Wind energy conversion systems are now occupying important space in the research of renewable energy sources. There is a need for further research on Wind Generators and Power Integration Topologies. In this work we are using Permanent Magnet Synchronous Generator (PMSG) for wind power generation and the behavior of PMSG when subjected to different wind speeds is being studied in MATLAB. This also provides a comparison of different power converter topologies used in Wind Energy Conversion System (WECS).
In this book a dynamic models have been developed for the following: variable speed wind energy conversion systems and power electronic interfacing devices. These dynamic models are suitable for both detailed fast transient and large time scale performance evaluation studies. They can be used to expedite the research processes in the related alternative energy areas, such as system control, performance optimization studies and diagnosis. One of the original points is that this work is the use of a new the fault detection and isolation method (FDI). The proposed method avoids the exploration of all the combinations for its application to the diagnostic of this system operation. The causal paths are used to generate the analytical redundancy relations (ARR) at each computation step based on the constitutive and structural junction relations. This is shown through an algorithm for monitoring the system by sensors placements on the corresponding bond graph model.
Reactive power pricing has always been essential for reliable & efficient system operation whether power market is regulated or deregulated. Since, the Nepalese power market is on the way of restructuring, the issue of reactive power pricing in Nepalese system is emerging. The aim of reactive power pricing is to encourage reactive power generation in the system providing the incentives for reactive sources according to their contribution to the system. The study proposes a capacity based reactive power pricing of reactive sources according to their contribution on voltage support & loss reduction contribution. Voltage sensitivity method has been used to evaluate the reactive sources. Generation Marginal Loss Sensitivity, Load Marginal Loss Sensitivity & Reactive Power Value (RPV) of sources with & without shunt capacitors has been calculated. It is found that Generation Marginal Loss Sensitivity for active & reactive loads without shunt capacitor is greater than that with shunt capacitor. Similarly, RPV of generators without shunt compensation is higher than that with shunt compensation which is obvious due to importance of reactive power in the absence of compensation.
The consumer guide to small-scale wind electricity production! Maybe you're not T. Boone Pickens, but you can build your own home-sized wind-power empire right in your back yard. Wind Power For Dummies supplies all the guidance you need to install and maintain a sustainable, cost-effective wind generator to power your home for decades to come. This authoritative, plain-English guide walks you through every step of the process, from assessing your site and available wind sources to deciding whether wind power is the solution for you, from understanding the mechanics of wind power and locating a contractor to install your system to producing your own affordable and sustainable electricity. Guides you step by step through process of selecting, installing, and operating a small-scale wind generator to power your home Demystifies system configurations, terminology, and wind energy principles to help you speak the language of the pros Helps assess and reduce your energy needs and decide whether wind power is right for you Explains the mechanics of home-based wind power Shows you how to tie into the grid and sell energy back to the power company Offers advice on evaluating all of the costs of and financing for your project Provides tips on working with contractors and complying with local zoning laws Yes, you can do it, with a little help from Wind Power For Dummies.
A simple control strategy for converter current control using diode clamped multilevel inverter (DCMLI) with level shifted carrier PWM modulation in the current control mode for real power injection as well as load compensation has been proposed for wind energy integration to grid . The converter current injected into a distribution system is controlled in accordance with the wind variation and load compensation is performed as an added facility in order to free the source current being fed from the grid at PCC to be free from harmonic distortion, unbalance and low power factor even though the load currents may be so. The results are validated using PSCAD/EMTDC simulation studies
The increasing penetration of renewable energy in the power system grid makes it one of the most important topics in electricity generation, now and into the future. Tidal current energy is one of the most rapidly growing technologies for generating electric energy. Within that frame, tidal current energy is surging to the fore. Forecasting is the first step in dealing with future generations of the tidal current power systems. The doubly-fed induction generator (DFIG) and the direct drive permanent magnet synchronous generator (DDPMSG) are the most commonly used generators associated with tidal current turbines. The aim of the present work is to propose a forecasting technique for tidal current speed and direction and to develop dedicated control strategies for the most commonly used generators, enabling the turbines to act as an active component in the power system.
It’s almost impossible to read or watch the news today without seeing stories related to energy. At this time, questions about energy are taking on an increasingly more important major role in the national discussion. The most common question asked is: In a world where the subject of minimizing the use of energy becomes more critical, how can we as architects take advantage of our environment with no or minimal impact on it? How can we learn from the ancient and traditional architecture and use those methods in our design in order to minimize energy use? One answer is to use a passive systems utilizing natural ventilation to achieve energy reduction. This system can be found in both wealthy and less developed regions. There are many magnificent building styles from all over the world with new shapes, materials, arrangements, decorations, and concepts for heating, cooling and more. But unfortunately vernacular architecture, which is the product of the relationship between nature and culture, has been ignored over the last couple of centuries as modern methodologies took over. This is unfortunate since many of the old ways use natural methods and simple concepts.
Energy is the fuel for growth of the world. An increased access to electricity enhances opportunities for industrial development and improves health and education. Renewable energies (RE) have a large potential to maintain sustainable energy. Hybrid renewable energy systems, is a system that combines more than one renewable energy technology. The hybrid of photovoltaic‘s and wind turbine, is one of the most promising applications of renewable energy technologies in remote areas. Ethiopia is one of the developing countries in which most parts of the country are rural areas. They do not have electrical distribution line. One of the rural areas is villages found around Wonji-Shoa Sugar Factory. Since there is no enough water in the area, people are suffered from absence of water and food. The objective of this book is to design and model a fuzzy logic based solar/wind power for irrigation system in case of Wonji-Shoa villages. In this book a wind and solar energy potential assessment has been done using the data obtained from NMA. Beside to PV system, wind turbine, converters, diesel generators are modeled and simulated on MATLAB software.
This book focuses mainly on the Wind and photo voltaic hybrid power generation system which are connected to the main grid. The information of the wind system bases on the wind site of EL-ZAFARANA in Hurgada in Egypt. This study investigates the main parameters which are used to define the power quality of the distributed energy resources to be suitable for grid connection.
This work undertakes a probabilistic analysis of the current private LUEC - Levelized Unit Energy Cost of electricity produced by large offshore and onshore wind power plants in Italy. The calculations of the implemented LUEC model use factors whose data was collected throughout relevant existing literature on the subject. The calculations are performed using the Monte Carlo method with a number of trials dependent upon the achievement of desired confidence and precision levels for selected statistics of the resulting LUECs’ probability distributions curves. By means of a sensitivity analysis, the dissection of the results of this work points to a major influence of the territorial factor in the onshore energy cost and to a combination of territorial and technological factors in the offshore one. The work also analyses the impacts of the cost necessary to upgrade the electric grid in order to accommodate increasing levels of wind power and of the negative externalities produced by this source on, respectively, the public and the social cost of wind electricity. The incentives systems used by the Italian government to support wind energy are then discussed in light of the results.
Physics of Energy Sourcesprovides readers with a balanced presentation of the fundamental physics needed to understand and analyze conventional and renewable energy sources including nuclear, solar, wind and water power. It also presents various ways in which energy can be stored for future use. The book is an informative and authoritative text for students in the physical sciences and engineering and is based on a lecture course given regularly by the author. With the ever increasing demand for sustainable, environmentally-friendly and reliable sources of energy, the need for scientists and engineers equipped to tackle the challenges of developing and improving upon commercially viable energy sources has never been more urgent. By focusing on the physical principles governing energy production, storage, and transmission, this book provides readers with a solid foundation in the science and technology of energy sources. Physics of Energy Sources features include: Analyses of conventional and renewable energy sources in terms of underlying physical principles Integrated application of a wide range of physics, from classical to quantum physics Coverage of nuclear, wind, wave, tidal, hydroelectric, geothermal and solar power, including many practical systems Consideration of efficiency for power production as well as energy storage and transportation Consideration of key environmental issues Worked examples in text, and problems & solutions to encourage understanding Derivation of formulae with a minimum of mathematical complexity
The wind power is a popular form of energy generation, the construction of wind farms and small wind electric generators are not universally welcomed because of the power quality issues due to which the converted energy could not be used more effectively. The frequency mismatch is one of the major crisis under the power quality issues when the renewable energy system is connected to the grid. Therefore the main objective of this project is to equalize the number of cycles per second in the grid as well as number of cycles per second in the inverter under different load conditions at various time periods. Hence the proposed project regarding frequency control scheme using grid integrated inverter for wind mill applications effectively compromises the drawbacks. Mainly the frequencies mismatch in the existing systems by equalizing the frequencies difference between the grid as well as the inverter.
Shaft voltage has become a serious problem in large power plants. This book assigns the potential sources of shaft voltage and its effects on bearings. The shaft voltages and bearing currents are due to the common mode voltage component of the output voltage from the static excitation system. The main objective of this book is to develop a gas turbine generator excitation-shaft-to-bearing model and simulate the model to investigate the shaft voltage and bearing current occurrence in a power station. To address the shaft voltage by using grounding brushes is proposed, the simulation of the developed model is implemented by the Matlab. The values of shaft voltages and bearing current on the exciter end and the turbine end are investigated based on the data that had been obtained from Sultan Power Station manual. The results of shaft voltages and bearing current with and without the shaft to ground brushes connected at the exciter end and turbine end are analysed. In this book, optimization solver is also employed to determine the optimal values of capacitor and resistor to model the grounding brushes used to eliminate shaft voltage at exciter end and turbine end of the generator.
In recent years the use of renewable energy including wind energy has risen dramatically. Because of the increasing development of wind power production, improvement of the control of wind turbines using classical or intelligent methods is necessary. In this book, in order to control the power of wind turbine equipped with DFIG, a novel intelligent controller based on the human mind's emotional learning is designed. The performance of proposed controller is confirmed by simulation results.
Design of photovoltaic Wind Energy System Hybrid Electric Power System (PV/WES HEPS) has many issues if we take all economical and technical parameters into account. The Book presents a complete design and simulation of a PV/WES HEPS to be interconnected with utility grid, UG. The proposed design of PV/WES HEPS is based on energy balance, minimum price of gener¬ated kilo watt hour (kWh), maximum power point tracking for PV and WES by using an artificial intelligence technique. This Book presents also a possible circuit topology and controller design for a grid- connected DC-AC power converter. In this Book we present a study, describe a control strategy for interconnection of hybrid system with electric utility accompanied with or without battery storage using artificial intelligence techniques and also a fuzzy logic technique to calculate and assess the reliability index for each HEPS configuration under study.