Abstract
The proposed research suggests an improvised performance which is efficient and a reliable converter as a reasonable solar photo Voltaic (PV) approach. The proposed research helps in elevating the performance levels so that power extraction is maximized from the respective PV arrays specifically during the case of limited shading. In order to track the maximum amount of power from every solar PV string, connection of DC-DC converters is done amid the solar PV strings. By doing so, maximum power output can be ensured by the operation of each string irrespective of the occurrence of variation in the solar radiation amongst diverse strings. Usually, the DC-DC converter that would be employed for this purpose would process the string’s power completely. This Full Power Processing (FPP) architecture gives rise to extreme losses of conversion. Hence, the suggested work propound a Partial Power Processing (PPP) that processed a part of the total system power, while the rest of the power is straight away delivered to the output side, thus provides high conversion efficiency when compared to the existing DC-DC FPP converters. An input parallel output series structure having a novel Non-Isolated Partial Power Processing topology (NIPPP) is recommended and the operation’s details are elucidated depending on the operating principle. For the purpose of evaluating the performance of the converter, Matlab Simulink environmental platform are carried out. The closed loop prototype experimental approach is also carried out with the improvement of efficiency compared to conventional it appears in efficient manner.
Highlights
By means of incessant cost reduction as well as technological progress development, the photovoltaic (PV) mounted globally has caused an inclination towards exponential growth in the generation capacity
With respect to Isolated partial power processing (IPPP) that has been categorized as the two series module full bridge Converter [6], LLC Resonant converter [7] as well as the full bridge with partial power processing which may be deployed to fulfill the purpose of constructing high-power-density converters
Similar result in the loss of the merits of handling partial power if a flipped buck converter or a regular buck-boost converter is used to realize the partial power process II in the Input Series Output Parallel (ISOP) structure shown in Fig. 2(c), they are equivalent to a full power processing (FPP) [10,11,12,13,14,15,16,17,18,19,20]
Summary
By means of incessant cost reduction as well as technological progress development, the photovoltaic (PV) mounted globally has caused an inclination towards exponential growth in the generation capacity. Supposing the shaded substrings are not anymore capable of generation of a string current, the parallel connected bypass diodes begin the conduction in order to circumvent the shaded substrings, as denoted, resulting in a considerable mismatch in the operational voltage [1]. It is the Central converter which has the ability to extract the overall characteristic’s peak pertaining to the PV array that might be considered to be IMPLEMENTATION OF NEW HIGH EFFICIENT INPUT PARALLEL OUTPUT SERIES PARTIAL POWER DC-DC CONVERTER FOR SOLAR PHOTOVOLTAIC PARTIAL SHADING CONDITIONS.
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