Design and Installation of Passive Power Filter for Grid-connected Solar Rooftop Applications at Industrial Plants

Abstract

This paper presents a study of harmonic filters design to minimize harmonic distortion caused by a harmonic source such as ac drives and solar rooftop inverters. To avoid a problem caused by the harmonics which is produced from ac drives and solar inverters, the Passive Power Filters System (PPFs) are presented. The analysis includes the basic principles, the KMITL Program and economic aspects of the harmonic filter design. The major objectives in the study are to improve the power factor, to reduce current and voltage distortion and to reduce resonance problems at a system. Practically, it is ensured that the PPFs is the best solution applied for grid-connected system. The results show that the 5th harmonic filters are a very appropriate solution for most typical harmonic problems.