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Electromagnetic induction device

A technology of electromagnetic induction and magnetic field, applied in the electronic and electrical fields, which can solve problems such as interference with the operation of components, overheating, etc.

Pending Publication Date: 2022-07-08
COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES +1
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0023] In fact, even if the saturation of the core is still localized near the air gap, the air gap is still the site of magnetic losses and overheating, which can interfere with the operation of the entire component
[0024] Furthermore, these magnetic and thermal losses limit the realization of such a magnetic inductor to current I with high frequencies, in particular high frequencies up to 500 kHz.

Method used

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Embodiment Construction

[0062] The invention relates to an electromagnetic induction device provided with a variable air gap, and the variable air gap is provided with a heat dissipation device.

[0063] In particular, the device according to the invention comprises a core that accommodates a variable air gap. In addition, the air gap includes a first ferromagnetic plate for directing the magnetic flux that can originate from the core and for operating in saturation mode with a magnetic flux value lower than that required for saturation of the core, the magnetic flux throughout the magnetic circuit is conserved.

[0064] The variable air gap according to the present invention also includes lateral protrusions forming a heat sink and extending from the lateral surface of the first plate.

[0065] More particularly, the present invention relates to electromagnetic induction device 100 ( Figure 1 to Figure 3 ).

[0066] The electromagnetic induction device 100 may be a magnetic inductor with inducti...

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Abstract

The present invention relates to an electromagnetic induction device provided with a variable air gap equipped with a heat dissipation device. In particular, the device according to the invention comprises a core in which a variable air gap is housed. The air gap also includes a first ferromagnetic plate intended to direct a magnetic flux that may originate from the core and may collectively have a saturation magnetic field that is smaller than the saturation magnetic field of the core. The variable air gap according to the present invention also includes a lateral protrusion forming a heat sink and extending from a lateral surface of the first plate.

Description

technical field [0001] The present invention relates to the fields of electronics and electricity. In particular, the present invention relates to a magnetic inductor having variable induction and having reduced magnetic and thermal losses compared to devices known in the prior art. [0002] Advantageously, the magnetic inductor according to the invention is implemented in an AC / DC or DC / DC power converter, in particular a dual active bridge ("DAB") converter. Background technique [0003] Magnetic inductors are devices well known to those skilled in the art and are implemented in many applications. [0004] Typically, a magnetic inductor includes a core made of ferromagnetic material, and a winding formed around a section of the core. The core may also include air gaps. This device is characterized by a characteristic quantity called the magnetization induction L, which depends on the ferromagnetic material, the geometry of the core (and its air gap), and the winding, in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F3/14
CPCH01F3/14H01F27/22H01F3/10H01F21/08Y02B70/10
Inventor 杰拉德·蒂列特泽格·卢多特乌尔里希·休坡瑞曼内恩E·卡杜
Owner COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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