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Three-phase choke

A choke coil and three-phase technology, which is applied in the direction of converting AC power input to DC power output, output power conversion devices, inductors, etc., can solve problems such as asymmetry, achieve the same inductance value, increase cooling surface, Achieving the effect of symmetry

Inactive Publication Date: 2015-01-14
WOBBEN PROPERTIES GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the problem of asymmetry within the three first pillars cannot be resolved by this

Method used

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  • Three-phase choke
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Embodiment Construction

[0035] In the following, the same reference numerals can denote similar, but possibly not identical elements, in order to better explain existing associations. especially, figure 1 and 2 are schematic diagrams, which may therefore be able to deviate from the underlying subject matter and thus also from each other with regard to specific values, such as details of specific dimensions, which do not make sense for the described subject matter.

[0036] figure 1 A three-phase inductor 10 with a magnetic core 20 is shown. The magnetic core 20 has a first magnetic leg 1 , a second magnetic leg 2 and a third magnetic leg 3 , which can also be referred to as main legs 1 , 2 and 3 . Furthermore, the magnetic core 20 has a fourth magnetic leg 4 .

[0037] The three main struts 1 , 2 and 3 are respectively connected to the fourth strut 4 via an upper connecting strut 6 and a lower connecting strut 8 . Thus, each of the three main struts 1, 2 and 3 communicates with each of the two r...

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Abstract

The invention relates to a magnetic core (20) of a three-phase choke (10) comprising a first, second and third magnetic leg (1, 2, 3) for receiving a respective first, second and third electrical winding (L1, L2, L3) of a respective first, second and third electrical phase, wherein the first, second and third legs (1, 2, 3) are arranged in a star-shape or a triangular shape.

Description

technical field [0001] The invention relates to a three-phase choke coil and a magnetic core for such a choke coil. Background technique [0002] Choke coils in the electronic sense are generally known. Depending on the application, the choke has a filtering effect. In particular at the output of the inverter, the choke serves to stretch the pulse-width-modulated current as sinusoidally as possible before it is fed into the supply network. Correspondingly, a corresponding choke is arranged here between the inverter and the supply network into which it is to be fed. [0003] In the case of a three-phase system, choke coils are required for each phase. Usually, such chokes of a three-phase system are combined into three-phase chokes. For this, a magnetic core composed of stacked plates is provided, which has, for example, the appearance of an 8 of a digital display. Thus, there are three legs magnetically connected to one another, which each accommodate a winding of a pha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F3/10H01F37/00H01F38/06
CPCH01F38/06H01F3/10H01F37/00H01F27/24H02M7/537
Inventor 沃伊切赫·京格尔
Owner WOBBEN PROPERTIES GMBH