Kar
Applied sciences, Pure sciences
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
The use of induction motors in modern industry become increasingly high. Induction motor starting phenomenon has an important impact on the industrial loads and dynamics of the power system. Induction motor consumes tremendous amount of reactive power during starting, resulting in considerable drop in the terminal voltage. The starting current of the motor increases six to seven times of the rated current and starting time extends. This voltage depression during the starting transient period affects the starting and acceleration torque of the motor, as it is a function of the voltage. In this research work, starting performance of induction motor is investigated and analyzed comprehensively.
To minimize the terminal voltage drop of the motor during starting, reactive power compensation is required. Static VAR compensator (SVC) and shunt capacitors are used as a source of reactive power for both 50 hp and 500 hp motors. By employing SVC and shunt capacitors, significant improvement in the terminal voltage is achieved with less starting time for different loading conditions.
The saturation takes place in almost all induction electrical machines and induction motors are no exceptions. Transient saturated induction motor (50 hp) model is developed to investigate the effect of main flux saturation on the starting performance for different loading conditions.
Choudhary, Muhammad, "A study of saturated induction motor starting performance" (2008). Electronic Theses and Dissertations. 7995.