The efficiency improvement of a single-stage soft-switching AC-DC PFC converter

摘要

The features of proposed the single-stage soft-switching AC-DC PFC converter has been confirmed by experiment as follows:rn(1)By reducing the inductance of the main transformer T_1, orrnincreasing the turn ratio of the transformer T_1 and T_2, the totalrnharmonic distortion will be improved.rn(2)As a prerequisite for fulfilling the severer harmonicsrnregulation of Class D, Increasing the inductance of the mainrntransformer as much as possible is effective to get a highrnefficiency.rn(3)A high power efficiency of 87.2% and power factor of 0.95rnfor output rating 24V/10A.