Design and simulation a Buck-Boost PFC converter with low THD value 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 will increase. The lower THD (Total Harmonic Distortion) 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:

PFC ، PF ، THD ، Buck – Boost converter ، AC input