CN201226498Y - 一种具有在线双机热备份功能的四桥臂电力逆变器 - Google Patents

一种具有在线双机热备份功能的四桥臂电力逆变器 Download PDF

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CN201226498Y
CN201226498Y CNU2008201177511U CN200820117751U CN201226498Y CN 201226498 Y CN201226498 Y CN 201226498Y CN U2008201177511 U CNU2008201177511 U CN U2008201177511U CN 200820117751 U CN200820117751 U CN 200820117751U CN 201226498 Y CN201226498 Y CN 201226498Y
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brachium pontis
leg
inversion units
power inverter
inversion
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耿加民
姚玉海
仝云峰
张宏杰
张琳琳
何民
宋兴武
袁平
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AVIC Harbin Dongan Engine Group Co Ltd
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AVIC Harbin Dongan Engine Group Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

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Abstract

本实用新型涉及一种具有在线双机热备份功能的四桥臂电力逆变器。逆变器由两套元件参数相同的四桥臂逆变单元、两个固态电子开关和两个控制器组成，四桥臂逆变单元的直流电压正极端子经固态电子开关与四桥臂的正极连接，四桥臂逆变单元的直流电压负极端子直接与四桥臂的负极连接。本实用新型采用两套元件参数相同的四桥臂逆变单元、两个固态电子开关、两个控制器组成，两套控制器及四桥臂逆变单元互为主备用，两个控制器实时通讯，相互判断主备用控制器及主备用四桥臂逆变单元的工作状态，本实用新型将直流电压逆变生成三相四线制交流输出，具有中性线，体积小巧，而且具有在线双机热备份功能。

Description

一种具有在线双机热备份功能的四桥臂电力逆变器
技术领域：本实用新型涉及一种具有在线双机热备份功能的四桥臂电力逆变器。
背景技术：一般逆变器由单一的三桥臂单元、驱动电路、保护电路以及控制器等部分组成。一般是将直流电压逆变生成三相三线制交流输出，没有中性线，通过变压器次级星型接法产生中性线，体积庞大，而且没用冗余，一旦控制器或逆变单元出现故障，系统就会瘫痪，存在可靠性不高的问题。
发明内容：本实用新型的目的是提供一种体积小、可靠性高的具有在线双机热备份功能的四桥臂电力逆变器。本实用新型的技术解决方案是，逆变器由两套元件参数相同的四桥臂逆变单元、两个固态电子开关和两个控制器组成，四桥臂逆变单元的直流电压正极端子经固态电子开关与四桥臂的正极连接，四桥臂逆变单元的直流电压负极端子直接与四桥臂的负极连接。所述的两套四桥臂逆变单元分别由8个绝缘栅双极型晶体管组成，两套四桥臂逆变单元的8个绝缘栅双极型晶体管分别与两个控制器连接。本实用新型采用两套元件参数相同的四桥臂逆变单元、两个固态电子开关、两个控制器组成，两套控制器及四桥臂逆变单元互为主备用，两个控制器实时通讯，相互判断主备用控制器及主备用四桥臂逆变单元的工作状态，当主用控制器与主用四桥臂逆变单元工作异常时，立即切换到备用控制器与备用四桥臂逆变单元。本实用新型将直流电压逆变生成三相四线制交流输出，具有中性线，体积小巧，而且具有在线双机热备份功能。
附图说明
图1为现有逆变器结构示意图；
图2为本实用新型的结构示意图。
具体实施方式
逆变器由两套元件参数相同的四桥臂逆变单元1和2、两个固态电子开关K1和K2、两个控制器CON1和CON2组成，四桥臂逆变单元1或2的直流电压正极端子P经固态电子开关K1或K2与四桥臂的正极连接，四桥臂逆变单元1或2的直流电压负极端子G直接与四桥臂的负极连接。
所述的四桥臂逆变单元1和2分别由8个绝缘栅双极型晶体管组成，四桥臂逆变单元1的八个绝缘栅双极型晶体管与控制器CON1连接，四桥臂逆变单元2的八个绝缘栅双极型晶体管与控制器CON2连接。
四桥臂逆变单元1的直流电压正极端子P通过固态电子开关K1与四桥臂正极连接，四桥臂逆变单元1的直流电压负极端子G直接与四桥臂负极连接，该四桥臂逆变单元1由八个绝缘栅双极型晶体管T1～T8组成，由控制器CON1控制，可以相对独立的实现直流电压的三相四线制逆变；另一个四桥臂逆变单元2的直流电压正极端子P通过固态电子开关K2与四桥臂正极连接，四桥臂逆变单元2的直流电压负极端子G直接与四桥臂负极连接，该四桥臂逆变单元2由8个绝缘栅双极型晶体管T11～T18组成，由控制器CON2控制，可以相对独立的实现直流电压的三相四线制逆变。由T1～T8(或T11～T18)八个绝缘栅双极型晶体管构成四桥臂逆变单元，其功能是将直流电压逆变生成带中性线输出的“三相，50Hz，220VAC(相电压)”交流电。
主用四桥臂逆变单元1(或2)的直流电压正极端子P通过固态电子开关K1与主用四桥臂正极连接，直流电压负极端子G直接与主用四桥臂负极连接，第一个桥臂由绝缘栅双极型晶体管T1、T5串联构成，两管之间引出线为中性线N，第二个桥臂由绝缘栅双极型晶体管T2、T6串联构成，第三个桥臂由绝缘栅双极型晶体管T3、T7串联构成，第四个桥臂由绝缘栅双极型晶体管T4、T8串联构成，第二、三、四桥臂的两管之间引出线分别为三根相线；每个绝缘栅双极型晶体管两端并联一个25μf电解电容。主用四桥臂逆变单元由主用控制器CON1控制，可以相对独立的实现直流电压的三相四线制逆变，将直流电压逆变生成带中性线输出的“三相，50Hz，220VAC(相电压)”交流电。备用四桥臂逆变单元2(或1)直流电压正极端子P通过固态电子开关K2与备用四桥臂正极连接，直流电压负极端子G直接与备用四桥臂负极连接，第一个桥臂由绝缘栅双极型晶体管T11、T15串联构成，两管之间引出线为中性线N，第二个桥臂由绝缘栅双极型晶体管T12、T16串联构成，第三个桥臂由绝缘栅双极型晶体管T13、T17串联构成，第四个桥臂由绝缘栅双极型晶体管T14、T18串联构成，第二、三、四桥臂的两管之间引出线分别为三根相线；每个绝缘栅双极型晶体管两端并联一个25μf电解电容。备用四桥臂由备用控制器CON2控制，可以相对独立的实现直流电压的三相四线制逆变，将直流电压逆变生成带中性线输出的“三相，50Hz，220VAC(相电压)”交流电。控制策略采用三维空间矢量脉宽调制(3D-SVM)方案，在选择开关模式方面具有更好的适应性，从而降低了开关频率，具有更好的输出波形。第一个桥臂以50％的占空比转换，形成一个人工的中性端，第二、三、四桥臂分别用于提供50Hz，220VAC相电压。

Claims (2)

1.一种具有在线双机热备份功能的四桥臂电力逆变器，其特征是，逆变器由两套元件参数相同的四桥臂逆变单元(1)和(2)、两个固态电子开关(K1)和(K2)、两个控制器(CON1)和(CON2)组成，四桥臂逆变单元(1)或(2)的直流电压正极端子(P)经固态电子开关(K1)或(K2)与四桥臂的正极连接，四桥臂逆变单元(1)或(2)的直流电压负极端子(G)直接与四桥臂的负极连接。
2.根据权利要求1所述的一种具有在线双机热备份功能的四桥臂电力逆变器，其特征是，所述的四桥臂逆变单元(1)和(2)分别由8个绝缘栅双极型晶体管组成，四桥臂逆变单元(1)的8个绝缘栅双极型晶体管与控制器(CON1)连接，四桥臂逆变单元(2)的8个绝缘栅双极型晶体管与控制器(CON2)连接。
CNU2008201177511U 2008-06-16 2008-06-16 一种具有在线双机热备份功能的四桥臂电力逆变器 Expired - Fee Related CN201226498Y (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110224598A (zh) * 2019-05-09 2019-09-10 湖南大学 高可靠性恒流源电路拓扑及其控制方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110224598A (zh) * 2019-05-09 2019-09-10 湖南大学 高可靠性恒流源电路拓扑及其控制方法

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EE01 Entry into force of recordation of patent licensing contract

Assignee: HARBIN NEW ENERGY TECHNOLOGY CO., LTD.

Assignor: Harbin Dongan Engine (Group) Co., Ltd.

Contract fulfillment period: 2008.8.15 to 2018.8.6

Contract record no.: 2009230000040

Denomination of utility model: Four-bridge-arm electric power inverter with on-line two-machine heat backup function

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