Magnetic Devices in Power Electronics

Magetic Devices in Power Electronics

The role of Magnetic Devices in Power Electronics

Magnetic devices play a critical role in power electronics system performance. There are many applications in a power electronics system that require the use of magnetic components, such as high frequency power transformers, DC inductors, EMI input filter inductors, current transformers, and gate drive tansformers.

Features of power electronics magnetics

There are several distinct features of all of these magnetic components. The first feature is high frequency operation: power electronics circuits can run anywhere from the low kilohertz range to the megahertz range. Second, a wide range of power level is involved, from milliwatts to megawatts. Third, the magnetic cores in many power electronic circuits require resetting due to the switching nature of the circuit. Finally, the magnetic cores in many applitcations are excited using square-wave voltages instead of the sinusoidal signals present in standard power circuits.

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