Problems of passive filters application in system with varying frequency

This paper is focused on problems of power quality in systems with varying frequency, equipped with passive harmonics filter. Main differences between the ship system and land network have been pointed out. Influence of varying frequency on proper work of harmonic passive filters frequency change was presented. Simulation circuit and simulations results of theoretical research have been described. Especially influence of frequency on proper work of 5^th and 7^th harmonic filters was commented on.