scholarly journals Series Resistance Change by Partial Shading in a-Si Thin Film Photovoltaic(PV) Module

2010 ◽  
Vol 23 (11) ◽  
pp. 901-905
Author(s):  
Jun-Oh Shin ◽  
Tae-Hee Jung ◽  
Tae-Bum Kim ◽  
Sung-Chul Woo ◽  
Na-Ri Yun ◽  
...  
Keyword(s):  
Thin Film ◽  
Series Resistance ◽  
Resistance Change ◽  
Partial Shading ◽  
Pv Module ◽  
Si Thin Film

scholarly journals A new simplified method for efficient extraction of solar cells and modules parameters from datasheet information

2021 ◽  
Author(s):  
Fahmi F. Muhammadsharif
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Series Resistance ◽  
Peak Position ◽  
Saturation Current ◽  
Simulation Design ◽  
Shunt Resistance ◽  
Simplified Method ◽  
Efficient Extraction ◽  
Si Thin Film

Abstract An accurate and straightforward estimation of solar cells and modules parameters from the manufacturer’s datasheet is essential for the performance assessment, simulation, design, and quality control. In this work, a simple and efficient technique is reported to extract the parameters of solar cells and modules, namely ideality factor (n), series resistance (Rs), shunt resistance (Rsh), photocurrent (Iph) and saturation current (Io), from datasheet information. The method is based on defining the peak position of the function \(f\left(n,{R}_{sh}\right)=n\left({R}_{sh\_max}-{R}_{sh}\right)\), at which the five parameters are extracted. It was validated on four different technologies of solar cells and modules, including Poly-Si, Mono-Si, thin film and multijunction. Results showed that a simple and efficient extraction of the parameters can be realized by using this technique compared to that of the reported methods in literature.

Photovoltaic Systems in University of Miyazaki

2013 ◽  
Vol 372 ◽  
pp. 555-558
Author(s):  
Kenji Yoshino ◽  
Kensuke Nishioka ◽  
Atsuhiko Fukuyama ◽  
Hidetoshi Suzuki ◽  
Masahisa Otsubo
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Photovoltaic Systems ◽  
Pv Module ◽  
The University ◽  
Module Systems ◽  
Si Thin Film

We organized a project of solar cells in University of Miyazaki in order to develop the technologies for solar cells. We have four kinds PV module systems, such as hybrid Si Thin film (1 kW), Poly-Si (50 kW), CIS (100 kW) and CPV (14 kW×2). Their total is 179 kW. These take appoximately 5% of total electricity of the university.

scholarly journals A Simple Mismatch Mitigating Partial Power Processing Converter for Solar PV Modules

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2308
Author(s):  
Kamran Ali Khan Niazi ◽  
Yongheng Yang ◽  
Tamas Kerekes ◽  
Dezso Sera
Keyword(s):  
Experimental Tests ◽  
Energy Yield ◽  
Power Electronic ◽  
Solar Pv ◽  
Partial Shading ◽  
Loss Analysis ◽  
Pv Systems ◽  
Pv Module ◽  
Pv Modules ◽  
In Series

Partial shading affects the energy harvested from photovoltaic (PV) modules, leading to a mismatch in PV systems and causing energy losses. For this purpose, differential power processing (DPP) converters are the emerging power electronic-based topologies used to address the mismatch issues. Normally, PV modules are connected in series and DPP converters are used to extract the power from these PV modules by only processing the fraction of power called mismatched power. In this work, a switched-capacitor-inductor (SCL)-based DPP converter is presented, which mitigates the non-ideal conditions in solar PV systems. A proposed SCL-based DPP technique utilizes a simple control strategy to extract the maximum power from the partially shaded PV modules by only processing a fraction of the power. Furthermore, an operational principle and loss analysis for the proposed converter is presented. The proposed topology is examined and compared with the traditional bypass diode technique through simulations and experimental tests. The efficiency of the proposed DPP is validated by the experiment and simulation. The results demonstrate the performance in terms of higher energy yield without bypassing the low-producing PV module by using a simple control. The results indicate that achieved efficiency is higher than 98% under severe mismatch (higher than 50%).

Strong visible PL from the nc-Si thin film by Ni silicide mediated crystallization

2003 ◽  
Vol 16 (3-4) ◽  
pp. 400-403
Author(s):  
Do Young Kim ◽  
Ji Sim Jung ◽  
Young Rae Jang ◽  
Kun Ho Yoo ◽  
Jin Jang
Keyword(s):  
Thin Film ◽  
Si Thin Film

Molecular Dynamics Studies of Surface Nucleation and Crystal Growth of Si on SiO2 Substrates

2005 ◽  
Vol 899 ◽  
Author(s):  
Byoung-Min Lee ◽  
Hong Koo Baik ◽  
Takahide Kuranaga ◽  
Shinji Munetoh ◽  
Teruaki Motooka
Keyword(s):  
Thin Film ◽  
Molecular Dynamics ◽  
Crystal Growth ◽  
Surface Energy ◽  
Md Simulations ◽  
Lower Surface ◽  
Surface Nucleation ◽  
Lower Surface Energy ◽  
Potential Parameters ◽  
Si Thin Film

AbstractMolecular dynamics (MD) simulations of atomistic processes of nucleation and crystal growth of silicon (Si) on SiO2 substrate have been performed using the Tersoff potential based on a combination of Langevin and Newton equations. A new set of potential parameters was used to calculate the interatomic forces of Si and oxygen (O) atoms. It was found that the (111) plane of the Si nuclei formed at the surface was predominantly parallel to the surface of MD cell. The values surface energy for (100), (110), and (111) planes of Si at 77 K were calculated to be 2.27, 1.52, and 1.20 J/m2, respectively. This result suggests that, the nucleation leads to a preferred (111) orientation in the poly-Si thin film at the surface, driven by the lower surface energy.

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