In electrical engineering, power conversion has a more specific meaning, namely converting electric power from one form to another. This could be as simple as a transformer to change the voltage of 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 voltage regulation.
One way of classifying power conversion systems is according to whether the input and output are alternating current (AC) or direct current (DC), thus:
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There are also devices and methods to convert between power systems designed for single and three-phase operation.
The standard power frequency varies from country to country, and sometimes within a country. In North America and northern South America it is usually 60 hertz (Hz), but in many other parts of the world, is ususually 50 Hz.[1] Aircraft often 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 transformer for a CRT, can also be considered power converters.
See also
References
- ^ Electric Power Around the World, Kropla.com
- 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.
External links
- [1]. A general description of DC-DC converters.
- Switching Power Supplies Design, PSpice Simulation
- U.S. based 50 Hz, 60 Hz and 400 Hz frequency converter manufacturer
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