Design and Analysis of an Autotransformer Based 24-Pulse Rectifier
This paper presents the design and analysis of an autotransformer based 24-pulse rectifier. The proposed ac-dc converter is based on a star connected autotransformer, designed for producing 15-phase shifted ac voltages for 24-pulse rectifier for effective harmonic reduction. Compared with 3-phase rectifier, the proposed 24-pulse rectifier can reduce the equivalent capacity of transformers and realize the purpose of reducing the transformers' bulk and weight in same power. Meanwhile the proposed method can greatly minish the total harmonic distortion (THD) of supply current and make it near sinusoidal in shape.