Voltage Extinction-Angle Control of Grid-Connected Induction Generator

Abstract

This paper presents a complete analysis of an induction generator linked to the power network through an ac voltage controller aiming to control the generated active and reactive power at different speeds. The ac voltage controller uses the extinction angle strategy to control the generator terminal voltage. The generator performance characteristics regarding the harmonic distortion factors, active power, reactive power, power factor, torque ripples and efficiency have been computed at different speeds. These characteristics have been determined with the help of a novel equivalent circuit in the frequency domain.