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Transformer and method for setting windings

A transformer and winding technology, applied in the direction of transformer, transformer/inductor coil/winding/connection, transformer/inductor components, etc., can solve the problem of magnetic unbalanced magnetic excitation of transformer core, improper operation of resistance spot welding system, Inappropriate distribution of transformer windings and electrical excitation, etc., to achieve the effect of balanced distribution

Active Publication Date: 2017-11-24
ROBERT BOSCH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the subject of the invention is an unsuitable distribution of the windings and the electrical excitation in a transformer for resistance spot welding, which causes a magnetically unbalanced magnetic excitation of the transformer core, which consequently causes local magnetic saturation and overall Improper operation of the resistance spot welding system

Method used

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  • Transformer and method for setting windings
  • Transformer and method for setting windings
  • Transformer and method for setting windings

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Embodiment Construction

[0029] figure 1 Represents the output part of a DC resistance spot welding system similar to patents US 7,978,040 B2 and US 7,978,039 B2. exist figure 1 The output section has: a welding transformer 130 to which a pulse width modulated alternating voltage 110 is supplied; diodes 137 and 138 of an output rectifier and an output welding voltage 140 . The transformer 130 includes a primary winding 131, a first secondary winding 132, a second secondary winding 133, and an iron core, in which currents 141 and 142 respectively flow through the first secondary winding and the second secondary winding; The core has two segments 134 and 135 separated by an air gap 136 . The primary winding 131 is divided into a plurality of separate coils, as is the two secondary windings 132 and 133 . The distribution of the primary and secondary coils over the two core segments 134 and 135 must be balanced.

[0030] figure 2 Expressed in figure 1 Proposed balanced distribution of the 12 coils ...

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Abstract

The invention relates to a transformer (130) and a method for magnetically balanced arrangement of windings on an iron core (134, 135; 272, 272; 471; 472) of the transformer (130). The transformer (130) includes an iron core (134, 135; 272, 272; 471; 472), at least one primary winding (251 to 256, 261 to 266; 451 to 456 , 461 to 466) of the primary winding (131), and at least two wound onto the core and comprising a plurality of secondary windings (221 to 226, 231 to 236; 421 to 427, 431 to 437; 611, 612 ) secondary windings (132, 133), and wherein two secondary coils arranged adjacent to each other are arranged next to a side of a primary coil. In particular, the coils are arranged on the iron core in such a way that the difference in magnetization forces transversely through the transformer window is as small as possible and leakage flux through the transformer window is avoided as much as possible.

Description

technical field [0001] The invention relates to a transformer and a method for arranging windings for a balanced magnetic excitation in the core of a transformer, in particular a welding transformer. [0002] The invention belongs to the field of electrical technology and relates to welding transformers, transformer windings, excitation of the windings, arrangement of the windings, in particular to the arrangement and / or implementation of the windings with a balanced magnetic field. Background technique [0003] The technical problem to be solved by the subject of the invention is an unsuitable distribution of the windings and the electrical excitation in a transformer for resistance spot welding, which causes a magnetically unbalanced magnetic excitation of the transformer core, which consequently causes local magnetic saturation and overall Improper operation of the resistance spot welding system. [0004] Distributing the windings on the core of the transformer is usuall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/28H01F27/30
CPCH01F27/2823H01F27/306H01F27/346H01F38/085H01F41/064
Inventor M·佩特伦D·多里纳B·克洛西G·斯图伯格
Owner ROBERT BOSCH GMBH