This paper discusses the impact of using 3-phase and multipules converter circuit commonly found in unity power factor at input AC mains and regulates output voltage.3-phase thyristor rectifiers have been used in industries for obtaining a variable DC voltage, but they have a problem of including large lower-order harmonics in the input currents. For high-power applications, a 12- pulse, 18-pulse and 24-pulse configuration is useful for reducing the harmonics, but it still includes the (np±1) th (n: integer, p: pulse) harmonics. In this paper present the rectifiers are using the MATLAB/SIMULINK simulation model and several common conditions will be simulated to compare their harmonic levels.

An Improved Power-Quality 30-Pulse ACG__DC for Varying Loads.rar
sixpulserload.rar
thirtydiode.rar
twelvedioder.rar
eighteen_modactual.rar

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