Publication

Sensitivity Analysis of Medium Frequency Transformer Designs for Solid State Transformers

Drazen Dujic, Marko Mogorovic
2019
Journal Articles

Abstract

This paper discusses the technical challenges and trade-offs tied to design of medium frequency transformers for medium-voltage high-power applications and emerging solid state transformers. A dedicated design optimization algorithm is used to generate the set of all feasible transformer designs for the given electric requirements, originating from a modular DC-DC solid state transformer, and taking into account different geometry ratios, materials and operating frequencies. All possible design choice variations are compared in terms of maximum achievable efficiency, gravimetric and volumetric power density, identifying design limits for a given set of input parameters. Impact of modularity and choice of operating frequency directly related to selected semiconductors, reveal interesting trends that can aid overall solid state transformer design optimization.

Official source

https://infoscience.epfl.ch/entities/publication/29f92881-081b-4b81-9137-4a12d8db35a0

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Drazen Dujic, Marko Mogorovic
2019
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/29f92881-081b-4b81-9137-4a12d8db35a0

About this result

Related concepts (26)

Transformer types

A variety of types of electrical transformer are made for different purposes. Despite their design differences, the various types employ the same basic principle as discovered in 1831 by Michael Faraday, and share several key functional parts. This is the most common type of transformer, widely used in electric power transmission and appliances to convert mains voltage to low voltage to power electronic devices. They are available in power ratings ranging from mW to MW. The insulated laminations minimizes eddy current losses in the iron core.

Transformer

A transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple circuits. A varying current in any coil of the transformer produces a varying magnetic flux in the transformer's core, which induces a varying electromotive force (EMF) across any other coils wound around the same core. Electrical energy can be transferred between separate coils without a metallic (conductive) connection between the two circuits.

Alternating current

Alternating current (AC) is an electric current which periodically reverses direction and changes its magnitude continuously with time, in contrast to direct current (DC), which flows only in one direction. Alternating current is the form in which electric power is delivered to businesses and residences, and it is the form of electrical energy that consumers typically use when they plug kitchen appliances, televisions, fans and electric lamps into a wall socket. A common source of DC power is a battery cell in a flashlight.

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