Mitigation of current harmonics in a solar hybrid system by installation of passive harmonic filters

There is a growing need for renewable energy systems especially solar PV systems to act as auxiliary sources of power and support the grid in meeting the demand. Though such a scheme may seem advantageous it also brings in various power quality issues due to the converters involved in the process of regulating the power obtained from PV panel. Harmonics is one of the major issues. Passive harmonic filtering is an excellent technique to mitigate these harmonics. Passive harmonic filters are very simple to design and operate as they consist of only inductors and capacitors. This paper discusses the idea of passive harmonic filtering applied to improve power quality by reducing current harmonics in a PV hybrid system.