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Drive circuits for thyristors and circuits for AC modules

A technology of driving circuit and driving module, which is applied in the field of communication to achieve the effect of improving reliability, realizing opening, and miniaturizing circuit design

Active Publication Date: 2018-09-07
HUAWEI DIGITAL POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the thyristor is connected to the output of the boost circuit, the current is intermittent, so how to ensure the stable and reliable conduction of the thyristor is an urgent problem to be solved.

Method used

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  • Drive circuits for thyristors and circuits for AC modules
  • Drive circuits for thyristors and circuits for AC modules
  • Drive circuits for thyristors and circuits for AC modules

Examples

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0028] According to the ETS 300132-1 standard, the AC input power supply must meet a certain input surge current limit. Such as figure 1 As shown, when the input is powered on, the bus capacitor C12 is charged through the current limiting resistor R11, the rectifier bridge VD0, the power factor correction (Power FactorCorrection, PFC) inductor L1 and the boost diode D1. When the charging is completed, the relay K1 is closed. Complete the input soft st...

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PUM

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Abstract

The invention provides a thyristor drive circuit which comprises a drive module, a current limiting unit, an isolation current conversion unit and a voltage doubler rectifier. The drive module is used for generating a drive signal, and is connected with the primary side of the isolation current conversion unit. The current limiting unit is connected in series between the drive module and the isolation current conversion unit. The secondary side of the isolation current conversion unit is connected with a first input end and a second input end of the voltage doubler rectifier. A first output end of the voltage doubler rectifier is connected with a control electrode G of a thyristor. A second output end of the voltage doubler rectifier is connected with the cathode K of the thyristor. According to the invention, the circuit design can be miniaturized, and the reliability can be improved.

Description

technical field [0001] Embodiments of the present invention relate to the communication field, and more specifically, relate to a driving circuit for a thyristor and a circuit for an AC module. Background technique [0002] SCR (Silicon Controlled Rectifier, SCR) is the abbreviation of silicon controlled rectifier element. It is a high-power semiconductor device with three PN junctions and a four-layer structure. It can also be called a thyristor. Thyristor has the characteristics of small size, relatively simple structure, and strong function, and is one of the more commonly used semiconductor devices. Thyristors are widely used in various electronic equipment and electronic products, and are mostly used as controllable rectification, inverter, frequency conversion, voltage regulation, non-contact switch, etc. [0003] According to the ETS 300 132-1 standard, the AC input power supply must meet a certain input surge current limit. One of the more ideal solutions is to use...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/155
Inventor 樊晓东
Owner HUAWEI DIGITAL POWER TECH CO LTD
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