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A photovoltaic stand-alone lighting system with polymeric-silica-gel-electrolyte-based substrate-integrated lead-carbon hybrid ultracapacitors
摘要： Harnessing solar electricity generated through photovoltaic cells with lead-acid batteries remains the most compelling option at present. But lead-acid batteries have encountered problems in photovoltaic installations, mainly due to their premature failure. To circumvent the aforesaid problem, a new technology referred to as substrate-integrated lead-carbon hybrid ultracapacitor with polymeric-silica-gel electrolyte, is developed in-house and tested for solar-electricity storage for a lighting application. The high-throughput performance tests for the device are conducted at laboratory scale and compatibility of the device for photovoltaic application is evaluated. In doing so, the device is installed with a photovoltaic panel for field test and data are collected from August 2012 through July 2013. The year round field-test data analyzed in the light of the available global-horizontal-irradiance data show attractive performance for the device. It is noteworthy that, unlike lead-acid batteries, seasonal variations in solar radiance exhibit little effect on the performance of the device.
关键词： Polymeric silica gel electrolyte,Cycle-life,Photovoltaic application,Substrate-integrated lead-carbon hybrid ultracapacitor,Field testing
更新于2025-09-16 10:30:52
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Design of a Photovoltaic System with Ultracapacitor Energy Buffer
摘要： Global concerns over the damage caused to the environment by fossil fuels, as well as the instability of oil prices, has led to an increase interest in alternate electric power generation from renewable sources such as the sun, wind and geothermal energy. Solar energy is produced by solar panels which are made of materials having the capacity to create a flow of electric carriers when exposed to the solar irradiance. The efficiency of these panels depends on the sun light, and they cannot work at their maximum power point independently, hence, requiring Maximum Power Point Tracker (MPPT). This MPPT permits to compensate the changes in irradiance and temperature conditions and variations in load demands which cause power imbalances. As such, a photovoltaic system with supercapacitor energy buffer is designed using Psim software. The system consists of a photovoltaic array, a MPPT, a supercapacitor, and a charge controller which is to effectively balance and regulate power in the system.
关键词： Charge controller,Psim,Solar panel,Maximum Power Point Tracking,Buck-Boost converter,Ultracapacitor
更新于2025-09-12 10:27:22
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[IEEE 2018 International Conference On Advances in Communication and Computing Technology (ICACCT) - Sangamner, India (2018.2.8-2018.2.9)] 2018 International Conference On Advances in Communication and Computing Technology (ICACCT) - Optimal Sizing of Battery-Ultracapacitor Hybrid Energy Storage Device in a Standalone Photovoltaic System
摘要： In standalone renewable energy systems, it is most essential to deploy energy storage devices to compensate for the intermittent and random output power generation. Since the last few years, hybrid energy storage devices (HESDs) composed of two or more energy storage technologies are being adopted in these power systems. In this paper, a standalone photovoltaic system with battery-ultracapacitor HESD has been considered for case study. A suitable problem formulation with the necessary objective function and constraints has been developed for the system. A variant of one of the popular meta-heuristic techniques, particle swarm optimization (PSO) has been used to address the optimization problem. The simulation results along with the convergence characteristics of the algorithm have been presented. It is observed that the proposed technique can produce comparable results.
关键词： Battery,standalone photovoltaic system,ultracapacitor,hybrid energy storage,particle swarm optimization (PSO)
更新于2025-09-09 09:28:46