1ϕ Grid Tie Solar PV System with MPPT Controller by using Landsman Converter

Abstract

The power generated in the present scenario is not adequate to meet the increase in demand for electricity because of the huge population and industrialization. In order to overcome the impact, an alternative source a like stand-alone solar PV system or single-phase grid-tie system must be implemented. The development of alternative sources of energy like solar, wind, tidal, and geothermal will helps in stand-alone electrical system. These sources are freely available in nature but they are intermittent. Because of intermittent, the output electrical power is also intermittent. This may result in poor efficiency of the system. In order to increase the efficacy of alternative system, concept called Maximum Power Point Tracking (MPPT) is introduced. The MPPT has the power electronic components which will plays a prominent part in increasing the efficiency of the solar PV system. DC-DC converts are used in the MPPT converter module which will give the constant voltage output that is madly needed. Converters like Buck-Boost converter, Zeta converter, and SEPIC converts are more widely used in MPP tracking. But there is an inverse polarity of output current and discontinuity in the current output of the above converter. Also in the Zeta converter, there is a ripple in the output current which results in power quality issues. To overcome these disadvantages, the Landsman converter is introduced which will provide good voltage control and power factor. In a solar PV system, under partial shading conditions also this converter will provide a constant output voltage and improved efficiency. Single-stage DC voltage control and the single sensed entity are used with DC link capacitor for better voltage regulation.