Abstract
In this paper, a Hybrid MPPT algorithm is proposed to improve the efficiency of photovoltaic (PV) systems under partial shading conditions. Partial shading occurs due to clouds, trees, dirt and dust in PV systems. In partial shading, multiple peaks arise in the PV characteristic curve. The Maximum power point tracking (MPPT) algorithm adjusts the duty cycle of the switch in DC-DC converter for regulating the input voltage at the Maximum power point (MPP) and to provide impedance matching i.e. input resistance of converter equal to equivalent solar resistance of PV system at MPP for the maximum power transfer. The Cuk converters have low switching losses and the highest efficiency. Therefore Cuk converter is chosen as power conditioning circuit to trackmaximum power using Hybrid MPPT technique. The influence of algorithm parameters on system behaviour is investigated and the various advantages and drawbacks of the technique are identified for different weather conditions. Practical results obtained using Solartech SPMO85P PV modules connected to a RL load through Hybrid MPPT controller validates the simulated results.
Highlights
Maximum power is harvested in PV systems by using DC-DC converters as an interface between the PV panelHow to cite this paper: Kanimozhi, K. and Rabi, B.R.M. (2016) Development of Hybrid Maximum power point tracking (MPPT) Algorithm for Maximum Power Harvesting under Partial Shading Conditions
The aim of this work is the practical implementation of Cuk DC-DC converters and Hybrid MPPT tracker to improve the PV system performance under partial shading conditions
The efficiency of Hybrid MPPT algorithm is verified by comparing simulation results with conventional P&O algorithm
Summary
Maximum power is harvested in PV systems by using DC-DC converters as an interface between the PV panelHow to cite this paper: Kanimozhi, K. and Rabi, B.R.M. (2016) Development of Hybrid MPPT Algorithm for Maximum Power Harvesting under Partial Shading Conditions. Maximum power is harvested in PV systems by using DC-DC converters as an interface between the PV panel. How to cite this paper: Kanimozhi, K. and Rabi, B.R.M. (2016) Development of Hybrid MPPT Algorithm for Maximum Power Harvesting under Partial Shading Conditions. A reliable and fast MPPT algorithm can be designed by using the approaches [1], its efficiency is strongly affected by various disturbances. The goal of the MPPT is to match the impedance of load to the optimal impedance of PV module [2]
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