scholarly journals Effects of Using 24 watt Twisted Fluorescent Lamp, 13 watt Led Bulb and 30 watt Led T8 on Inverter Current, Photovoltaic Panel and Charging Current of Solar System

2021 ◽  
Vol 2 (1) ◽  
pp. 11-16
Author(s):  
Annuar Baharuddin ◽  
Abdul Hamid Alias ◽  
Anuar Shaari
Keyword(s):  
Solar System ◽  
Direct Current ◽  
Energy Savings ◽  
Fluorescent Lamp ◽  
Good Efficiency ◽  
Photovoltaic Panel ◽  
Solar Systems ◽  
Point Tracking ◽  
Charging Current ◽  
Electricity Saving

An alternative to the use of solar systems is an electricity saving activity that can provide a profit if the load used is in accordance with the level of capacity of the system. Load selection in solar systems is very important in ensuring the stability of the system itself. Energy from sunlight is the main source of direct current power generation but it is subject to the capabilities of the Maximum Power Point Tracking (MPPT) solar charger controller used. The selection of the appropriate load will provide good efficiency as well as more efficient energy savings. In this paper,13Watt LED bulb, 24Watt Twisted fluorescent lamp and 30Watt T8 LED lamp are tested in an experimental study to see the effect of their use on the inverter current, the current flowing through the photovoltaic panel and the current used to charge a battery in the solar system. These data will be used to make comparisons with the energy savings generated by this solar system to provide longer time to use. The brightness of the lamp is also compared using digital Lux meters. The results of this study have shown that the use of 13Watt LEDs is more economical in terms of direct current (Dc) power and contributes to brighter lighting than the 24Watt twisted fluorescent lamp and 30Watt T8 LED lamp used.

scholarly journals APPLICATION OF TRANSPARENT INSULATION MATERIALS TO BUILDINGS HEATING IN PASSIVE SOLAR SYSTEMS

2002 ◽  
Vol 8 (4) ◽  
pp. 286-290
Author(s):  
Halina Koczyk ◽  
Andrzej Górka
Keyword(s):  
Numerical Model ◽  
Solar System ◽  
Energy Savings ◽  
Climatic Conditions ◽  
Numerical Calculations ◽  
Insulation Material ◽  
Solar Systems ◽  
Thermal Fields ◽  
Heating Installation ◽  
Passive Solar

The aim of this paper is to present a numerical model, based on the finite difference method and able to describe the heat transfer in a room with indirect passive solar system in form of transparent insulation material (TIM) wall. Results of numerical calculations of thermal fields in TIM wall, in room with passive solar system, under climatic conditions of typical meteorological year for Poznan, are presented. Also the estimation of energy savings for selected rooms with TIM wall is given. Construction of a numerical model of building includes calculation of distribution of temperatures in all walls forming the enclosure, composition of system of energy balance equations for nodes representative of rooms and its solution. In numerical calculations of the thermal states of rooms with transparent walls, an analysis of respective components of thermal balance there has been conducted, in conjunction with required radiator heating power of automated heating installation—coacting with passive solar systems (PSS), as well as variability of η in the comparative year including months from September to April.

scholarly journals A Novel Extension Decision-Making Method for Selecting Solar Power Systems

2013 ◽  
Vol 2013 ◽  
pp. 1-6
Author(s):  
Meng-Hui Wang
Keyword(s):  
Decision Making ◽  
Solar System ◽  
Power Systems ◽  
Power System ◽  
Solar Power ◽  
Important Task ◽  
Extension Theory ◽  
Solar Systems ◽  
Load Demand ◽  
Generating Capacity

Due to the complex parameters of a solar power system, the designer not only must think about the load demand but also needs to consider the price, weight, and annual power generating capacity (APGC) and maximum power of the solar system. It is an important task to find the optimal solar power system with many parameters. Therefore, this paper presents a novel decision-making method based on the extension theory; we call it extension decision-making method (EDMM). Using the EDMM can make it quick to select the optimal solar power system. The paper proposed this method not only to provide a useful estimated tool for the solar system engineers but also to supply the important reference with the installation of solar systems to the consumer.

scholarly journals Implementation of Algorithm on MPPT

2021 ◽  
Vol 9 (VI) ◽  
pp. 5473-5478
Author(s):  
Bharat Khandelwal
Keyword(s):  
Tracking System ◽  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Maximum Efficiency ◽  
Maximum Power Point ◽  
Good Efficiency ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Incremental Conductance ◽  
Power Point

Solar energy is a potential energy source in India. A photovoltaic is a efficient way to cure the energy in a huge amount and keep to gather that kind of energy for future, and the PV must have good efficiency. The maximum power point tracking (MPPT) is a process that tracks one maximum power point from array input, in which the ratio varies between the voltage and current delivered to get the most power it can. Several algorithms have been developed for extracting maximum power. To increase its efficiency many MPPT techniques are used. Incremental conductance is one of the important techniques in this system and because of its higher steady-state accuracy and environmental adaptability it is a widely implemented tracked control strategy. This research was aimed to explore the performance of a maximum power point tracking system that implements the Incremental Conductance (IC) method. The IC algorithm was designed to control the duty cycle of the Buck-Boost converter and to ensure the MPPT work at its maximum efficiency. From the simulation, the IC method shows better performance and also has a lower oscillation.

scholarly journals Battery Charging Application with Thermoelectric Generators as Energy Harvesters

2019 ◽  
Vol 3 (1) ◽  
pp. 248
Author(s):  
Zakariya M. Dalala ◽  
Zaid S. Hamdan ◽  
Hussein Al-Taani ◽  
Mohammad Al-Addous ◽  
Aiman Albatayneh
Keyword(s):  
Control Algorithm ◽  
Thermoelectric Generator ◽  
Boost Converter ◽  
Constant Current ◽  
Battery Charger ◽  
Power Matching ◽  
Point Tracking ◽  
Battery Chargers ◽  
Charging Current ◽  
Power Point

This paper discusses and presents the implementation of a boost converter as power electronic interface to be used with the thermoelectric generator (TEG). The common application for such system is the battery charger. The boundary conditions for battery chargers include the charging current and battery voltage limits which have to be respected throughout the charging process, while the maximization of the power generated from the TEG is a global target that is desired to be met as much as possible. Coordinated control algorithm that collectively combines these constraints is the main focus of this work. Novel global control algorithm is proposed and verified in this paper with detailed analysis that shows the effectiveness of the proposed algorithm. Dual control loops for the voltage and current of the boost converter will be designed and analyzed to satisfy the source and load demands. Maximum power point tracking (MPPT) mode, power matching mode and voltage stabilization mode will be integrated in the control algorithm of the battery charger. This paper puts a schematic design for a system that harvests energy from a thermoelectric generator bank of a TEG1-12611-6.0 TEG modules in order to charge a battery bank of Samsung ICR18650 Batteries using constant current (CC) and constant voltage (CV) charging profiles.

scholarly journals Turning solar systems into extrasolar planetary systems in stellar clusters

2010 ◽  
Vol 6 (S276) ◽  
pp. 304-307
Author(s):  
Melvyn B. Davies
Keyword(s):  
Solar System ◽  
Planetary System ◽  
Large Fraction ◽  
Planetary Systems ◽  
Single Star ◽  
Solar Systems ◽  
Close Encounters ◽  
Eccentric Orbits ◽  
The Galaxy ◽  
Hostile Environments

AbstractMany stars are formed in some form of cluster or association. These environments can have a much higher number density of stars than the field of the galaxy. Such crowded places are hostile environments: a large fraction of initially single stars will undergo close encounters with other stars or exchange into binaries. We describe how such close encounters and exchange encounters will affect the properties of a planetary system around a single star. We define singletons as single stars which have never suffered close encounters with other stars or spent time within a binary system. It may be that planetary systems similar to our own solar system can only survive around singletons. Close encounters or the presence of a stellar companion will perturb the planetary system, leading to strong planet-planet interactions, often leaving planets on tighter and more eccentric orbits. Thus, planetary systems which initially resembled our own solar system may later more closely resemble the observed extrasolar planetary systems.

scholarly journals A Standard-Based Method to Simulate the Behavior of Thermal Solar Systems with a Stratified Storage Tank

Energies ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 266 ◽  
Author(s):  
Edoardo Alessio Piana ◽  
Benedetta Grassi ◽  
Laurent Socal
Keyword(s):  
Solar System ◽  
Solar Energy ◽  
Storage Tank ◽  
Hot Water ◽  
Design Parameters ◽  
Fluid Temperature ◽  
Forced Circulation ◽  
Solar Systems ◽  
Solar Field ◽  
The Impact

Thermal solar systems are interesting solutions to reduce CO 2 emissions and gradually promote the use of renewable sources. However, sizing such systems and analysing their behavior are still challenging issues, especially for the trade-off between useful solar energy maximization and stagnation risk minimization. The new EPB (Energy Performance of Buildings) standard EN 15316-4-3:2017 offers several methods to evaluate the performance of a forced circulation solar system. One of them is a dynamic hourly method that must be used together with EN 15316-5:2017 for the simulation of the stratified storage tank connected with the solar loop. In this work, such dynamic hourly method is extended to provide more realistic predictions. In particular, modeling of the pump operation due to solar fluid temperature exceeding a set threshold, or due to low temperature differential between solar field and storage tank, is introduced as an on–off control. The implemented code is applied to a case study of solar system for the preparation of domestic hot water and the impact of different design parameters is evaluated. The model predicts a higher risk of overtemperature lock-out or stagnation when the solar field surface is increased, the storage volume is reduced and water consumption is set to zero to simulate summer vacation periods. Finally, a simple modulating control with a time step of a few seconds to a few minutes is introduced, quantitatively showing the resulting benefits in terms of useful solar energy increase, back-up operation savings and reduced auxiliary energy use.

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