Effects of Harmonics in Power Systems and Improvements to Increase Power Quality

Abstract

A circuit converting d.c. power to a.c. power at desired voltage and frequency is called an inverter. The output voltage waveform of ideal inverter should be sine wave in nature. However the waveform of practical inverter is non-sinusoidal (or rectangular) and contains harmonics which reduces the power quality a lot. Thus the principle of the paper is to know the effects of harmonics in power system and improvements to increase the power quality using a technique is explained in detail.