Abstract This paper analyzes the influence of harmonics on system and importance power factor correction. According to requirements aircraft use, an active correction based three phase six switch topology is designed. The article working process control method system, then designs a rectifier convert 220V/400Hz AC provided by DC high. Moreover, performance tested.

here, we propose an optical filter and an optical power splitter based on two-dimensionalphotonic crystal all circular ring resonators. these structures are made of a square lattice ofsilicon rods with the refractive index n1=3.464 surrounded by air (with refractive indexn2=1). first, we have designed the filter and by using that, we designed a power splitter. thetransmission efficiency and qua...