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The aim of this paper is to describe a SCADA tool for an intelligent microgrid. This application provides control over a smart microgrid that contains inverters, batteries and generators with power meters. In this system, the energy is generated by solar panels, a geothermal generator, a biomass generator and stored in batteries. The data is collected and represented on a PC Interface. The communication...
This paper presents the dynamic modeling of a Solid Oxid Fuel Cell (SOFC) and the device necessary to perform its grid connection. Since there is a voltage drop with increasing load, the DC/DC Converter boosts the cell's output voltage and keeps it regulated. The DC/AC inverter interfaces the DC output of the converter side with the AC grid side. In order to control the injection of active and reactive...
3G means distributed generation, micro grid, and smart grid has become a popular topic and is developing rapidly due to energy shortage. The energy requirement in the world is ever increasing due to the increase in population and their standard of living. There exists a gap between power generation and power demand. The energy demand imposes several challenges on the conventional fossil fuels like...
This paper is mainly addressing the design and analysis of a hybrid Solar and Biomass System for rural electrification in a remote area in Bangladesh by Decentralized Distributed Generation & Rural Power Distribution Management. Energy is crucial input in the process of economic, social and industrial development. Energy plays a vital role in our daily life. But the conventional source of energy...
When a greatly varying load is connected to a weak power system, stability of the system becomes a problem. In these days, because the use of renewable energy is accelerating, not only the loads but also the distributed generators can be critical factors in destabilizing the system. A virtual synchronous generator (VSG) control allows a static inverter to behave similar to a synchronous generator...
The Hybrid Energy Module (HEM) is a promising configuration for a distributed energy resource (DER) that combines both thermal and electrical energy storage with a micro-source that is capable of producing a significant amount of heat in addition to electricity (e.g., fuel cells, natural gas gen-set). The availability of the energy storage components makes it possible to utilize a larger fraction...
Power electronics applications to electric power processing are playing an increasingly indispensable role in the power quality and power reliability enhancement, especially in view of the growing importance of distributed (especially renewable) energy sources' contribution to electric power generation. Grid-interactive distributed generation systems have huge potential to significantly enhance the...
This paper presents an overview of the minimal complexity level requirement for modeling generic grid-interactive inverter to conduct power flow, protection, stability and power quality studies. For each functional, control or protection block of the inverter system, it describes the appropriate level of complexity needed to perform each of the power system studies. This work serves as a foundation...
Electric Spring, a new smart grid technology, has earlier been used for providing voltage and power stability in a weakly regulated/stand-alone renewable energy source powered grid. It has been proposed as a demand side management technique to provide voltage and power regulation. Buildings provide a great avenue to implement electric spring effectively. In this paper, a new control scheme is presented...
Adding photovoltaic (PV) energy sources to a DC Microgrid can be complicated and costly. The PV-module's output does not match the high voltage DC (HVDC) bus to which it is attached so PV-modules must be connected in a series string fashion in order to reach the required level. This means all PV-modules must be identical in electrical characteristics, must be connected in identical string lengths,...
In this paper, authors propose an advanced photovoltaic system based on the 15-Level PUC inverter. The proposed inverter has the advantage to operate with a single PV array while generating fifteen voltage levels. Even it is constituted from only eight switches and two capacitors; it can nevertheless offer a fifteen-level output voltage. In order to extract the maximum power from the PV panel, authors...
This paper presents energy efficiency analysis for a medium office building and at the same time remodels the building in order to develop the energy efficiency. The author of this work will also integrate a renewable energy system with this office building to contemplate the effect of the system on energy demand and cost.
In an isolated and rural locations where the energy is derived from renewable sources, the load will suffer from large fluctuations due to the unpredictable nature of the underlying phenomena (wind or solar). This paper presents the implementation of practical control for standalone renewable energy source able to feed an isolated load with regulated voltage and satisfactory energy quality in remote...
This paper presents a single phase photovoltaic inverter topology with battery backup for grid connected pv systems with a novel control scheme. The battery is used as a backup source in case solar power is absent. The power flow through the battery is controlled using a bidirectional converter so that the optimum use of the battery is ensured. The DC-DC converter controls the DC link voltage so as...
Significant developments in the electrical systems are strongly evolving towards the energy saving solutions and the installation of local renewable power sources. Port facilities have to organize their electric power systems as a unique loads area constituting a microgrid. A common renewable energy power system, organized for all the customers of a port, can be sized and operated more efficiently...
The inverters are the major electronic conversion in the application of renewable energy utilization, variable motor drives and uninterruptible power supply. Most of the inverters utilize Pulse Width Modulation (PWM) technology which has a lot of protection and control circuits. The Sinusoidal based PWM (SPWM) technique has been used to design a single phase inverter in Field Programmable Gate Array...
In this paper, the mathematical analysis of proton exchange membrane fuel cell (PEMFC) is discussed, which is helpful to investigate the behavior and modeling of PEMFC. For the investigation of parametric effects, some of the important operating parameters such as temperature, reactants flow pressures (hydrogen and oxygen), membrane internal resistance etc. are considered. The parametric effects of...
Solar power is considered a very promising source for electric power generation. The abundance of sunlight over a large area of the earth surface gives rise to several applications of photovoltaic systems. Electricity can be generated from sunlight either directly by using the photovoltaic effect, or by using energy from the sun to heat up a working fluid that can be used to power up generators. These...
Renewable energy sources entail the power electronics inverters are the orbit of research objectives for optimum operation. Two commonly used inverters exist; the current source inverters (CSI) and the voltage source inverters (VSI). The first one supports only the boost capability and the other supports the buck capability, but due to the high variation of the output voltage of these renewable energy...
In this paper, a modified single-phase grid connected current source inverter is proposed for photovoltaic system application. The proposed converter is able to connect low voltage photovoltaic panels to grid without using transformer or extra dc-dc boost converter. Also, a current reference tracking based control method is proposed which tracks sinusoidal reference current and injects sinusoidal...
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