https://science.sciencemag.org/content/sci/5/110/206.full.pdf

The american psychological association.

Solar Engineering Of Thermal Processes

The Communication program emphasizes theory, research, and application to examine the ways humans communicate, verbally and non-verbally, across a variety of levels and contexts. This is particularly important as communication shapes our ideas and values, gives rise to our politics, consumption and socialization, and helps to define our identities and realities. Its power and potential is inestimable. From the briefest of text messages to the grandest of public declarations, we indeed live within communication and invite you to join us in appreciating its increasing importance in contemporary society. From Twitter and reality television to family relationships and workplace dynamics, communication is about understanding ourselves, our media, our relationships, our culture and how these things connect.

의사 간호사 communication

Optimal sizing of an autonomous photovoltaic/wind/battery/diesel generator microgrid using grasshopper optimization algorithm

As the wireless sensor networks (WSNs) technology has great advancement, small and smart WSN systems now can be used for more complicated and challenging applications. WSNs investigation has primarily believed the use of a convenient and inadequate energy source for empowering the sensors. A sensor becomes useless in the absence of energy and becomes unable to contribute to the utility of the network as a group. Therefore, extensive efforts have been used in finding energy-efficient networking protocols for increasing the life span of WSNs. However, there are promising WSN applications where the sensors are obligatory to work for a long time after their deployments. In these cases, batteries are tough or impractical to replace/recharge. Although, a little amount of power is required for these applications, the useable lifetime of WSNs is decreased by the gradual degradation of the batteries. With the motivation of raising the usable WSNs around us and to value a number of economic and environmental limitations, researchers are looking for new green and theoretically unlimited energy sources. Harvesting of energy from the ambient energy is the basement of these new sources. Energy harvesting devices efficiently and effectively capture, accumulate, store, condition, and manage this energy and supply it in a form that can be used to empower WSNs. This harvested energy can be an alternative energy source for adding-on a principal power source and thus increase the consistency of the whole WSN by preventing the disruption of power. A great deal of research has been reviewed and specific ranges of applications have been found. Though there are challenges to overcome, different researchers have taken different approaches to solve those. In this review, we have emphasized on different scopes, challenges, ideas and actions of energy harvesting for WSNs.

Energizing Wireless Sensor Networks by Energy Harvesting Systems: Scopes, Challenges and Approaches

This paper presents the modeling and simulation of photovoltaic model using MATLAB/Simulink software package. The proposed model is design with a user-friendly icon using Simpower of Simulink block libraries. Taking the effect of irradiance and temperature into consideration, the output current and power characteristic of PV model are simulated using the proposed model. Detailed modeling procedure for the circuit model with numerical values is presented. The simulator is verified by applying the model to 36 W PV modules. The proposed model was found to be better and accurate for any irradiance and temperature variations. The proposed model can be very useful for PV Engineers and expert who require a simple, fast and accurate PV simulator to design their systems.

Modeling and simulation based approach of photovoltaic system in simulink model

Due to world energy crisis and growing demand for energy as the conventional energy sources have become increasingly unable to meet the world demand for the energy. This paper present the design and simulation for maximum power point tracking for photovoltaic system which include a high efficiency dc-dc boost converter with a modified incremental conductance algorithm. The converter is able to draw maximum power from the PV panel for a given solar insolation and temperature by adjusting the duty cycle of the converter. The modelling procedure for the circuit model was presented using MATLAB/Simulink Sim-power. The MPPT system has been tested with solar panel ICO-SPC 100w module under various operating conditions. The obtained results have proven that the MPP is tracked even under sudden change in environmental conditions and loading level

Modelling and simulation of maximum power point tracking of photovoltaic system in Simulink model

This paper presents a control strategy proposed for power maximizing which is a critical mechanism to ensure power track is maximized. Many tracking algorithms have been proposed for this purpose. One of the more commonly used techniques is the incremental conductance method. In this paper, an improved particle swarm optimization- (IPSO-) based MPPT technique for photovoltaic system operating under varying environmental conditions is proposed. The approach of linearly decreasing scheme for weighting factor and cognitive and social parameter is modified. The proposed control scheme can overcome deficiency and accelerate convergence of the IPSO-based MPPT algorithm. The approach is not only capable of tracking the maximum power point under uniform insolation state, but also able to find the maximum power point under fast changing nonuniform insolation conditions. The photovoltaic systematic process with control schemes is created using MATLAB Simulink to verify the effectiveness with several simulations being carried out and then compared with the conventional incremental conductance technique. Lastly, the effectiveness of the intended techniques is proven using real data obtained form previous literature. With the change in insolation and temperature portrait, it produces exceptional MPPT maximization. This shows that optimum performance is achieved using the intended method compared to the typical method.

/pdf/an-improved-pso-based-mppt-control-strategy-for-photovoltaic-fqijdo8gvr.pdf

An Improved PSO-Based MPPT Control Strategy for Photovoltaic Systems

This paper proposes a LABVIEW simulator for photovoltaic (PV) systems. The effect of irradiance and temperature on PV module is very crucial when computing the model PV parameters. Many modeling techniques were used but this approach enables the computation of model parameters at any irradiance and temperature point. It has the ability to simultaneously compute all the PV model parameters. The accuracy of the simulator is verified by applying the model to 36 W PV modules. The performance of the model is tested using a single diode model, a shunt resistance R p and series resistance R s . The proposed model was found to be better and accurate for any irradiance and temperature variations. The proposed model can be very useful for PV Engineers and expert who require a simple, fast and accurate PV simulator to design their systems. DOI: http://dx.doi.org/10.11591/ijpeds.v3i2.2422

https://ijpeds.iaescore.com/index.php/IJPEDS/article/download/4943/5092

Modeling and Simulation of a Solar Photovoltaic System, Its Dynamics and Transient Characteristics in LABVIEW

This paper presents the design and simulation for maximum power point tracking (MPPT) for photovoltaic system, which includes a high-efficiency dc-dc boost converter with a modified incremental conductance algorithm. The converter can draw maximum power from the PV panel for a given solar insolation and temperature by adjusting the duty cycle of the converter. The modelling procedure for the circuit model was presented using MATLAB/Simulink Sim-power. The MPPT system has been tested with solar panel ICO-SPC 100 W module under various operating conditions. The obtained results prove that the proposed MPPT can track even under sudden change in sunlight conditions and loading level.

M. Abdulkadir

Papers

Modeling and simulation based approach of photovoltaic system in simulink model

Modelling and simulation of maximum power point tracking of photovoltaic system in Simulink model

An Improved PSO-Based MPPT Control Strategy for Photovoltaic Systems

Modeling and Simulation of a Solar Photovoltaic System, Its Dynamics and Transient Characteristics in LABVIEW

A new approach of modelling, simulation of mppt forphotovoltaic system in simulink model