Publication

Abstract : Most of our industry needs dc voltages for its applications, so they are using rectifier at the front end for converting ac to dc. The enormous use of single phase converters has created lot of power quality issues in electrical systems; Mainly THD of input current is very high. This input current harmonics is very detrimental. It reduces the power factor, damages other electrical equipments and pollutes line power systems. Commonly used method for reducing THD is to use a power factor improvement circuit. This paper analyses the operation of high quality CUK rectifier module as a power factor correcting device in continuous conduction mode. The control scheme consists of an inductor current calculator and an output voltage loop.