Hybrid modulation technique for improvement of Power Factor and Harmonic Distortion in 24 pulse AC-DC Converter

The deviation of voltage and current from its ideal waveform is the main power quality issues of the power system. This deviation is caused by the switching of solid-state devices that introduced the harmonic component in the power system. According to this present work 24-pulse control converter having different types of tropology gives the comparative results by the fast Fourier transform. In this paper firstly a diode type converter is designed but its result is not satisfied according to IEEE standard 519-1992. Further used gate pulse-based electronic switches with PWM (Pulse width modulation) technique by replacing the diodes but its THD (total harmonic distortion) is greater than 5%, to overcome the THD level applying different type of topologies such as bipolar PWM converter, unipolar PWM converter, and hybrid PWM converter, after comparing the results of the above topology hybrid PWM converters gives better results.