Modular multi-level structure impulse voltage generating device and method thereof

A modular multi-level, impulse voltage technology, applied in the direction of electric pulse generator circuit, energy storage element to generate pulses, etc., can solve the problems of poor controllability and achieve the effect of convenient expansion and flexible control

Active Publication Date: 2017-08-18
WUHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The structure of the traditional impulse voltage generator is to boost the voltage through the AC transformer, charge the capacitor in parallel, and the ball gap triggers the capaci

Method used

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  • Modular multi-level structure impulse voltage generating device and method thereof
  • Modular multi-level structure impulse voltage generating device and method thereof
  • Modular multi-level structure impulse voltage generating device and method thereof

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Embodiment Construction

[0031] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] Examples of the described embodiments are shown in the drawings, wherein like or similar reference numerals designate like or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0033] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. They are examples only and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the pur...

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Abstract

The invention belongs to the power and electronics technical field and relates to a modular multi-level structure impulse voltage generating device and a method thereof. The device comprises a direct-current power source, a modular multi-level converter and a tested object; the modular multi-level converter is connected with the direct-current power source; and the tested object is connected onto the modular multi-level converter. The impulse voltage generating method includes the following steps of: step 1, charging: before impulse voltage is generated, sub-module capacitors are charged when the tested object is electrically connected with the modular multi-level converter; and step 2, impulse voltage generation: the modulation signals of upper half bridge arms and lower half bridge arms are compared with step waves, so that the control signals of each sub-module can be obtained, and so that required impact voltages can be generated under control. According to the device, full-controlled switching devices are adopted, a modular structure is adopted, and therefore, the device has excellent control performance in an impact voltage generating process and can generate impact voltages of arbitrary waveforms.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and in particular relates to a modular multilevel structure impulse voltage generating device and a method thereof. Background technique [0002] Experimental techniques are extremely important to the natural sciences. Phenomena such as lightning and operating overvoltage have a great impact on the operation of the power grid. In order to maintain the safe operation of the power grid, each equipment in the power grid should be able to withstand the corresponding disturbance under the impulse voltage. However, some mechanisms of dielectric breakdown are not very clear at present. In order to study the physical phenomena of various media and devices under impulse voltage, it is often necessary to rely on experiments to solve them. At this time, the impulse voltage generator becomes particularly important. . [0003] The impulse voltage generator is a high-voltage generating device that...

Claims

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Application Information

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IPC IPC(8): H02M9/04
CPCH03K3/57
Inventor 陈柏超薛钢杨雨桐田翠华费雯丽袁佳歆郭俊华周宇雄
Owner WUHAN UNIV
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