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A noise reduction and energy saving device for an AC contactor electromagnetic coil

A technology of AC contactors and electromagnetic coils, which is applied in transformer/inductor circuits and other directions, and can solve problems such as insufficient stability

Pending Publication Date: 2019-01-04
金嘉宏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the energy-saving effect of "an AC contactor DC operation energy-saving device with protection function" invented by myself is better than that of foreign technologies and has protection functions, its operation stability is still insufficient.

Method used

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  • A noise reduction and energy saving device for an AC contactor electromagnetic coil
  • A noise reduction and energy saving device for an AC contactor electromagnetic coil

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Embodiment Construction

[0014] The AC contactor is equipped with a noise reduction and energy-saving device for the electromagnetic coil of the AC contactor. After the device does not change the coil, the 220V AC is rectified by the rectifier diode D1 half-wave rectifier at startup, and reaches the anode of the thyristor SCR through the coil J. One end of the starting resistor R1 of the silicon-controlled SCR triggers the conduction of the silicon-controlled SCR after being stepped down by the starting resistor R1 of the silicon-controlled SDR to realize full-voltage starting. At the same time the voltage is charged through the diode

[0015] One way of D2 charges the energy storage capacitor C1, and the other way charges the delay capacitor C2 through the resistor R3. When the delay capacitor is fully charged, it triggers the conduction of the transistor Q3, thereby rapidly lowering the gate voltage of the thyristor SDR. Make it below the trigger point, when the voltage is a negative half cycle, the...

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Abstract

A noise reduction and energy-saving device for an AC contactor magnetic coil is provided, for a device that needs to change the coil, the device is characterized in that on the basis of the original coil, a coil with several times the number of turns of the original coil is added (the coil diameter can be much smaller than the original coil because the current is lower than the original current mate). The coil can be embedded in the AC contactor, and only the electromagnetic coil is modified, the other parts are unchanged, saving energy by 95%, running very stably, and achieving a protective effect on the contactor.

Description

technical field [0001] The invention belongs to an additional device for energy saving, noise reduction and protection of an AC electromagnetic coil in a power system. Background technique [0002] AC electromagnetic coil is a power component widely used in power and production systems. The typical application is the application in AC contactors. There are large noises and large power losses during use. A better way to solve the above problems is to make it run in DC, but the AC coil needs a switching device for starting and running in order to run in DC. At present, this technology is available in foreign countries and has been widely used, but there is no such technology application in China. Although the energy-saving effect of "an AC contactor DC operation energy-saving device with protection function" invented by myself is better than foreign technology and has protection function, its operation stability is still insufficient. Contents of the invention [0003] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/42
CPCH01F27/42
Inventor 金嘉宏
Owner 金嘉宏