Abstract:

In recent years demand for electrical energy is increasing at a rapid pace. In such contrast standalone systems are gaining importance. In a country like India where most of the people are dependent on agriculture sector, water is the prime source of demand. Due to the irregular monsoon seasons and non-availability of water from canals, most of the farmers are dependent on ground water for crop fertility. These further increases demand on grid. To make the grid burden free a standalone system consisting of a boost converter coupled to a multilevel inverter is proposed for running agriculture motor. The proposed system consists of a transformer less DC-DC Converter to obtain larger conversion gain and a 9-level inverter to get AC voltage of power frequency. The main advantage of a transformer less DC-DC converter is high efficiency, less stress over switches, faster transient response, and better reliability. A diode clamped multi-level inverter is used for production 9 level stepped sine wave. The proposed scheme is simulated with the help of MATLAB R2018b and the harmonic analysis is performed for different values of duty ratios of the DC-DC Converter.

Description:

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