Survey of PWM techniques for solar inverter

Usage of electricity is rapidly increasing. As it finds it's application in every field of human development. The primary and the most prevalent source of electricity is the fossil fuel which is notoriously known source of the global warming. Conversion of solar energy into electrical energy is one of the best solution to reduce fossil fuel consumption, thus keeping check on the global warming. Efficient use is the key factor in the utilization of this never ending energy source. Devices that could harness and convert this abundantly available energy into a usable form will certainly and effectively address the problems of energy crisis. Solar Inverter can be the one of such devices. This report reviews the fundamental scheme that drives any inverter may it be conventional or solar. It is the generation of sinusoidal waveform at the output of an inverter. This is achieved by adapting a PWM (Pulse Width Modulation) technique. This survey paper presents some of the efficient and prevailing PWM techniques which will facilitate generation of pure sinusoidal waveform at the output.