Performance investigation of a single-phase unidirectional buck convertor for improved power quality

AC/DC converters find use in numerous applications. Diode bridge rectifiers and phase controlled converters replace AC/DC converters in various applications, but their use is limited by their severe power quality problems like injection of harmonics in line current and flow of reactive power. A design of a AC/DC buck converter is proposed which improves the source power factor. The results are observed on oscilloscope and the model is realized through simulations also.