Switch module, converter and electrical energy conversion device

A technology of switch module and electronic switch, which is applied in the direction of electronic switch, conversion equipment for intermediate conversion to DC, irreversible AC power input conversion to DC power output, etc., which can solve the problem of reducing the clamping effect and reducing the active clamp The effectiveness of the bit circuit 90, the low impedance of the transistor Q15, etc., to achieve the effect of improving reliability

Inactive Publication Date: 2015-06-10
GENERAL ELECTRIC CO
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Obviously, because the impedance of the turned-on transistor Q15 is very low, most of the current Iz of the Zener diode Z10 is bypassed by the transistor Q15, so that the cur

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  • Switch module, converter and electrical energy conversion device
  • Switch module, converter and electrical energy conversion device
  • Switch module, converter and electrical energy conversion device

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[0043] One or more specific embodiments of the present invention will be described below. First of all, it should be pointed out that, in the process of describing these implementations, for the sake of concise description, it is impossible for this specification to describe all the features of the actual implementations in detail. It should be understood that, in the actual implementation process of any embodiment, just like in the process of any engineering project or design project, in order to achieve the developer's specific goals, or to meet system-related or business-related constraints , often a variety of specific decisions are made, and this changes from one implementation to another. In addition, it will be appreciated that while such development efforts may be complex and lengthy, the technology disclosed in this disclosure will be Some design, manufacturing or production changes based on the content are just conventional technical means, and should not be interpr...

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Abstract

The invention relates to a switch module, a converter and an electrical energy conversion device. The switch module comprises at least two electronic switches and at least two overvoltage protection circuits, wherein the electronic switches are serially connected to one another; the overvoltage protection circuits are electrically coupled to the electronic switches respectively; each overvoltage protection circuit comprises a clamping unit and a protecting unit; each clamping unit is used for providing a clamping voltage to the corresponding electronic switch when voltages at two ends of the corresponding electronic switch are greater than a first preset voltage; and each protecting unit is used for switching on the corresponding electronic switch when the voltages at two ends of the corresponding electronic switch are greater than a second preset voltage. Each electronic switch can be subjected to double overvoltage protection by the corresponding clamping unit and the corresponding protecting unit, and the reliability is improved. The invention also provides a converter comprising the switch module and an electrical energy conversion device comprising the switch module.

Description

technical field [0001] The embodiments disclosed in the present invention relate to a switch module, a converter and a power conversion device, and in particular to a switch module, a converter and a power conversion device with a new overvoltage protection circuit. Background technique [0002] A converter is generally used as an energy conversion device to convert one form of energy into another form of energy. For example, a multi-level inverter as a type of converter usually includes several phase circuits (corresponding to multi-phase AC output), each phase circuit includes two switching units, and the switches in the above-mentioned phase circuits are controlled by an appropriate control system The unit can be turned on or off to realize the function of converting DC power to AC power. [0003] For some AC motors with high voltage requirements, such as high voltage water pumps, high voltage compressors and other equipment, each switching unit on the applied inverter w...

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Application Information

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IPC IPC(8): H03K17/08H02M5/40H02M7/48H02M7/12
Inventor 张帆吴涛张颖奇沈捷秦来贵张颖
Owner GENERAL ELECTRIC CO
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