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Hybrid excitation system of power generation electric welding machine and method thereof

A hybrid excitation and electric welding machine technology, applied in the field of excitation, can solve the problems of low no-load voltage, difficult to arc, bulky and other problems, and achieve the effects of smooth excitation current, reduced burr, and stable magnetic field.

Active Publication Date: 2018-06-19
SHANGHAI HUGONG ELECTRIC WELDING MACHINE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the conventional excitation method of synchronous generators is brushless excitation, and the input reactance is increased to enhance its drop characteristics. The disadvantages are high cost, bulky volume, low no-load voltage at low current, and difficult arcing.

Method used

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  • Hybrid excitation system of power generation electric welding machine and method thereof
  • Hybrid excitation system of power generation electric welding machine and method thereof
  • Hybrid excitation system of power generation electric welding machine and method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A hybrid excitation system for a generating electric welding machine, such as figure 1 As shown, it includes a motor rotor and a motor stator wound with an excitation winding 100. The motor stator is sequentially wound with a welding output winding 200 with a coaxial center line, a user power winding 300, a harmonic winding 400 and a fundamental wave winding 400. Winding 500, such as figure 2 As shown, the welding output winding 200 is used to provide welding power, and the welding output winding 200 is electrically connected with a current transformer 600 for inductive welding output current and a rectifier 900 for rectification, such as image 3 As shown, the user power winding 300 is used to provide user power, and the harmonic winding 400 and the fundamental winding 500 are used to provide excitation current to the excitation winding 100 .

[0040] Such as figure 1 and Figure 4As shown, the harmonic winding 400 is a third harmonic coil, and the number of turns ...

Embodiment 2

[0044] Combining the above-mentioned inventive idea of ​​the technical solution of the present invention, a hybrid excitation method of a power generation electric welding machine, such as Figure 5 shown, including the following steps:

[0045] Step S1: Wind the welding output winding 200 on the motor stator, wind the excitation winding 100 on the motor rotor, and wind the user power supply winding 300 outside the welding output winding 200; after the motor rotor rotates, fix the magnetic field on the motor rotor to cut the welding output The winding 200 and the user power winding 300, the welding output winding 200 is used to provide welding power, and the user power winding 300 is used to provide user power.

[0046] Step S2: Determine the turns of the fundamental winding 500 and the harmonic winding 400; wherein, the harmonic winding 400 is a third harmonic coil. Determining the number of turns of the fundamental winding 500 and the harmonic winding 400 can improve the ef...

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Abstract

The invention discloses a hybrid excitation system of a power generation electric welding machine and a method thereof. The system comprises a motor rotor and a motor stator, wherein the motor rotor is wound with an excitation winding, the motor stator is sequentially wound with a welding output winding, a user power source winding, a harmonic wave winding and a fundamental wave winding which havea coaxial line and are wound from inside to outside, the harmonic wave winding and the fundamental wave winding are connected in series, the turn number of the harmonic wave winding is three times the turn number of the fundamental wave winding, an output end of the harmonic wave winding and the fundamental wave winding after series connection is electrically connected with a voltage regulator and the excitation winding, the voltage regulator is connected in parallel with the output end, the voltage regulator is electrically connected with the excitation winding, the welding output winding iselectrically connected with a current transformer, and the motor rotor is provided with an initial excitation device. The system is advantaged in that after the motor rotor rotates, a generator continuously generates power, and output properties of easy arc generation, no arc break, small splash and good molding are realized.

Description

technical field [0001] The present invention relates to the field of excitation technology of electric generating electric welding machine, more specifically, it relates to a hybrid excitation system and method of electric electric generating electric welding machine. Background technique [0002] Power generation welding machine is a kind of rotary power generation powered by gasoline engine or diesel engine. It provides DC power for welding through rectification module. It is also called power generation and welding dual-purpose machine. [0003] The generator used by the generator welding machine is a synchronous generator, and its excitation forms include electric excitation and permanent magnet. The electric generation welding machines in the prior art generally adopt electric excitation, and the excitation system is easy to achieve high performance because the excitation winding and the armature winding are separated. [0004] However, the conventional excitation meth...

Claims

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Application Information

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IPC IPC(8): H02P9/38
CPCH02P9/38
Inventor 不公告发明人
Owner SHANGHAI HUGONG ELECTRIC WELDING MACHINE MFG
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