ADBU Journal of Electrical and Electronics Engineering (AJEEE)
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Design of DC Microgrid Based on Photovoltaic Power Supply System
Get PDFThis paper describes the possibilities of the application of DC Microgrids to solve the energy problem in the country. DC Microgrids open a gateway for integration of solar energy which is efficient and cleaner way of renewable energy generation, which can be integrated into the power distribution network. DC microgrid is an intelligent mix of smart grid and renewable source with increase in the efficiency of energy. Therefore, very little energy is wasted during distribution and transmission. It has several other advantages, which include - reduction in transmission losses, improvement in power quality & reliability, reduction in emissions and even it is cost effective. The circuit for solar power availability sensing and switching to battery supply is done on hardware. Design of DC microgrid from the solar energy is done in MATLAB/SIMULINK. The most important characteristic is that it provides a possibility for electrification of remote villages which are far from the reach of the conventional grid
Design of Horizontal Axis Micro Wind Turbine for Low Wind Speed Areas
Get PDFMicro wind turbines play an important role in becoming the alternative technology in the generation of electricity because of the increase in fossil fuel prices and the increase in demand for renewable energy sources. Similarly, Wind energy is becoming one of the best renewable sources of energy for generation of electricity because of the fact that wind is a clean and unbounded source of renewable energy. This paper presents the ideas of designing a horizontal axis small-sized wind turbine or horizontal axis micro wind turbine for low wind speed areas to produce electricity. A small-sized wind turbine or micro wind turbine is a type of turbine that converts the kinetic energy of wind into electrical energy and it is used to generate power for small power needs. It can also be used in many applications like homes, villages, and so on, requiring a very low cost for installation and maintenance
A Review on Stability Improvement of Wind Farm using FACTS Device
Get PDFThis paper represents a review on Stability improvement of wind farm using the Flexible AC Transmission System (FACTS) device. FACTS devices are used to increase the transient stability on the presence of faults and the integration of renewable sources, like wind energy. Due to continuously varying wind speed and also due to fault the active and reactive power along with terminal voltage fluctuates continuously. By connecting Static Synchronous Compensator (STATCOM) into the grid, the active power, reactive power, and terminal voltage are maintained constant and also help to improve the transient stability of the system
A High Voltage Gain Boost Converter: Concept of DC Power Transfer Using Mutual Inductors
Get PDFA high voltage boost converter is being prototyped in an artificial software-based environment of MATLAB/ SIMULINK and identifies the practical conditions of the converter. A direct current (DC) input voltage is being boosted to a higher magnitude by multiplying a gain factor in a dynamic process of DC power transfer by cascading three mutual inductors in a single core. Input voltage is being switched by primary IGBT switches creating simultaneous charging and discharging of primary inductor, hence induces identical voltage in two secondary inductors. Inductors are charged and power is transferred to a parallel capacitor and finally to the resistive load in accurate control of duty cycles
Stability Improvement of Power System due to Wind Farm and Fault using FACTS Devices
Get PDFWind energy is gaining the most interest among a variety of renewable energy resources, but the disadvantage is that wind power generation is intermittent, depending on weather conditions. FACTS devices are used to increase the transient stability on the presence of faults and the integration of renewable sources, like wind energy. Due to continuously varying wind speed components and also due to fault the active and reactive power along with terminal voltage fluctuates continuously. STATCOM and UPFC are two important FACTS devices; provide the desired reactive-power generation and absorption, entirely using electronic processing of the voltage and current waveforms in a voltage source converter (VSC). By connecting STATCOM and UPFC into the lines, the active power, reactive power, and terminal voltage is maintained constant and it also helps to improve the transient stability of the system. STATCOM can control voltage magnitude and, to a small extent, the phase angle in a very short time and UPFC can control voltage magnitude as well as phase angle and therefore, can improve the system performance. In this paper, improvement of transient stability in wind farm under fault have been studied using STATCOM and UPFC in MATLAB SIMULINK software
Centralized Air Pollution Detection and Monitoring: A Review
Get PDFAir pollution has become a major concern over the last quarter century and therefore mitigation of poor air quality for health and environmental reasons has been a primary focus for local governments. Industrialization and increasing number of vehicles are the primary source of pollution. There is ever rising need for continuous monitoring of air quality. A lot of technologies have introduced for measuring the air pollution. This paper presents a comparative study of the available technologies. Comparisons have been done based on measured pollutants, sensitivity, range, implementation cost, level of complexity etc., which are provided in tabular form for easy comparison. Paper also includes a proposed model which is an idea to implement the same as a real time project for air pollution detection and monitoring using microcontroller and Wi-Fi module
Comparative Analysis of Different Control Schemes for DC-DC Converter
Get PDFDC-DC converters are some power electronic circuits that convert the DC voltage from one level to another. They have a very large area of applications ranging from computing to communication. They are widely used in appliance control transportations, and high-power transmission. Its increasing demand is based on its capability of electrical energy conversion. The basic topology of DC-DC converter are Buck converter and Boost converter, other topologies are derived from this two-basic topology. In this paper mathematical modelling of both Buck and Boost converters has been done. Some of the control schemes are summarized in this paper. Current mode control (CMC), PID, control including their advantages and disadvantages are highlighted in this paper
High Voltage Boost Converters: A Review on Different Methodologies and Topologies
Get PDFPower converters are a fundamental element in the industries, micro-grids and households appliances providing all the necessary power regulation increasing the flexibility of the voltage, current, power, and phase. In this review a number of boost converters are studied, responsible for converting a low direct current voltage to a higher magnitude using a number of different methods including coupled inductors, series combination of a capacitor and two parallel inductors and an inductor discharging to two series connected capacitors in a transfer of power. The converters encounter two major practical issues sudden rise in di/dt and dv/dt that drastically reduces the efficiency and increases power loss in passive elements and stress in active switches
Potential of Archimedes Screw Turbine in Rural India Electrification: A Review
No full textWith the growing population of India, the demand for energy consumption is increasing. For the overall development of a region, especially remote areas, electricity is of prime importance. Production of electricity in large scale can further lead to various effects like environmental pollution, climate change and it is also costly. Thus the need for a socio-economic energy conversion to electricity is of prime importance for a sustainable development. India has a huge potential in the Hydro to generate 2,50,000 MW. An Archimedes Screw Turbine that was earlier used as a pump can give a very good solution in harnessing water potential. It rotates as water flows through it, rotating the generator's prime mover connected to it. Archimedes Screw turbines operate at a low head of 0.8m to 10 m and relatively lower flow rate than the other turbines and more cost-effective and are highly efficient. The AST is quite a new form of electricity generation practice which has been implemented in different countries along with India. Thus the electrification scenario in rural areas can be improved specially where there is a continuous flow of a river or canal by the installation of the low-cost socio-economic AST
A Review On Light Trapping Capacities of Different Photovoltaic Cells
Get PDFAs human beings mostly depend on fossil fuels for all of their daily energy usages. But due to the exponential increase in the graph of the price of the fossil fuels, as well as the gradually decreasing graph of their availability on a large scale, makes the people to divert their attention towards a new source of sustainable energy which could fulfil their daily energy needs reliably, efficiently as well as cost-effectively. Among all renewable sources, the solar energy is an energy source whose availability is free and in an enormous amount; but the main thing is that steps should be undertaken in order to harness the solar energy properly. The following contents in the paper are based on the ways that how solar energy could be harnessed profitably