Comparison of flywheel systems for harmonic compensation based on wound/squirrel-cage rotor type induction motors

摘要

This paper describes two different systems which can compensate harmonic currents generated in a power system. As non-linear loads increase gradually in industry fields, harmonic current generated in the electric power network system also increase. Harmonic currents make power network currents distorted and generate heat, vibration and noise in the power machinery. Many approaches have been applied to compensate harmonic currents generated in the power system. Among various approaches, in this paper, two approaches are compared and evaluated. They are flywheel compensators based on wounded rotor induction motor and squirrel cage induction motor. Both systems have a common structure. They use a flywheel as an energy storage device and use pulse width modulation inverters. The main differences are the size and rating of the converter used.