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Current switching device for mutual inductor with direct-current relay

A technology of DC relay and current switching, applied in the direction of output power conversion device, circuit device, emergency protection circuit device, etc., can solve problems such as easy damage and inconvenience

Pending Publication Date: 2021-02-02
福建广通机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, it is inconvenient to use the manual control method in actual use. If electronic circuit control is used, it will be easily damaged when the electromagnetic pulse is attacked. Therefore, a current switching device that resists pulse interference is needed

Method used

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  • Current switching device for mutual inductor with direct-current relay
  • Current switching device for mutual inductor with direct-current relay
  • Current switching device for mutual inductor with direct-current relay

Examples

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Embodiment 1

[0044] Please refer to figure 1 , Embodiment 1 of the present invention is:

[0045] A current switching device with a transformer with a DC relay provided by the present invention includes a transformer CT, a piezoresistor RV, a rectifier bridge D, a capacitor C and a DC relay J; the main current of the generator penetrates the transformer CT once As the primary coil of the transformer CT, the secondary coil of the transformer CT is electrically connected to the DC relay J through the piezoresistor RV, the rectifier bridge D, and the capacitor C in sequence. Between the capacitor C and the DC relay J, there are resistors R1 and R2 connected in parallel. The resistance of the resistor R1 is 0.5-3KΩ; Current, because the voltage difference between the DC relay pull-in and release is large; adjusting R2 can reduce the voltage at both ends of the DC relay J after the DC relay J is pull-in, that is, the released transformer CT current can be changed close to the pull-in current. ...

Embodiment 2

[0048] Please refer to figure 1 , the second embodiment of the present invention is:

[0049] On the basis of the first embodiment above, the piezoresistor RV is arranged close to the transformer CT, and the length of the wire between the piezoresistor RV and the transformer CT is less than a preset threshold. The preset threshold is 5cm. During installation, the CT secondary wire of the transformer should be as close as possible to the varistor RV, that is, the lead wire between the CT secondary wire of the transformer and the varistor RV should be as short as possible, generally less than 5cm, which can effectively reduce the amplitude of pulse interference.

Embodiment 3

[0050] Please refer to figure 2 , Embodiment three of the present invention is:

[0051] On the basis of the first embodiment above, it also includes an electric mechanism, a tension spring and a speed regulating mechanism of the oil machine; the DC relay J is connected to the electric mechanism, and the electric mechanism is connected to the speed regulating mechanism of the oil machine through a tension spring. The electric mechanism is an electromagnet or a control motor. The electric mechanism drives the oil engine speed regulating mechanism through the tension spring to change the oil engine speed, and when the electric mechanism operates, the speed increases. After the DC relay J is closed, it is connected, and the motor mechanism is controlled by a normally open contact, otherwise, the motor mechanism is controlled by a normally closed contact.

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Abstract

The invention relates to the technical field of generators, in particular to a current switching device for a mutual inductor with a direct-current relay. The device is composed of a mutual inductor CT, a piezoresistor RV, a rectifier bridge D, a capacitor C and a direct-current relay J. The main current of a generator penetrates into the primary side of the mutual inductor CT to serve as a primary coil of the mutual inductor CT, and a secondary coil of the mutual inductor CT is electrically connected with the direct-current relay J through the piezoresistor RV, the rectifier bridge D and thecapacitor C in sequence. The mutual inductor CT and the direct-current relay J are applied to control over a generator set to replace manual control over the generator set, meanwhile, the piezoresistor RV is arranged in front of the rectifier bridge D, the capacitor C and the direct-current relay J to limit the voltage of the secondary side of the mutual inductor CT within a certain range, and therefore the rectifier bridge D and the capacitor C are protected. Therefore, the problem of the voltage regulation rate of the generator is solved, and the anti-pulse interference effect is achieved.

Description

technical field [0001] The invention relates to the technical field of generators, in particular to a current switching device with a transformer and a DC relay. Background technique [0002] In modern warfare, electromagnetic pulse (EMP) weapon is a new type of offensive weapon, which mainly includes nuclear electromagnetic pulse and non-nuclear electromagnetic pulse. The nuclear electromagnetic pulse is very destructive. Wherever it goes, electronic, electric, photoelectric, microwave and communication equipment will be destroyed. Even electrical equipment without power or communication equipment hidden in underground bunkers will be broken down or burned out. . Because nuclear EMP is a nuclear weapon and cannot be easily used, more attention has been paid to non-nuclear EMP weapons, such as EMP bombs, which can cause large-scale partial blackouts. In modern warfare, different degrees of electromagnetic attack can accomplish many important combat tasks without causing la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P9/00H02H9/04H02H7/16H02M1/32
CPCH02H7/16H02H9/045H02M1/32H02P9/00
Inventor 刘芳彪
Owner 福建广通机电科技有限公司