Publication

Modelling and design of a contactless energy transfer system for a notebook battery charger

Yves Perriard, Paolo Germano
2010
Conference Papers

Abstract

Some applications require an energy transfer without contacts and wires. The mutual inductive effects between two coils allow to transfer energy to an electronic consumer through an air gap. This paper presents an analytical model of a coreless transformer used to design a contactless energy transfer from a platform to a notebook battery charger. By defining the geometric parameters of the transformer, the model is able to compute its magnetic parameters. It is then possible to get the electric quantities with a circuit simplification process. In the scope of an industrial project, this study has been successfully applied to a notebook battery charging platform.

Official source

https://infoscience.epfl.ch/entities/publication/2c2224ee-5964-43f4-b6d2-e2c4ff37d937

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Yves Perriard, Paolo Germano
2010
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/2c2224ee-5964-43f4-b6d2-e2c4ff37d937

About this result

Related concepts (32)

Wireless power transfer

Wireless power transfer (WPT), wireless power transmission, wireless energy transmission (WET), or electromagnetic power transfer is the transmission of electrical energy without wires as a physical link. In a wireless power transmission system, an electrically powered transmitter device generates a time-varying electromagnetic field that transmits power across space to a receiver device; the receiver device extracts power from the field and supplies it to an electrical load.

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.

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.

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