Under shading condition, the power–voltage characteristics of the photovoltaic (PV) modules exhibit complexity with multiple numbers of peaks. Existence of multiple peaks leads to additional difficulties in tracking maximum power point (MPP) and shall mar efficiency of PV arrays under shading, if appropriate measures are not taken. It is due to the nonlinear characteristics of PV cell, maximum power can be extracted under particular weather condition. Maximum power point tracking (MPPT) techniques are used to maximize PV array output power continuously, by tracking MPP, the location of which depends on atmospheric temperature and solar insolation. The major drawbacks of traditional MPPT techniques are that they are unable to track global peak under non-uniform irradiance/insolation. Numerous techniques are reported in literature to find MPP in both under uniform insolation and partial shading condition. This paper presents a comprehensive review of various MPPT techniques under uniform and non-uniform irradiances and comparatively evaluates them for their merits and demerits. The review is helpful in selecting appropriate MPPT techniques and adjudges its impact on the given solar PV applications.
Power quality assessment of a solar photovoltaic two-stage grid connected system: Using fuzzy and proportional integral controlled dynamic voltage restorer approach J. Renewable Sustainable Energy 7, 013113 (2015); 10.1063/1.4906980Modeling and global maximum power point tracking for photovoltaic system under partial shading conditions using modified particle swarm optimization algorithm J. Renewable Sustainable Energy 6, 063117 (2014); 10.1063/1.4904436Maximum power point tracking of partial shaded photovoltaic array using an evolutionary algorithm: A particle swarm optimization technique J. Renewable Sustainable Energy 6, 023102 (2014); 10.1063/1.4868025Conventional and global maximum power point tracking techniques in photovoltaic applications: A review
despite of the abundant resource potential and availability of conventional resources like oil and gas in many countries is moving toward the sustainable energy like solar power. Even though these country's has a substantial amount of installed capacity largely based on renewable energy like hydropower, but these resources yield fluctuates greatly during the drought season, forcing to rely on expensive emergency thermal units which again considerably affects the environmental balance but by implementing solar power resources substantial difference can be brought in the environmental circumstances. This paper presents simulation and study of PV cells using the generic model on PSPICE platform. Using PSPICE circuit simulator voltage and current variation can be verified under different a set of condition. Diode based models are used to conduct the studies which are classified on the basis of number of diodes. This paper provides a comparative behavioral study of different models under varying condition of temperature, diode parameter, solar insolation, and etc. This study helps in sketching out the performance evaluation under different circuit topology and control strategy.
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