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Power supply system for arc welding

An arc welding power supply and transformer technology, applied in welding equipment, arc welding equipment, circuits, etc., can solve the problems of narrow power supply voltage adaptability, low power factor, power supply pollution, etc., to achieve no power supply pollution, high power factor, The effect of a large voltage range

Inactive Publication Date: 2002-11-20
姜孟泽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This adjustment method not only wastes energy, but also is troublesome.
The method of changing the conduction angle of the secondary winding of the thyristor can also be used. This adjustment method has low power factor, high manufacturing cost, narrow adaptability to power supply voltage, instability, and power supply pollution.
This is the inevitable shortcoming of the above-mentioned fixing method

Method used

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  • Power supply system for arc welding
  • Power supply system for arc welding
  • Power supply system for arc welding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1. As figure 1 As shown, this is an arc welding power supply system for welding, which is a single-phase AC power supply. It consists of an iron core and a transformer consisting of a primary winding and a secondary winding. An autotransformer compensation transformer is also connected to the primary winding of the transformer. The secondary winding of the autotransformer is connected in series with one end of the primary winding of the transformer, and its primary winding is connected in series with its secondary winding, then connected in series with the bidirectional thyristor, and finally connected to the other end of the primary winding of the transformer. The series end taps of the primary winding and the secondary winding of the autotransformer are connected to the power supply. The operating design value of the magnetic induction intensity of the iron core of the transformer is much smaller than its saturation magnetic induction intensity.

Embodiment 2

[0018] Example 2. If figure 2 shown. An arc welding power supply system for welding, which is the case under the characteristics of a three-phase DC power supply. Both the transformer and the self-coupling compensating transformer are three-phase, and their iron cores are Japanese-shaped. Both the primary winding and the secondary winding of the transformer are wound on the middle leg of the zigzag iron core. The operating design value of the magnetic induction intensity of the iron core of the transformer is much smaller than its saturation magnetic induction intensity.

Embodiment 3

[0019] Example 3. As image 3 shown. An arc welding power supply system for welding is the case of the flat characteristic of the three-phase DC power supply. Both the transformer and the self-coupling compensating transformer are three-phase, and their iron cores are Japanese-shaped. Both the primary winding and the secondary winding of the transformer are wound on the middle leg of the zigzag iron core. The operating design value of the magnetic induction intensity of the iron core of the transformer is much smaller than its saturation magnetic induction intensity.

[0020] Embodiments 1 to 3 have high power factor, stable arc, no power source pollution, low manufacturing cost and energy saving. It can be widely used in AC and DC welding of various metal materials.

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Abstract

The arc welding power supply system is formed from transformer consisting of iron core and first winding and second winding, and a auto compensator transformer is connected on the first winding of the transformer. The second winding of the auto compensator transsformer is series-connected with one end of first winding of the transformer, its first winding is series-connected with its second-winding, then is series-connected with bidirectinoal triod thyristor, finally connected on another end of first winding of the transformer, and the series-connected end of first winding and second winding of the compensator transformer is tapped and connected to power supply. The transformer and compensator transformer can be single-phase, also can be three-phase ones. The power factor is high, arc is stable, can be extensively used for transformation current regualtion and A.C and D.C. welding various metal material.

Description

technical field [0001] The invention belongs to the field of voltage-changing and current-regulating and welding technology, and more specifically relates to an arc welding power supply system for welding of welding equipment. Background technique [0002] In the existing DC arc welding power supply system used for welding, the number of turns of the transformer is designed using the formula V=4.44FNBS. After the transformer is energized, it operates at the rated voltage and is fixed at the high value state of the magnetic induction intensity B. That is, take a value close to its saturation value to make full use of the magnetic transfer capability of the iron core. However, arc welding transformers are all adjusted from small currents to large ones, and are rarely used in full output states. The no-load current is large and the power factor is small. No. ZL94110608.X invention patent uses the principle of moving magnetic field and wave, so tha...

Claims

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Application Information

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IPC IPC(8): B23K9/08H01FH01F27/42H01F38/08
Inventor 姜孟泽
Owner 姜孟泽
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