Apfc Circuit Parallel Flow Technology

A new technique useful for parallel connection of commutation cells is introduced in this paper, it consists of using small inductance in order to ensure dynamic and static share of the commutated current among the different switches. Operation principle, theoretical analysis and designing procedure are presented.Experimental results, obtained from a 3000W boost prototype using two commutation cells. The practical circuit presented a power factor of 0.97,a harmonic percent (input current) of 6.5% and an overall efficiency of 97.5%.The results accord with IEC555-2 and have been used to validate the theoretical analysis and demonstrate the effectiveness of the proposed technique.