This site is dedicated to providing useful information about electrical power and power conversion.
There are sections with articles about Solar Power, Wind Power and Power Supplies (or electrical Converters).
Click on a navigation category tab – Solar Power, Wind Power, Power Supplies or Articles to find what interests you most.
This articles is general discussion about forms of power.
Electrical Power needs to first be converted from another form of energy – such as wind, water, heat or light.
The first law of thermodynamics states that ‘energy may neither be created nor destroyed’ and most of our energy sources on Earth originate from our sun – our main source of Solar Energy today.
Some solar sources have been stored for centuries or millenia in forms such as fossil fuels – oil and coal. Renewable Energy sources also come from the sun and earths orbital movement – wind, wave and solar. Nuclear Energy sources were locked into the nuclei of elements suitable for nuclear fission or fusion were born from the ‘big bang’ at the birth of the universe.
Electricity is generated by the rotational movement of copper wires through strong magnetic fields. This rotational movement can be created using energy from a Windmill, a Steam Turbine or a petrol / Diesel Engine – or using some clever mechanical system to make use of wave power.
Batteries and Capacitors are able to store Electrical Energy – but only in tiny amounts compared to the amount distributed by National Grids. One pactical storage method has been to pump large volumes of water uphill into storage reservoirs then use water turbines to convert the energy back to electricity when it is needed again.
As another year of rapid change and passes the shadow of recession slowly lifts, a lot of new careers are waiting to be explored in the new decade. How will be developed for children to be located at the crossroads of important roads in 2020? What career options will they have? As we grow in a society based on information and advances in technology, the 2020 generation is caught in a race brain. The youth of the future is likely consider architectural space or genetic counselors, the races can only dream at this point in time.
Lets take a look at some races of the future.
1. Health:
Health involves the diagnosis, treatment and care of people, be they infants, terminally ill or the elderly. The scope of this field has evolved considerably in recent years due to increased investment, growing hospital chains, changing styles life and longer lives. Apart from traditional areas of medical practice (doctors, dentists, ophthalmologists, cardiologists, etc), careers, as hospital administrators, technologists and technicians and medical research is an increase in the long term. Nursing as a profession, also will evolve, especially due to increasing numbers of people to fight for a better life. The latest additions to the series of races next in this area are those in the analysis of brain and genetic counseling.
2. The richness of attention:
Although the financial sector was severely affected by recession, the clouds have slowly begun to change and open up new perspectives. Individual earnings are increasing and so is their willingness to take risks with their money. So, it is necessary for professionals to understand, explain, save and multiply their money for them. This opens the door to careers advice financial investment / risk management, wealth management and corporate finance.
3. Engineering
With innovation in boundless technology, careers unheard of until now touted as options for the new generation. Move over computers and telecommunications engineers, their children specializing in fields such as robotics, teleportation, simulation and space tourism.
4. Education:
Education is another field where investments are coming in. Also, little by little taking a global and commercial avatar. As more institutions collaborating with foreign universities and educational organizations in India, the latter have begun to move towards organized recruitment processes. Apart from the traditional positions, such as chancellors and rectors, the positions as CEO and COO are also taking shape in the system.
As teaching methods continue to reform the 'e' word has made its way into teaching methods. Thus, educational content developers will benefit from a growing importance in the coming years.
5. IT:
An intelligent network has become a necessity for any configuration. Therefore web and systems analysts, designers and Developers will remain in demand and will be necessary to carry out increasingly complex profiles. So are the designers and software developers, consultants Web and information stalls. Moreover, parallel programming is a relatively new race that could become popular in the years ahead.
6. Green Jobs:
The pressure of demand on depleting resources is only likely to multiply in the future. In this scenario, you need people who can come to our rescue, people who specialize in "resource recycling" and "intelligent infrastructure". So when your child grows, you can see them working on jobs in Renewable Energy, biogas, solar and Wind Energy systems, products and services and so on. Other areas are research and development, manufacturing, consulting, power generation, energy efficiency of buildings and the construction and design and implementation of the project. Fields related to sustainable environment that is expected to attract job applicants in the future large scale, similar to what was done a decade ago.
7. Biotechnology Jobs:
Another sector likely to see high growth is biotechnology, which will also create several works in the fields of manufacturing, sales, research, development and so on. career options in this area include drug discovery, cell therapy and tissue engineering, bioinformatics, clinical research, intellectual property, bio-analytical chemistry, plant engineering, etc.
8. Agriculture and other agriculture-based courses:
Despite progress in several areas, agriculture remains an important source of income in India. The advent of agricultural technology should support the growth of agriculture and agricultural sectors. There are and will remain a wide margin for that racing success in the cultivation of flowers, spices processing, pharmaceutical, dairy, fruits and vegetables, meat and fish processing and other sectors food. In addition, job seekers are expected to choose more of organic foods and beverages relatively less explored.
9. Nanotechnology
Nanotechnology is becoming popular and offers plenty of career options in fields as varied as medicine, engineering, cosmetics, hardware and software, robotics, defense, research and development, etc.
10. Other opportunities:
a) Experimental petrologist: These are people who study the evolution and formation of rocks on other planets.
b) Director: A director creates real versions of virtual objects.
c) Weather Modification Police: They oversee more than those produced by iodine-induced rainfall over the clouds. They are responsible to control the amounts of iodine that is used for weather modification.
d) Disconnect: This is a responsibility mental health professional to help wean people from dependence on technology too much.
These are the promises that the future holds for today's children. It seems a difficult path to follow, but always and can not be otherwise. One thing is certain, however, given the vast scope to explore a wide range of career options, providing your child the space to explore of himself is essential.
Also, your child's future, education and success depends on how well you think today. Be prepared and everything will fall into place.
One such device that can help you get started is the Aviva Educost, which enables you to calculate the cost of future education and know the amount you would need to invest today for achieving required corpus.
As environmental concerns have focussed attention on the generation of electricity from clean and renewable sources, wind energy has become the world&#8217;s fastest growing energy source. The authors draw on substantial practical experience to address the technical, economic and safety issues inherent in the exploitation of wind power in a competitive electricity market. Presenting the reader with all the relevant background information key to understanding the integration of wind power into the power systems, this leading edge text:<ul><li>Presents an international perspective on integrating a high penetration of wind power into the power system<li>Offers broad coverage ranging from basic network interconnection issues to industry deregulation and future concepts for wind turbines and power systems<li>Discusses wind turbine technology, industry standards and regulations along with power quality issues<li>Considers future concepts to increase the penetration of wind power in power systems<li>Presents models for simulating wind turbines in power systems<li>Outlines current research activities</ul><p>Essential reading for power engineers, wind turbine designers, wind project development and wind energy consultants dealing with the integration of wind power systems into distribution and transmission networks, this text would also be of interest to network engineers working for power utility companies dealing with interconnection issues and graduate students and researchers in the field of wind power and power systems.Contributors.<p>Abbreviations.<p>Notation.<p>Units.<p>1. Introduction (T. Ackermann).<p><p><b>PART A: THEORETICAL BACKGROUND AND TECHNICAL REGULATIONS.</b><p>2. Historical Development and Current Status of Wind Power (T. Ackermann).<p>3. Wind Power in Power Systems: An Introduction (L. S&#246;der &amp; T. Ackermann).<p>4. Gen@_:áG®{ÿ¾Úð
Wind energy is now the world’s fastest growing energy source. In the past 10 years, the global wind energy capacity has increased rapidly. The installed global wind power capacity has grown to 47.317 GW from about 3.5 GW in 1994. The global wind power industry installed 7976 MW in 2004, an increase in total installed generating capacity of 20%. The phenomenal growth in the wind energy industry can be attributed to the concerns to the environmental issues, and research and development of innovative cost-reducing technologies. Denmark is a leading producer of wind turbines in the world, with an almost 40% share of the total worldwide production. The wind energy industry is a giant contributor to the Danish economy. In Denmark, the 3117 MW (in 2004) wind power is supplied by approximately 5500 wind turbines. Individuals and cooperatives own around 80% of the capacity. Denmark will increase the percentage of energy produced from wind to 25% by 2008, and aims for a 50% wind share of energy production by 2025. Wind technology has improved significantly over the past two decades, and almost all of the aspects related to the wind energy technology are still under active research and development. However, this monograph will introduce some basics of the electrical and power electronic aspects involved with modern wind generation systems, including modern power electronics and converters, electric generation and conversion systems for both fixed speed and variable speed systems, control techniques for wind turbines, configurations of wind farms, and the issues of integrating wind turbines into power systems.
DIVAttracting private investment and delivery of services to the poor majority are priority goals for reforming and regulating the power sector in Sub-Saharan Africa. The licensing process and the tariff regime are important determinants of new investment in the electricity industry. For the licensing process to attract private investors, the procedures must be clear and must function efficiently and transparently, while the tariff regime must reflect actual costs. This book examines the extent to which the twin goals of attracting investment and providing energy to the poor are addressed by the existing legal and regulatory framework. By studying six countries in the east and southern African region, some helpful lessons worth sharing with other African countries are learned.br/divDIVIntroduction–Edward E. Marandu and Dorcas Kayo * An Overview of the Power Sector Reform in Africa–by Stephen Karekezi, John Kimani and Susan Amenya * Zimbabwe: Tariff and Licensing Laws in Zimbabwe: Implications for Private Sector Participation–Dorcas Kayo * Tanzania: Electricity Licensing and Tariff Laws in Tanzania: Implications for Private Investment–Edward E. Marandu (with Rwabangi Luteganya) * Ethiopia: Power Sector Reforms in Ethiopia: Implications for Rural Electrification–Mengistu Teferra * Kenya: Impact of Power Sector Reform on Private Investment and the Poor–Patrick Nyoike. * Malawi–Margaret Njirambo Matinga * Uganda–Simon Peter Engoraitbr/divDIVbEdward Marandu/bis a Senior Lecturer at the University of Botswana and is a Principal Researcher in the African Energy Policy Research Network’s (AFREPREN) Energy Sector Reform theme group.brbrbDorcas Kayo/bis the Chief Business Planner for Zimbabwe Electricity Supply Authority (ZESA) and is also a Principal Researcher in AFREPREN’s Energy Sector Reform theme group.br/div
A High Voltage Power Supply is designed to output high voltage energy. The features that are included in the unit will vary from manufacturer to manufacturer and from model to model. Some units are designed for particular uses. Among those uses are lasers, x-rays, other medical equipment, semiconductors, industrial application, and a number of other uses.
There are a number of different features that you will commonly find in a high voltage power supply. Among these features are the sort of energy input that is compatible with the unit, whether the unit is programmable, and the variety of output that the unit can provide.
If you think of the unit in the terms of a cylinder you can easily picture the process that is involved. Some form of energy or potential energy is placed into one end of the cylinder. Within that cylinder the energy is changed and the voltage is regulated at a high rate. The energy then passes out the other end in the designated condition. This is the process involved in all high voltage Power Supply Units.
For the first step in the process, input, there are a number of basic options. Among the most common are electric energy. This can be input in either AC or DC form depending on the unit that you are working with. In addition to standard Electricity plugs batteries are also used. These may range from small batteries for some units to large batteries in other cases. Batteries are especially useful when the intention is to maintain a constant energy supply. Batteries are also used in conjunction with electric input from a plug for example. In this way there is a backup in the event that the primary power input is interrupted. Beyond batteries there are alternate fuel sources. These may be in the form of gasoline or other fuels that can somehow be converted into electric energy. The specialized units that perform this function are often called generators. Some models of generators may provide low voltage power instead of high voltage. In some cases solar panels can also be used. These supply electric energy that is converted from light. There are also a variety USB input that is now being used for specific high voltage supplies. These and other innovations represent a new horizon in power supply.
Depending on the specifications of the particular high voltage Power Supply Unit something is done inside the supply unit. Often with high voltage supplies the result is that the voltage of the energy introduced is increased significantly. There is a certain amount of control over the output in many of these units. While some units are designed to only output at a single energy rating some allow the user to select various outputs. In some cases these special units are referred to as selectable output or programmable units. With a classic programmable unit though there is often some amount of computer control over the output. In some cases software can allow a computer to actually program the unit. It may also allow for monitoring of the output via computer. Output selectivity can include selection of a particular voltage range and even selection of alternating or direct current in some models.
Introduction; Characteristics of LEDs; Driving LEDs; Linear Power supplies; Switching Power Supplies; Selecting electronic components for power supplies; Magnetic; EMI and EMC Issues; Thermal issues; Safety issues.<br>
