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Power electronic combination device

A technology of power electronics and devices, which is applied in the field of power electronics combined devices, can solve problems such as the inability to realize AC and DC dual-use, and achieve the effects of simple structure, easy control, and convenient use

Inactive Publication Date: 2013-09-25
XJ ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a power electronic combination device to solve the problem that the existing power electronic devices cannot realize the dual use of AC and DC

Method used

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Embodiment Construction

[0011] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0012] The power electronic combination device of the present invention includes a current steering circuit and an IGBT transistor, the current steering circuit is a bridge circuit, and the connection point for connecting to the main circuit is provided at the connection point between the upper and lower bridge arms of the current steering circuit. The right and right bridge arms are respectively connected to diodes or thyristors, and the IGBT transistors are connected in parallel at both ends of the current steering circuit.

[0013] Such as figure 1 As shown, in this embodiment, the current steering circuit is composed of two thyristors VT1, VT2 and two diodes VD1, VD2 to form a bridge circuit. VT2 and the insulated gate bipolar transistor IGBT apply control signals to control the turn-on and turn-off of the combined device.

[0014] When the power electr...

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Abstract

The invention relates to a power electronic combination device which comprises a current guiding circuit and an IGBT, wherein the current guiding circuit is a bridge circuit. A terminal used for being connected with a main circuit in series is arranged between a series point between an upper bridge arm and a lower bridge arm. A left bridge arm and a right bridge arm are respectively connected into a diode or a thyristor. The IGBT is connected with the upper bridge arm and the lower bridge arm in series, wherein the upper bridge arm and the lower bridge arm are connected in series. Through triggering of the thyristor and controlling of switching-on or switching-off of the IGBT, the power electronic combination device can achieve the control over switching-on or switching-off of alternating current and direct current, and is convenient to use, simple in structure, low in price, and easy to control, and solves the problem that an existing power electronic device can not achieve dual-use of the alternating current and the direct current.

Description

technical field [0001] The invention relates to a power electronic combined device. Background technique [0002] Power electronics technology is a new technology born and developed in the second half of the 20th century. It is not only widely used in AC-DC power transmission and transformation devices in traditional power systems, but also widely used in various AC-DC motor speed regulation, material processing , communication equipment, computers and even various home appliances and other industrial fields. [0003] Power electronic devices are the core of power electronics technology. At present, common power electronic devices such as diodes, thyristors, and IGBTs can only perform on-off control of direct current, but cannot perform on-off control of alternating current. Although bidirectional thyristors have been successfully used in AC circuits, they cannot be used in DC circuits. Therefore, an AC and DC dual-purpose power electronic device has become an urgent probl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/00
Inventor 姚为正马俊民黄永瑞马仪成
Owner XJ ELECTRIC