Control and Conversion of Electrical Power by Power Semiconductor Devices
Power electronics refers to control and conversion of electrical power by power semiconductor devices wherein these devices operate as switches. Advent of silicon-controlled rectifiers, abbreviated as SCRs, led to the development of a new area of application called the power electronics. Prior to the introduction of SCRs, mercury-arc rectifiers were used for controlling electrical power, but such rectifier circuits were part of industrial electronics and the scope for applications of mercury-arc rectifiers was limited. Once the SCRs were available, the application area spread to many fields such as drives, power supplies, aviation
What is power electronics?
Power electronics is the application of electronic circuits to energy conversion.
You may have more interaction with power electronics than you think. If you drive a car, use a computer, cook with a microwave, talk on any type of telephone, listen to a stereo, or make holes with a cordless drill, then you come in contact with power electronics. Thanks to power electronics, the electricity needed to run the things you use everyday is processed, filtered, and delivered with maximum efficiency, smallest size and minimal weight. In formal terms, "This technology encompasses the use of electronic components, the application of circuit theory and design techniques, and the development of analytical tools toward efficient electronic conversion, control, and conditioning of electric power."
The main areas of power electronics research include:
• Electronic devices (like diodes and transistors)
• Control and regulation
• Power converter circuit design and work wit...
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...by the year 2010. With the improvements in power electronics technology that the Center for Power Electronics Systems (CPES) has planned, the U.S. will be able to reduce its energy consumption by 30 percent.
Recognizing the tremendous challenges involved in realizing these types of improvements in power electronics technology, five universities and more than 80 corporations joined forces in 1998 to create CPES.
In order to achieve vision, many active countries
are working on this technology and they are optimistic that by using power electronics they will reduce 70 percent power consumption .
Development of power electronics processes using an integrated systems approach ; improve the quality, reliability, and cost-effectiveness of power electronics systems; and reduce both the time and effort associated with design cycles for systems application
Muller, S., Prowse, D. L., & Soper, M. E. (2012, September 25). CompTIA A+ Cert Guide: Power Supplies and System Cooling | Foundation Topics | Pearson IT Certification. Retrieved March 20, 2014, from http://www.pearsonitcertification.com/articles/article.aspx?p=1945640
Other advancements in lighting to come include wind-powered lights and interactive lights. Wind-powered street lights will be powered by the gusts of wind created when a car passes by, reducing the need to burn fossil fuels to power the lights. Interactive lights will be turned off, but as the car approaches they light up, then fade back away as the car passes by. Smart new technology has brightened the future of roadway systems!
U.S. energy dependence is higher today than it was during the oil shock of the 1970's, and oil imports are projected to increase. Passenger vehicles alone consume 6 million barrels of oil every single day. If just 20 percent of cars used full cells, we could cut oil imports by 1.5 million barrels every day. 10,000 fuel cell vehicles running on non-petroleum fuel would reduce oil consumption by 6.98 million gallons a year.
increasing the supply of renewable energy would allow us to replace carbon-intensive energy sources and significantly reduce U.S. global warming emissions… a 25 percent by 2025 national renewable electricity standard would lower power plant CO2 emissions 277 million metric tons annually by 2025—the equivalent of the annual output from 70 typical (600 MW) new coal plants (“Benefits of Renewable Energy
The United States has many directions to choose from in the oncoming future of energy. “Options for the world's energy future may include surprises, thanks to innovative research under way around the world” (LePoire 1). History has shown that surprises can change generations . Since the mid 1900’s, experts have been conducting research on the way our nation has been using energy. The United States have relied on other countries to gain knowledge with their energy sources. China is one huge partner that helps them out a lot. They have experimented with many different alternative energy sources and have given the U.S lots of helpful information for improving our energy demands. Even though we already meet most of our energy requirements, we still look into improving it everyday to improve our way of living. Despite its ability to be supplied with other nations to be supplied with other nations, the U.S. must invest in alternative power sources if it is to meet the energy demands of the 21st century.
“Where does our power come from?”, when asked, many people would not know the answer to this question. Some might say wind, water, or solar, but the main providers of America’s power are coal plants and nuclear reactors running to keep the lights on. Unfortunately, there is no free energy, it comes at a cost to the environment and its inhabitants. So when the choice arises to change the way humanity looks at our consumption of power, why choose the way we do things? Because the time has come for us as a country and the world to make the switch from the old to the new.
The world is entering an energy crisis that will require the need for new energy sources.
“What we need to do is really improve energy efficiency standards, develop in full scale renewable and alternative energy and use the one resource we have in abundance, our creativity.” (Lois Capps) There are many ways we can utilize our abundance of creativity. Some have yet to be discovered, but some are being sought out today. One of these is the rise of the electric car. Despite a rough start competing with petroleum cars, electric cars will see a spark in popularity in the automotive market within the next few years with new models being developed and more charge stations being installed world wide. With more efficient ways of harvesting energy, the electric car will see more practical use and make its way into the lives of the average
The year is 2200. The world is going through a fossil fuel shortage. Oil reserves are almost completely consumed and it is becoming impossible to find new fossil fuel sources. Not prepared for this event to occur, The United States, has no alternative options. As a result of the oil shortage, the standard of living deteriorates. Heat in homes, supermarkets full of food, and transportation, all basic necessities taken for granted, will be depleted because fossil fuels are used to power almost everything. The key to the prevention of this future is renewable energy. Unfortunately the support for the use of renewable energy is weak and ineffective. Unless the US puts forth effort to research and promote the use of renewable energy to consumers, conversion from fossil fuels to renewable energy will no longer be an option.
In this paper, I will talk about how AC circuits can be described by considering voltage and current using complex numbers. An AC circuit requires two separate numbers to be able to completely describe it. This is because it takes into account the amplitude and the phase of the current. The fact that complex numbers can be easily added, subtracted, multiplied or divided with each other makes them ideal for this operation where both amplitude and phase have to work together.
People are always looking for ways to save money. By using “Green” computer components you can save money and energy. Everyone having a computer powered on days at a time can use up a lot of energy, which will lead to a large energy bill. There is a lot of different ways to adapt your computer to be more energy efficient. Using more energy efficient computer components and changing settings in your operating system will save you big. By purchasing more energy efficient components such as processors, hard drives and computer monitors you can make your computer consume less power thus saving energy.
As an engineering student, design, develop and test electrical equipments is the major purpose of all time. In other words, electrical engineer is concerned with using electricity to transmit electric power. In electrical engineering, there are extensive subfields such as power engineering, control system and signal processing. It is also worth to point out the difference between electrical engineering and electronic engineering. According to the research, electronic engineering is a major that deal with the electronic system such as computers and radar, to be more specific, electronic engineers are concerned with using electricity to process information.
The implementation of a process of continuous improvement in a company is a very long task. To enable Honda to reduce manufacturing costs and eliminate product defects to bring progress forward, sets up key performance indicators, initiates and deploys visual management at all levels. Modine and Honda are working together to solve their needs and improve their performance, the market has a need for this cooperation between Modine and Honda, a relationship that makes both more efficient. Modine and Honda continue to improve on the market by being a global, customer-focused company offering exceptional quality, innovation and value. This relationship is very beneficial for both companies in expanding their global customer platform capabilities, it allows us to offer a good management systems and also treat advanced systems technologies for the needs Future of the market. Respectively, specializes in management systems and components, providing highly engineered heating and cooling technology and solutions to diversify global markets. Modine 's actual results, performance or achievements may differ materially from those expressed or implied by such statements, due to certain risks and uncertainties. More specifically, this press release contains forward-looking statements about the benefits of a collaborative relationship. These forward-looking statements
US DOE Energy Efficiency and Renewable Energy. (2006, July 26). Retrieved July 26, 2006, from http://www.eere.energy.gov/
A computer is a device which is used for several applications; business, gaming, or school. It’s important for people to know how computers work because in this day and age, operating a computer is an everyday task. This complex electrical device utilizes several parts inside of it to keep itself cool, conduct the proper tasks, and maintain stability. These devices can be found several places whether it be on the job, in one’s room, or on a school campus. Computers are essential for everyday use in order to complete what is required. What each component is and its function will be described.