CN2577503Y - 中压变频器中单相桥式逆变器的过电压保护装置 - Google Patents

中压变频器中单相桥式逆变器的过电压保护装置 Download PDF

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Publication number
CN2577503Y
CN2577503Y CN 02210894 CN02210894U CN2577503Y CN 2577503 Y CN2577503 Y CN 2577503Y CN 02210894 CN02210894 CN 02210894 CN 02210894 U CN02210894 U CN 02210894U CN 2577503 Y CN2577503 Y CN 2577503Y
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China
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diode
thyristor
turnover
capacitor
phase bridge
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CN 02210894
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Inventor
楚子林
王建峰
王成新
尹汉斌
李寅
孙敬华
丁庆振
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Tianjin Electric Transmission Design And Research Institute
Harbin Jiuzhou Electric Co Ltd
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Tianjin Electric Transmission Design And Research Institute
Harbin Jiuzhou Electric Co Ltd
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Abstract

本实用新型公开一种中压变频器中单相桥式逆变器的过电压保护装置。采用简单的线路,对单相桥逆变器因负载电流充电造成的过电压提供可靠、有效的保护。适用于单元串联型中压变频器的单相桥式逆变器过压保护。本实用新型是由转折二极管V11与电阻R1的串联电路和电阻R2与电容C的并联电路、二极管V2组成,其特征是用晶闸管V10的过电压使转折二极管V11转折,再利用转折后流过V11的电流去触发V10使其导通,流过负载电流。转折二极管V11的负极和二极管V2的正极与电阻R2与电容C的并联电路一端相接,转折二极管V11与电阻R1串联电路另一端接触发晶闸管V10的阳极,二极管V2的负极接晶闸管的门极,电阻R2与电容C的并联电路另一端接触发晶闸管的阴极。

Description

中压变频器中单相桥式逆变器的过电压保护装置
技术领域
本实用新型是用于逆变器的电压保护电路,属于电子技术领域。
技术方案本实用新型目的是公开一种中压变频器中单相桥式逆变器的过电压保护装置。本实用新型采用简单的线路,对单相桥逆变器因负载电流充电造成的过电压提供可靠、有效的保护。适用于单元串联型中压变频器的单相桥式逆变器过压保护。
本实用新型是由转折二极管V11与电阻R1的串联电路和电阻R2与电容C的并联电路、二极管V2组成,其特征是用晶闸管V10的过电压使转折二极管V11转折,再利用转折后流过V11的电流去触发V10使其导通,流过负载电流。转折二极管V11的负极和二极管V2的正极与电阻R2与电容C的并联电路一端相接,转折二极管V11与电阻R1串联电路另一端接单相桥式逆变器的触发晶闸管V10的阳极,二极管V2的负极接单相桥式逆变器的触发晶闸管V10的门极,电阻R2与电容C的并联电路另一端接单相桥式逆变器的触发晶闸管V10的阴极。
其中R1可以是具有限流功能的电子元器件。V11是具有转折特性的电子器件。V2是具有一定压降的电子元器件。R2、C是具有抗干扰功能的电子元器件的组合。V10的门极和阴极附加具有抗干扰功能的电子元器件组合。
图2为本实用新型实施例电路图。

Claims (2)

1.一种中压变频器中单相桥式逆变器的过电压保护装置,是由转折二极管V11与电阻R1的串联电路和电阻R2与电容C的并联电路、二极管V2组成,其特征是用晶闸管V10的过电压使转折二极管V11转折,再利用转折后流过V11的电流去触发V10使其导通,流过负载电流,转折二极管V11的负极和二极管V2的正极与电阻R2与电容C的并联电路一端相接,转折二极管V11与电阻R1串联电路另一端接单相桥式逆变器的触发晶闸管V10的阳极,二极管V2的负极接单相桥式逆变器的触发晶闸管V10的门极,电阻R2与电容C的并联电路另一端接单相桥式逆变器的触发晶闸管V10的阴极。
2.如权利要求1所述的中压变频器中单相桥式逆变器的过电压保护装置,其特征是所述的R1是任何具有限流功能的电子元器件,V11是具有转折特性的电子器件,V2是具有一定压降的电子元器件,R2、C是具有抗干扰功能的电子元器件的组合,V10的门极和阴极附加具有抗干扰功能的电子元器件组合。
CN 02210894 2002-03-25 2002-03-25 中压变频器中单相桥式逆变器的过电压保护装置 Expired - Lifetime CN2577503Y (zh)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8619446B2 (en) 2012-04-27 2013-12-31 Rockwell Automation Technologies, Inc. Cascaded H-bridge (CHB) inverter level shift PWM with rotation
US9325252B2 (en) 2014-01-13 2016-04-26 Rockwell Automation Technologies, Inc. Multilevel converter systems and sinusoidal pulse width modulation methods
US9425705B2 (en) 2012-08-13 2016-08-23 Rockwell Automation Technologies, Inc. Method and apparatus for bypassing cascaded H-bridge (CHB) power cells and power sub cell for multilevel inverter
US9520800B2 (en) 2014-01-09 2016-12-13 Rockwell Automation Technologies, Inc. Multilevel converter systems and methods with reduced common mode voltage
US9559541B2 (en) 2015-01-15 2017-01-31 Rockwell Automation Technologies, Inc. Modular multilevel converter and charging circuit therefor
US9748862B2 (en) 2015-05-13 2017-08-29 Rockwell Automation Technologies, Inc. Sparse matrix multilevel actively clamped power converter
US9787213B2 (en) 2013-03-18 2017-10-10 Rockwell Automation Technologies, Inc. Power cell bypass method and apparatus for multilevel inverter
US9812990B1 (en) 2016-09-26 2017-11-07 Rockwell Automation Technologies, Inc. Spare on demand power cells for modular multilevel power converter
US10158299B1 (en) 2018-04-18 2018-12-18 Rockwell Automation Technologies, Inc. Common voltage reduction for active front end drives

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8619446B2 (en) 2012-04-27 2013-12-31 Rockwell Automation Technologies, Inc. Cascaded H-bridge (CHB) inverter level shift PWM with rotation
US9425705B2 (en) 2012-08-13 2016-08-23 Rockwell Automation Technologies, Inc. Method and apparatus for bypassing cascaded H-bridge (CHB) power cells and power sub cell for multilevel inverter
US10305368B2 (en) 2012-08-13 2019-05-28 Rockwell Automation Technologies, Inc. Method and apparatus for bypassing Cascaded H-Bridge (CHB) power cells and power sub cell for multilevel inverter
US9912221B2 (en) 2012-08-13 2018-03-06 Rockwell Automation Technologies, Inc. Method and apparatus for bypassing cascaded h-bridge (CHB) power cells and power sub cell for multilevel inverter
US9787213B2 (en) 2013-03-18 2017-10-10 Rockwell Automation Technologies, Inc. Power cell bypass method and apparatus for multilevel inverter
US9520800B2 (en) 2014-01-09 2016-12-13 Rockwell Automation Technologies, Inc. Multilevel converter systems and methods with reduced common mode voltage
US9325252B2 (en) 2014-01-13 2016-04-26 Rockwell Automation Technologies, Inc. Multilevel converter systems and sinusoidal pulse width modulation methods
US9559541B2 (en) 2015-01-15 2017-01-31 Rockwell Automation Technologies, Inc. Modular multilevel converter and charging circuit therefor
US9748862B2 (en) 2015-05-13 2017-08-29 Rockwell Automation Technologies, Inc. Sparse matrix multilevel actively clamped power converter
US9812990B1 (en) 2016-09-26 2017-11-07 Rockwell Automation Technologies, Inc. Spare on demand power cells for modular multilevel power converter
US10158299B1 (en) 2018-04-18 2018-12-18 Rockwell Automation Technologies, Inc. Common voltage reduction for active front end drives

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