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A damped oscillatory wave generation circuit, method and damped oscillatory generator

A damped oscillatory wave and generation method technology, applied in the field of damped oscillator generators and damped oscillatory wave generating circuits, can solve problems such as the lack of reliable generation of damped oscillatory waves, achieve improved accuracy, simple circuit structure and parameter calculation methods, Accurate effect

Active Publication Date: 2022-04-19
ELECTRIC POWER RES INST OF EAST INNER MONGOLIA ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The inventors of the present disclosure found in research that the existing damped oscillatory wave generators all use frequencies of 0.1M and 1M. After the update of the immunity test standard, the frequency of the damped oscillatory wave has also been greatly improved, increasing the 3M, 10M and 30MHz assessment waveforms, in the actual measurement, it is also found that the switching operation will generate high-frequency disturbances above 1M on the secondary equipment, so higher frequency damping must be used in the immunity test of the secondary equipment in the future Oscillatory wave generators, however, there is currently no reliable way to generate damped oscillating waves at higher frequencies such as 3M, 10M, and 30MHz

Method used

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  • A damped oscillatory wave generation circuit, method and damped oscillatory generator
  • A damped oscillatory wave generation circuit, method and damped oscillatory generator
  • A damped oscillatory wave generation circuit, method and damped oscillatory generator

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Embodiment 1

[0044] Such as figure 2 As shown, Embodiment 1 of the present disclosure provides a damped oscillatory wave generating circuit, including a DC power supply E, a first resistor R 1 , the second resistor R 2 , the first capacitor C, the first inductance L, the first switch K 1 and the second switch K 2 , the positive output terminal of the DC power supply E passes through the first resistor R 2 with the first switch K 1 Connected at one end, the first switch K 1 The other end is divided into two paths, one path is connected to the positive pole of the first capacitor C, the negative pole of the first capacitor C is connected to the negative pole of the DC power supply E, and the other path passes through the second switch K connected in series in turn 2 , the first inductor L and the second resistor R 2 Then connect to the negative pole of the first capacitor C, the negative pole of the DC power supply E and the negative pole of the first capacitor C are both grounded.

...

Embodiment 2

[0047] Such as image 3 As shown, Embodiment 2 of the present disclosure discloses a method for generating a damped oscillatory wave;

[0048] Utilize the damped oscillatory wave generation circuit described in embodiment 1;

[0049] After confirming that the DC power supply is connected, switch K 1 opening time, K 2 close at the same time;

[0050] The DC power supply voltage, the required oscillation frequency, the oscillation coefficient, and the value of the second resistor are preset. Since the value of the first resistor does not affect the peak voltage across the first inductor, the first resistor can be any value, and The value of the second resistor determines the size of the first inductance and the first capacitor in the RLC circuit and the peak value of the damped oscillation wave generated at both ends of the second resistor;

[0051] Determine the values ​​of the first capacitance and the first inductance according to the required oscillation wave frequency, th...

Embodiment 3

[0089] Embodiment 3 of the present disclosure discloses a method for generating a 3MHz damped oscillatory wave, specifically:

[0090] Using Matlab software for circuit simulation to generate a 3MHz damped oscillatory wave with a voltage level of 0.5kV.

[0091] Assume that the switch action time is 1μs after the power is turned on, the power supply voltage is 8kV, the frequency f is 3MHz, the coefficient k=0.2, and the resistance R 2 =10Ω, then L and C are respectively:

[0092]

[0093] The resistance R is simulated in Matlab 2 The voltage waveforms at both ends are shown in Figure 4(a) and Figure 4(b), from which it can be concluded that at this time the second resistor R 2 A damped oscillatory wave with a peak value of 0.48kV and a frequency of 3MHz is generated at both ends.

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Abstract

The present disclosure provides a damped oscillation wave generation circuit, method and damped oscillation generator, specifically including a DC power supply, a first resistor, a second resistor, a first capacitor, a first inductor, a first switch and a second switch; a DC power supply After being turned on, the first switch opens at the first preset moment, and the second switch closes at the first preset moment; the DC power supply voltage, the required oscillation wave frequency, the oscillation coefficient and the value of the second resistance are preset, Determine the values ​​of the first capacitor and the first inductance according to the required oscillatory wave frequency, the oscillation coefficient and the value of the second resistor; a damped oscillatory wave whose frequency is the required oscillatory wave frequency is obtained at both ends of the second resistor; the present disclosure The above content can reliably and efficiently generate damped oscillatory waves with higher frequencies than before, such as 3MHz, 10MHz, and 30MHz high-frequency damped oscillatory waves, thereby realizing higher frequency immunity testing.

Description

technical field [0001] The present disclosure relates to the field of electromagnetic compatibility, in particular to a damped oscillation wave generation circuit, method and damped oscillation generator. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] At the moment of switch operation, the substation will generate an electromagnetic disturbance waveform similar to the damped oscillatory wave, which is coupled to the secondary circuit through conduction, and can even interfere with the output signal of the secondary equipment. In order to ensure that the secondary equipment can work normally in such a complex electromagnetic environment, it is necessary to conduct a damped oscillatory wave immunity test during the production process. The existing immunity assessment standard GB / T 17626.12-1998 defines the standard damped oscillatory wav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00G01R1/20
CPCG01R31/001G01R1/20
Inventor 邱桂中钱文晓王永红肖冰秘立鹏张凯冯赛周丽红张婕妤
Owner ELECTRIC POWER RES INST OF EAST INNER MONGOLIA ELECTRIC POWER