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A negative voltage bootstrap drive circuit for a three-level T-type common-source converter

A technology of bootstrapping drive circuit and drive circuit, which is applied in the direction of converting AC power input to DC power output, electrical components, output power conversion devices, etc., and can solve problems such as inability to realize negative voltage shutdown, multiple independent DC power supplies, etc. Achieve the effects of improving anti-interference ability, reducing device damage, and reducing equipment volume

Active Publication Date: 2019-08-27
NORTHEASTERN UNIV LIAONING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The problem to be solved by the present invention is to propose a negative voltage bootstrap drive circuit for a three-level T-type common-source converter, which is used to solve the problem that the traditional three-level T-type common-source drive circuit uses too many independent DC Defects of power supply and inability to realize negative voltage shutdown

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  • A negative voltage bootstrap drive circuit for a three-level T-type common-source converter
  • A negative voltage bootstrap drive circuit for a three-level T-type common-source converter
  • A negative voltage bootstrap drive circuit for a three-level T-type common-source converter

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Embodiment Construction

[0061] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0062] All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0063] Traditional three-level T-type common-source converter drive circuit, such as figure 2 shown. The three-level T-type common source converter includes A phase, B phase and C phase. Each T-type bridge arm has four insulated gate bipolar transistors. Since the three phases of the three-level topology ...

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Abstract

The invention relates to a negative voltage bootstrap drive circuit for a three-level T-type common source converter, which includes four bootstrap drives for driving insulated gate bipolar transistors of the T-type common source converter. circuit, and four independent DC power supplies that provide power support for the bootstrap drive circuit. Compared with traditional drive circuits, the present invention reduces the number of independent DC power supplies used, reduces the size of the equipment, uses fewer components to achieve negative voltage turn-off of IGBT, and greatly reduces the cost of the traditional three-level T-type common source. The device damage caused by the inability of the converter drive circuit to realize negative voltage shutdown improves the anti-interference ability of the equipment.

Description

technical field [0001] The invention relates to the technical field of power electronic conversion, in particular to a negative voltage bootstrap drive circuit for a three-level T-type common-source converter. Background technique [0002] In recent years, high-power power converters have been widely used in power electronic equipment such as frequency conversion and speed regulation of high-voltage and large-capacity AC motors, operation control of large wind turbines, and photovoltaic inverters. The application of three-level T-type common-source topology can effectively improve the efficiency and performance indicators of high-power power conversion systems, but it also puts forward higher requirements for the stable and safe operation of the system. A stable and reliable IGBT driver is designed Circuits are especially important. In addition, the drive circuit of the traditional three-level T-type common-source converter needs seven independent DC power supplies, while t...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/088H02M7/483
Inventor 宋崇辉王堃刁乃哲孙先瑞徐涛杨明韩涛
Owner NORTHEASTERN UNIV LIAONING