Contactor power supply device

Abstract

The invention discloses a contactor power supply device. The device comprises a surge suppression power filter circuit, a power factor calibrating circuit, a high-frequency switch power supply, a high-voltage and low-voltage switching circuit, a first isolating circuit, a second isolating circuit, a low-power-consumption maintaining circuit, a microprocessor, a voltage detecting circuit, an output circuit, a switching circuit and a contactor. In this way, the reliability of the contactor is improved greatly, the service life of the contactor is prolonged, voltage sudden drop or loss is prevented, energy is saved, environmental friendliness is realized, the electricity saving rate reaches over 90%, silent working is realized, noise pollution is reduced, and the device is necessary for power distribution units used in electric, metallurgy and industry and mining enterprises and meets the state policies for voltage sudden drop or loss prevention, energy saving and environmental friendliness which need to be developed energetically.

Description

technical field [0001] The invention belongs to the technical field of electrical controllers, and in particular relates to a contactor power supply device, which is suitable for various types of AC and DC contactors, and is also suitable for electromagnetic mechanisms such as solenoid valves, and is a power distribution device for electric power, metallurgy, and industrial and mining enterprises. necessary equipment in . Background technique [0002] The contactors widely used in the market do not have a controller. This kind of contactor often sucks tight sometimes, loose sucks or does not suck sometimes due to the unstable grid voltage. In this way, it will cause great arcing and damage to the contacts of the contactor, and even increase the probability of burning the contactor wire package, thereby greatly shortening the service life of the contactor. [0003] The contact of the contactor is realized entirely by the magnetic field generated by the wire package of the c...

AI Technical Summary

Problems solved by technology

Therefore, this kind of contactor consumes more than 100 watts of electric energy due to the eddy current loss of the wire package, which not only wastes a lot of electric energy in vain, but also emits a large humming sound, forming a large noise pollution

[0004] In the prior art, there are also individual products using AC and DC contactor control modules, but these products need to prepare various types of power-saving controllers in order to cope with different application environments, and the working range, electrical performance and stability still need to be improved The place

[0005] In addition, all kinds of contactors used in the prior art are almost powered by AC220V or AC380V 50Hz. Since the alternating current is composed of sine waves with positive and negative symmetrical initial phases, amplitudes, and frequencies, and the sine waves have zero-crossing points, the AC contactor itself is an inductive load, the power factor is low

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