Energy-saving control circuit of engine-driven power generation and electric welding dual-purpose machine

Abstract

The invention provides an energy-saving control circuit of an engine-driven power generation and electric welding dual-purpose machine, which comprises an engine, a generator, a magnetor, a potentiometer, an idle speed controller and a control switch, and is characterized in that the generator comprises a third harmonic winding, a rotor winding, a direct current winding, a main winding and an electric welding winding, and the magnetor is connected with the rotor winding through a magnetor rectifying circuit; during welding, the potentiometer is connected between the harmonic rectification circuit and the rotor winding in series, and the main winding and the electric welding winding are connected in series and penetrate through the idle speed controller to be connected with the panel socket. The idle speed controller is connected with an energy-saving electromagnetic valve, the direct-current winding is connected with a direct-current rectifying circuit, the direct-current rectifying circuit is connected with the idle speed controller to supply power, the direct-current rectifying circuit is connected with a fuel oil stop valve through an electric door lock switch, and an electrolytic capacitor is connected to the direct-current rectifying circuit in parallel. The control circuit can achieve an energy-saving effect.

Description

technical field [0001] The invention relates to the technical field of DC electric welding machines, in particular to an engine-driven power generation and electric welding dual-purpose machine, and in particular to an energy-saving control circuit of the DC electric welding machine. Background technique [0002] At present, similar power generation and welding dual-purpose machines on the market mainly include engines and generators, and the conventional excitation methods of synchronous generators: one is to use brushless excitation, but the voltage stabilization performance of brushless excitation is poor, especially with inductive and capacitive The load performance is poor; the second is to use brush excitation, but it needs a voltage regulator (AVR). In a pole synchronous generator, when the rotor coil of the main engine is fed with direct current, an approximately rectangular magnetomotive force wave is generated on the magnetic pole. Due to the uneven air gap between...

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Problems solved by technology

[0003] As disclosed in the patent number CN201721174356.2, a power generation electric welding machine includes a gasoline engine, an electric welding generator and a permanent magnet generator. The gasoline engine drives the permanent magnet generator to generate electricity, and the permanent magnet generator is connected to the electric welding generator through a current controller. , the rotor of the electric welding generator is embedded with excitation winding, the stator is embedded with small current winding, high current winding, auxiliary power supply winding and excitation power supply winding, the excitation winding in the rotor is connected with the current controller, the excitation power supply winding in the stator is connected with The current controller is connected, the small current welding winding and the high current welding winding respectively output large welding current and small welding current through the rectification circuit module, and the auxiliary power supply winding outputs auxiliary power after passing through the rectification circuit module and inverter circuit module, but the third harmonic cannot be reduced. The damage caused by waves, and in the case of no work, the energy consumption is high, so it is necessary to upgrade the energy saving

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