Power electronics

Power electronics is the application of electronics to the control and conversion of electric power.

An HVDC thyristor valve tower 16.8 m tall in a hall at Baltic Cable AB in Sweden
A battery charger is an example of a piece of power electronics.
A PCs power supply is an example of a piece of power electronics, whether inside or outside of the cabinet.

The first high-power electronic devices were made using mercury-arc valves. In modern systems, the conversion is performed with semiconductor switching devices such as diodes, thyristors, and power transistors such as the power MOSFET and IGBT. In contrast to electronic systems concerned with the transmission and processing of signals and data, substantial amounts of electrical energy are processed in power electronics. An AC/DC converter (rectifier) is the most typical power electronics device found in many consumer electronic devices, e.g. television sets, personal computers, battery chargers, etc. The power range is typically from tens of watts to several hundred watts. In industry, a common application is the variable speed drive (VSD) that is used to control an induction motor. The power range of VSDs starts from a few hundred watts and ends at tens of megawatts.

The power conversion systems can be classified according to the type of the input and output power:

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This article uses material from the Wikipedia article Power electronics, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.