Alternating current contactor and anti-interference electricity intelligent electronic control device thereof
A technology of electronic control devices and AC contactors, which is applied to circuits, relays, electrical components, etc., to achieve the effects of avoiding arc welding, reducing contact wear, and reducing damage
Active Publication Date: 2021-02-23
WENZHOU UNIVERSITY
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide an AC contactor and its anti-swaying intelligent electronic control device, which can avoid the problem of tripping of the existing AC contactor due to an accidental power failure exceeding a predetermined time limit, so as to avoid swaying electricity. To maintain the purpose of continuous production without stopping
Method used
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Embodiment Construction
[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0028] Such as figure 1 and figure 2 As shown, in Embodiment 1 of the present invention, an AC contactor anti-swaying intelligent electronic control device is provided, which is used on an AC contactor (not shown), including a rectifier module, a power module, an energy storage module, Grid voltage detection circuit, anti-shake delay circuit and micro control unit; wherein,
[0029] The input terminal of the rectifier module is connected to the three-phase four-wire power grid connected to the main contact input terminal of the AC contactor, and the first output terminal is connected to the coil input terminal of the AC contactor, which is used to convert the AC power of the grid into DC power and Provide operating voltage for the coil of the AC contactor; amon...
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The invention provides an anti-interference electricity intelligent electronic control device of an alternating current contactor. The anti-interference electricity intelligent electronic control device comprises a rectification module, a power supply module, an energy storage module, a power grid voltage detection circuit, an anti-interference electricity time delay circuit and a micro-control unit. The rectification module realizes AC-DC conversion and provides an operation voltage for a contactor coil. The power grid voltage detection circuit collects a direct current output by the rectification module in real time. The power supply module supplies power and charges the energy storage module. The micro-control unit receives a direct-current voltage collected in real time and sends out acorresponding instruction after judging that the direct-current voltage is lower than a preset fluctuation threshold voltage. The energy storage module receives the power supply instruction, takes over power supply and provides electric energy for an anti-interference electricity delay circuit; and the anti-interference electricity delay circuit works after receiving a starting instruction, and forwards the electric energy of the energy storage module to an alternating current contactor operating coil to ensure that the main contact is continuously attracted. By implementing the invention, the problem that an existing alternating-current contactor is tripped when the accident power failure exceeds a preset time limit is avoided so that the aim of avoiding interference electricity to keepcontinuous production without shutdown is fulfilled.
Description
technical field [0001] The invention relates to the technical field of AC contactors, in particular to an AC contactor and an anti-swaying intelligent electronic control device thereof. Background technique [0002] AC contactor is a control appliance widely used in the field of low-voltage power distribution and automatic control for frequent on-off circuits. However, there is no intelligent control device on the existing AC contactors to avoid instantaneous voltage loss and power loss (called swaying electricity) in the power supply system due to lightning strikes, line short-circuit grounding, and heavy load impacts, so as to keep the AC contactors from disconnecting. buckle, so the existing AC contactor cannot be applied to continuous production lines such as petroleum, chemical industry, and steel. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an AC contactor and its anti-swaying intelligent electronic co...
Claims
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IPC IPC(8): H01H47/04H01H47/22H01H47/32
CPCH01H47/043H01H47/223H01H47/32
Inventor 赵升郭凤仪朱翔鸥吴桂初张正江舒亮
Owner WENZHOU UNIVERSITY