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Control device and method of bistable permanent-magnet vacuum circuit breaker rapid divide-shut brake

A permanent magnet vacuum and control device technology, applied in the direction of high-voltage air circuit breakers, circuits, electrical components, etc., can solve the problems of large capacitance voltage drop and the influence of induced current on the action, so as to reduce the peak value of discharge current and remove the influence of induced current , The effect of reducing the operating voltage

Inactive Publication Date: 2014-11-19
SOUTHEAST UNIV
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Problems solved by technology

[0003] Purpose of the invention: The present invention proposes a control device and method for quick opening and closing of a bistable permanent magnet vacuum circuit breaker, which solves the problem that the capacitance voltage drop is too large when the existing bistable operating mechanism operates, and the induced current affects the operation

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  • Control device and method of bistable permanent-magnet vacuum circuit breaker rapid divide-shut brake
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  • Control device and method of bistable permanent-magnet vacuum circuit breaker rapid divide-shut brake

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[0020] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0021] Such as figure 1 As shown, the device of the present invention includes a microprocessor module, a power module, a signal acquisition and processing module, a human-computer interaction module, a drive module, a PWM control module, a remote opening and closing control module, a communication module, and an external storage module. The computer interaction module is connected with the microprocessor module through the communication module, the drive module is conne...

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Abstract

The invention discloses a control device and method of a bistable permanent-magnet vacuum circuit breaker rapid divide-shut brake. The method comprises the following steps that a freewheeling diode is utilized for enabling the coils to be supplied with follow current, so that the coils can discharge to a corresponding discharge capacitor when switch tubes on the two sides of an opening coil or a closing coil are all turned off, and at the same time, the induced voltage generated by mutual inductance is counteracted with the negative voltage, namely, the voltage of a non-discharge voltage. According to the control device and method, the problem of the conventional bistable operating mechanism that the voltage drop of the capacitor is too big and the operation is influenced by the induced current is solved, the control voltage is reduced, the discharging peak current is reduced, the movement speed can be adjusted by the PWM drive control module according to requirements and the contact bounce is reduced, so that the operating characteristic is more in accordance with the arc resistance of the circuit breaker.

Description

technical field [0001] The invention relates to a control device and method for quick opening and closing of a bistable permanent magnet vacuum circuit breaker, belonging to the technical field. Background technique [0002] Due to its advantages of small size, simple structure, low failure rate and suitable for frequent operation, permanent magnet vacuum circuit breakers quickly occupied the medium voltage circuit breaker market and were widely used in power systems. Permanent magnet vacuum circuit breakers are divided into two types: monostable and bistable. The operating mechanism of the bistable permanent magnet vacuum circuit breaker includes two coils, the closing coil and the opening coil. Due to the mutual inductance of the coils, the The induced current has a greater influence. Traditional controllers overcome the influence of induced current by increasing the capacity of the capacitor or increasing the discharge voltage. The disadvantage of this is that the voltag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/666
Inventor 房淑华柳庆东黄允凯陈亚彬徐喆明林鹤云
Owner SOUTHEAST UNIV
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