Design and simulation of a buck – boost PFC converter with the approach of reducing the THD of input current

In this article it is tried to design a PFC (Power Factor Correction) circuit on the base of Buck – Boost converter in order to increase the power quality transmission of the input voltage source. The first step of this circuit’s processing is to rectify the AC input voltage to a DC voltage but due to the use of diodes (in the H – bridge structure; which conduct the current just in a short time of each period the input current’s THD (Total harmonic distortion) will increase. The lower THD of input current, the higher input power factor of the PFC converter as a result it is tried to increase the input power factor of the PFC converter. The output of the power factor correction process is a huge DC (Direct current) voltage which is regulated in the range of ۴۰۰ volts with the help of control circuit. In this article the Boost mode of the Buck – Boost converter is considered.

کلیدواژه ها:

Power Quality ، Power factor ، Efficiency