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H-bridge converter module driving circuit and modular multilevel converter

A technology of commutation modules and drive circuits, which is applied in the direction of electrical components, output power conversion devices, etc., can solve problems such as inability to flexibly change drive functions, and achieve the effects of facilitating modular design, reducing requirements, and reducing workload

Inactive Publication Date: 2017-08-18
CHINA EPRI SCIENCE & TECHNOLOGY CO LTD +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (3) When the driving parameters change or the output function of the H-bridge power module changes, its driving function cannot be changed flexibly

Method used

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  • H-bridge converter module driving circuit and modular multilevel converter
  • H-bridge converter module driving circuit and modular multilevel converter
  • H-bridge converter module driving circuit and modular multilevel converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The two first drive pulse signals A and B are both high potential signals and the expected output voltage is E, where E>0, by figure 1 The H-bridge commutation structure shown can be determined to output voltage E when IGBT1 and IGBT4 are turned on and IGBT2 and IGBT3 are blocked. Therefore, the potential of the third driving pulse signal of IGBT1 and IGBT4 is the same as that of the two first driving pulse signals A and The potentials of B are the same, and the potentials of the third driving pulse signals of IGBT2 and IGBT3 are opposite to those of the two first driving pulse signals A and B.

Embodiment 2

[0040] Embodiment 2: the first driving pulse signal A is a high potential signal, the first driving pulse signal B is a low potential signal, and the desired output voltage is 0. Depend on figure 1The H-bridge commutation structure shown can be determined. When IGBT1 and IGBT2 are turned on and IGBT3 and IGBT4 are blocked, the output voltage can be 0. When IGBT1 and IGBT2 are blocked, IGBT3 and IGBT4 can also output voltage 0. Therefore, Embodiment 2 can include two situations: the first situation is: the potential of the third driving pulse signal of IGBT1 and IGBT2 is the same as the potential of the first driving pulse signal A, and the potential of the third driving pulse signal of IGBT3 and IGBT4 is the same as that of the first driving pulse signal A. The potential of a driving pulse signal B is reversed. The second situation is: the potential of the third driving pulse signal of IGBT1 and IGBT2 is opposite to that of the first driving pulse signal A, and the potential ...

Embodiment 3

[0041] Embodiment 3: the first driving pulse signal A is a low potential signal, the first driving pulse signal B is a high potential signal, and the desired output voltage is 0. Similar to Embodiment 2, Embodiment 3 may also include two cases: the first case is: the potential of the third drive pulse signal of IGBT1 and IGBT2 is the same as the potential of the first drive pulse signal A, and the third drive of IGBT3 and IGBT4 The potential of the pulse signal is opposite to that of the first drive pulse signal B. The second situation is: the potential of the third driving pulse signal of IGBT1 and IGBT2 is opposite to that of the first driving pulse signal A, and the potential of the third driving pulse signal of IGBT3 and IGBT4 is the same as that of the first driving pulse signal B.

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PUM

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Abstract

The invention provides an H-bridge converter module driving circuit comprising a drive pulse distribution module which communicates with a master controller and an H-bridge converter module through optical fibers. The drive pulse distribution module transmits a second pulse signal to respective power electronic devices of the H-bridge converter module according to a first pulse signal issued by the master controller and a desired output signal of the H-bridge converter module in order to drive the H-bridge converter module; wherein the first pulse signal comprises a stop pulse signal and two first drive pulse signals. Compared with the prior art, the H-bridge converter module driving circuit reduces the workload of the master controller and reduces a requirement for the operating performance of the master controller in an actual working condition. Further, after the desired output signal of the H-bridge converter module is changed, the drive pulse distribution module can automatically adjust the second pulse signal output by itself without modifying the control parameters of the master controller.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to an H-bridge converter module drive circuit and a modular multilevel converter. Background technique [0002] The H-bridge power module is a power module with an H-bridge structure composed of four power electronic devices. By sending driving pulses to each power electronic device in the H-bridge power module to block or conduct each power electronic device, the H-bridge power module is realized. regulation of output power, such as figure 1 As shown, the H-bridge power module may include power electronic devices IGBT1, IGBT2, IGBT3, IGBT4, and a DC capacitor C. At present, the driving circuit of the H-bridge power module mainly uses a main controller to directly send driving signals to the H-bridge power module, including 1 start-stop signal and 4 driving pulse signals, which is not conducive to the modular design of the H-bridge power module. In addition, the above-me...

Claims

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Application Information

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IPC IPC(8): H02M1/088
CPCH02M1/088
Inventor 王轩訾振宁魏孟刚喻劲松赵刚荆龙李进吴学智付永生燕翚王蓓蓓赵怡婷邱金辉杨飞田景辅于游刘君
Owner CHINA EPRI SCIENCE & TECHNOLOGY CO LTD