- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
[IEEE 2019 Global LIFI Congress (GLC) - Paris, France (2019.6.12-2019.6.13)] 2019 Global LIFI Congress (GLC) - LiFi Reception from Organic Photovoltaic Modules Subject to Additional DC Illuminations and Shading Effects
摘要： In this paper, we study the performance of organic photovoltaic (OPV) modules as LiFi receivers in two specific configurations. The PV-based LiFi receiver is first exposed to an additional homogeneous light source with different intensity levels and then the influence of partial lighting is studied (shading effect). In both cases, we compare the sensibility and the cutoff frequency of LiFi transmission when the solar cell is operated either in short-circuit mode (i.e. when it is loaded with an active transimpedance amplifier) or in open circuit mode (i.e. when it is terminated with an high impedance passive load). While the OPV module performance decreases in open-circuit mode as a function of the DC illumination level, we observe an improvement of the cutoff frequency in short circuit mode. This result seems very promising for outdoor LiFi transmissions but also for indoor conditions where natural light can disturb LiFi communications. Theoretical explanations involving physical parameters for energy harvesting (carrier mobility, lumped series resistance) are proposed to justify the observed behaviors. Finally, experimental results of shaded solar cells are provided in the two operating modes (open-circuit and short-circuit). We show that sensibility and bandwidth of OPV modules strongly depend on both the shading configuration and the operating mode.
关键词： OPV,shading effects,LiFi,open-circuit mode,organic photovoltaic,short-circuit mode
更新于2025-09-16 10:30:52
-
[IEEE 2019 Fifth International Conference on Science Technology Engineering and Mathematics (ICONSTEM) - Chennai, India (2019.3.14-2019.3.15)] 2019 Fifth International Conference on Science Technology Engineering and Mathematics (ICONSTEM) - Implementation of Enhanced Global Search Particle Swarm Optimization Algorithm for Photovoltaic Systems
摘要： Solar Power is the potential alternative to other sources of energy due to its pure and readily available nature. Solar power wattage is not always wonted or constant. It is due to its unaccustomed multi-peak power voltage characteristics exhibited by a variable swing in environmental conditions and shading effects. Swarm Intelligence has been playing a vital role in optimization problem owing to its intelligibility and directness. This article presents an Inertia Modified Particle Swarm Optimization (IM-PSO) algorithm for photovoltaic power extraction. The proposed method helps to keep track of the maximum power point in lesser effort thereby ensuring proper maximum power. The algorithm is modeled in MATLAB/SIMULINK simulated environment. The results prove it especial to other traditional techniques.
关键词： Optimization,MPPT,Inertia Factor,Partial Shading effects,PSO
更新于2025-09-16 10:30:52
-
Study of Voltage Stability Due to Shading Effects on Photovoltaic Penetration in PKMT Distribution System
摘要： PV output power is firmly influenced by temperature and solar irradiation that fall on the surface of the PV modules. Shading which cross-wising the surface of PV modules is major factor that prevails the degradation of its performance. The shading in PV arrays is caused by the presence of cloud, dust, fog, trees, the shadow near buildings, and so on. As the result of the shading effect, the voltage and current outputs fluctuate which would in turn reducing the efficiency of the PV output. The voltage and current of PV solar cells will drop from partial shading effect experiment which consists of 20%, 40%, 60%, 80%, and 100% shading area. This paper shows the effect of PV system over the voltage stability by variating the shading conditions using simulation by ETAP software 12.6.0.
关键词： Voltage Stability,Photovoltaic,Shading Effects,ETAP software
更新于2025-09-16 10:30:52