DOI Number : 10.5614/itbj.eng.sci.2008.40.2.2
Hits : 14

Analysis of Input and Output Ripples of PWM AC Choppers

Pekik Argo Dahono, Dessy Amirudin, Arwindra Rizqiawan & Deni

School of Electrical Engineering and Informatics. Institute of Technology Bandung


Abstract.

This paper presents an analysis of input and output ripples of PWM AC choppers. Expressions of input and output current and voltage ripples of single-phase PWM AC choppers are first derived. The derived expressions are then extended to three-phase PWM AC choppers. As input current and output voltage ripples specification alone cannot be used to determine the unique values of inductance and capacitance of the LC filters, an additional criterion based on the minimum reactive power is proposed. Experimental results are included in this paper to show the validity of the proposed analysis method.



Keywords: AC Chopper; LC filter; PWM, Ripple; Voltage regulator.

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