Circuit capable of eliminating electrolytic copper foil surface processor high frequency switch power supply eddy current and method thereof

Abstract

Through changing a parameter of a three-type error amplifier in a high frequency switch power supply, a C2 is 0.22UF, frequencies of an initial pole and a first pole are decreased to a number obtained through dividing a previous frequency by two and matching of a direct current power supply and an electrolytic copper-foil post-processing winding control system is stable. An output position of the direct current power supply is externally connected to a LC flat wave network so as to realize absorption of the eddy current. Through the above modes, a purpose of eliminating the eddy current is reached. From two aspects of circuit parameter control and eddy current absorption, a problem that a surface processor conduction roller bearing pedestal gives out heat is solved. A phenomenon that the bearing pedestal gives out heat and is damaged caused by the eddy current is effectively avoided. Equipment stability is increased and quality of a copper foil product is stabilized.

Description

technical field [0001] The invention relates to a circuit and a method for eliminating eddy currents, in particular to a circuit and a method for eliminating eddy currents in a high-frequency switching power supply of an electrolytic copper foil surface treatment machine. Background technique [0002] In recent years, the rectifier power supply in the electrolytic copper foil industry has gradually replaced the thyristor power supply with high-frequency switching power supply. The biggest advantage of this power supply is its high efficiency and good energy-saving effect. However, there are problems such as electromagnetic interference, harmonic pollution, and eddy current in the use of high-frequency switches. Generally, the electromagnetic interference is reduced or eliminated by adding a filter at the input end, and the harmonic pollution is reduced or eliminated by centralized processing. But there is no better treatment method for the eddy current phenomenon. [0003]...

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Problems solved by technology

[0004] At present, the conventional method to deal with this problem is: on the one hand, by increasing the cooling water of the conductive roller, cooling the conductive roller from the outside, thereby taking away the temperature of the bearing seat, and cooling the bearing seat, but this method cannot completely eliminate the eddy current At the same time, the volume of the processor becomes large; on the other hand, by replacing the bearing seat in time, more losses caused by equipment damage can be avoided, but this method significantly increases the cost of production and maintenance

Since these two methods cannot fundamentally eliminate the hidden danger of eddy current, the quality of copper foil products cannot be guaranteed

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