- Electric power conversion
electrical engineering, power conversion has a more specific meaning, namely converting electric powerfrom one form to another. This could be as simple as a transformerto change the voltageof AC power, but also includes far more complex systems. The term can also refer to a class of electrical machinery that is used to convert one frequency of electrical power into another frequency.
Power conversion systems often incorporate redundancy and
One way of classifying power conversion systems is according to whether the input and output are
alternating current(AC) or direct current(DC), thus:
* DC to DC
DC to DC converter
* AC to DC
power supplyunit (PSU)
Switched-mode power supply
* DC to AC
* AC to AC
There are also devices and methods to convert between power systems designed for single and three-phase operation.
The standard power in the U.S. is usually 60
hertz(Hz), but in much of Europe, and other parts of the world, the standard is 50 Hz, and thus factories that want to manufacture products in one region for export to the other need a frequency converter that converts one frequency to the other.
Another application is in the aerospace and airline industries. Often airplanes use 400 Hz power so 50 Hz or 60 Hz to 400 Hz frequency conversion is needed for use in the ground power unit used to power the airplane while it is on the ground.
Certain specialized circuits, such as the
flyback transformerfor a CRT, can also be considered power converters.
3 phase loads
* Abraham I. Pressman (1997). "Switching Power Supply Design". McGraw-Hill. ISBN 0-07-052236-7.
* Ned Mohan, Tore M. Undeland, William P. Robbins (2002). "Power Electronics : Converters, Applications, and Design". Wiley. ISBN 0-471-22693-9.
* Fang Lin Luo, Hong Ye, Muhammad H. Rashid (2005). "Power Digital Power Electronics and Applications". Elsevier. ISBN 0-12-088757-6.
* Fang Lin Luo, Hong Ye (2004). "Advanced DC/DC Converters". CRC Press. ISBN 0-8493-1956-0.
* Mingliang Liu (2006). "Demystifying Switched-Capacitor Circuits". Elsevier. ISBN 0-7506-7907-7.
* [http://www.powerdesigners.com/InfoWeb/design_center/articles/DC-DC/converter.shtm] . A general description of DC-DC converters.
* [http://www.smps.com/index.xml Switching Power Supplies Design, PSpice Simulation]
* [http://www.hzfrequencyconverter.com U.S. based 50 Hz, 60 Hz and 400 Hz frequency converter manufacturer]
Wikimedia Foundation. 2010.
См. также в других словарях:
Electric vehicle conversion — An electric vehicle conversion is the modification of a conventional internal combustion engine vehicle (ICEV) to electric propulsion, creating an all electric or plug in hybrid electric vehicle. Contents 1 Elements of a conversion 1.1 Solar… … Wikipedia
Electric power transmission — Electric transmission redirects here. For vehicle transmissions, see diesel electric transmission. 400 kV high tension transmission lines near Madrid Electric power transmission or high voltage electric transmission is the bulk transfer of… … Wikipedia
Electric power — is defined as the rate at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt.When electric current flows in a circuit, it can transfer energy to do mechanical or thermodynamic work. Devices convert… … Wikipedia
Electric power distribution — … Wikipedia
electric power — ▪ physics energy generated through the conversion of other forms of energy, such as mechanical, thermal, or chemical energy. Electric energy is unrivaled for many uses, as for lighting, computer operation, motive power, and entertainment… … Universalium
American Power Conversion — Schneider Electric Logo de Schneider Electric SA Création 2 4 décembre 1871 Dates clés 1975 : rachat de Merlin Gerin, 1988 … Wikipédia en Français
American Power Conversion — Konzerninformation Unternehmensform GmbH, Tochterunternehmen von Schneider Electric Gründung 1981 Hauptsitz West Kingston (Rhode Island) … Deutsch Wikipedia
American Power Conversion — Corp. Тип Корпорация (NASDAQ: APCC) Год основания 1981 Расположение … Википедия
Booster (electric power) — A Booster was a motor generator (MG) set used for voltage regulation in direct current (DC) electrical power circuits. The development of alternating current and solid state devices has rendered it obsolete. Boosters were made in various… … Wikipedia
History of electric power transmission — In the early days of commercial use of electric power, electric power transmission restricted the distance between generating plant and consumers. Originally generation was with direct current, which could not easily be increased in voltage for… … Wikipedia