Short-time delay high-gradient pulse amplifier

A high-steep, high-steep amplifier technology, applied in the field of short-delay high-steep pulse amplifiers, can solve the problems of increasing the cost and volume of the amplifier, achieve the effect of reducing leakage inductance and distributed capacitance, and increasing the steepness

Inactive Publication Date: 2015-02-04
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To obtain high-steep pulses, the generated pulses need to be steepened, which increases the cost and size of the amplifier

Method used

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  • Short-time delay high-gradient pulse amplifier
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  • Short-time delay high-gradient pulse amplifier

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Embodiment Construction

[0017] The embodiments of the present invention will be described in detail below.

[0018] Such as figure 1 As shown, the short-delay high-steep pulse amplifier of the present invention is composed of an isolation transformer GB, a rectifier circuit 2, an energy storage circuit 3, a pulse output circuit 4 and a thyristor control circuit 5.

[0019] Such as figure 2 As shown, the isolation transformer GB is connected to the power frequency AC power supply, and after isolation and transformation, it is connected to the rectification circuit. One output of the rectification circuit is connected to the energy storage circuit, and the other is connected to the thyristor control circuit. The output terminal of the energy storage circuit is connected to the pulse output circuit, and the output terminal of the thyristor control circuit is connected to the gate of the thyristor in the pulse output circuit.

[0020] The isolation transformer GB is followed by a rectifier circuit, an...

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Abstract

A short-time delay high-gradient pulse amplifier is formed by an isolation transformer, a rectifying circuit, an energy storage circuit, a pulse output circuit and a thyristor control circuit; the isolation transformer is connected with a power frequency alternating current power source and is connected with the rectifying circuit after isolation transformation; one output circuit of the rectifying circuit is connected with the energy storage circuit and the other circuit is connected with the thyristor control circuit; an output end of the energy storage circuit is connected with a pulse output circuit; an output end of the thyristor control circuit is connected with a thyristor control end in the pulse output circuit. According to the short-time delay high-gradient pulse amplifier, a thyristor is served as a capacitor discharging switch, a steep-sided pulse is generated by capacitor instant discharging, the steep-sided pulse generates a short-time delay high-gradient pulse is generated after being amplified through the pulse transformer, the leakage inductance and the distributed capacitance of the pulse transformer are reduced by reducing the number of turns of winding, or voltage at two ends of a charging capacitor in the energy storage circuit is improved by improving the voltage of the rectifying circuit after rectification, and the gradient of a pulse amplifier output pulse is increased.

Description

technical field [0001] The invention belongs to the technical field of high voltage test, in particular to a pulse amplifier with short time delay and high steepness. Background technique [0002] In order to test the insulation performance of high-voltage electrical equipment in the power system, it is necessary to conduct impulse voltage tests to simulate lightning overvoltage and operating overvoltage on high-voltage electrical equipment, and pulse amplifiers are often used. To obtain high-steep pulses, the generated pulses need to be steepened, which increases the cost and size of the amplifier. In order to improve the effect of the pulse amplifier, the present invention proposes an amplifier for generating pulses with short time delay and high steepness. Contents of the invention [0003] In order to overcome the shortcomings of the above-mentioned prior art, the present invention proposes a short-time-delay high-steep pulse amplifier capable of generating short-time...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M9/06
Inventor 傅正财李林锐陈天翔孙伟陈坚
Owner SHANGHAI JIAO TONG UNIV
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