CN106849671A - 匹配直流微电网三通道交直流隔离型全桥变换器 - Google Patents

匹配直流微电网三通道交直流隔离型全桥变换器 Download PDF

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CN106849671A
CN106849671A CN201710149544.8A CN201710149544A CN106849671A CN 106849671 A CN106849671 A CN 106849671A CN 201710149544 A CN201710149544 A CN 201710149544A CN 106849671 A CN106849671 A CN 106849671A
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direct
winding
current
bridge converter
inductance
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曾进辉
孙志峰
张晓虎
廖无限
刘梦圆
石扬
何智成
袁兰兰
罗仔翼
张伯伦
阳文闯
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Hunan University of Technology
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J5/005—
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/3353—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having at least two simultaneously operating switches on the input side, e.g. "double forward" or "double (switched) flyback" converter
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33561—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having more than one ouput with independent control
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
    • H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
    • H02M7/53873—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current with digital control
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/14—District level solutions, i.e. local energy networks

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

本发明公开了一种匹配直流微电网三通道交直流隔离型全桥变换器，包括由直流高压侧全桥变换器、补偿型三绕组隔离型变压器、交流侧全桥变换器、三相桥逆变器和直流低压侧全桥变换器组成，补偿型三绕组隔离型变压器，其主要由1个一次侧绕组和2个二次侧绕组的正激式结构高频变压器组成，并且每个绕组的一端均串接有一个移相补偿型电感，另外，以补偿型三绕组隔离型变压器为中心构建了匹配三个交流与直流双向工作通道直流微电网，本发明结构合理、构建方便、通用性好，不仅能够直接匹配直流微电网以适应不同电压等级用户的实际应用需求，而且还能够实现直流微电网之间高效的直流和交流电源的转换。

Description

匹配直流微电网三通道交直流隔离型全桥变换器
技术领域
本发明涉及交直流隔离型全桥变换器领域，更具体的说，是涉及一种匹配直流微电网三通道交直流隔离型全桥变换器。
背景技术
随着风能、太阳能等分布式新能源供电系统的大规模的应用，为提高电能的综合效率，把各分布式新能源供电系统整合成微电网系统已成为一种必然的发展趋势；微电网有交流微电网和直流微电网两种形式，相比交流微电网，直流微电网具有提高供电运行效率、消除谐波干扰、减小线路损耗、电磁辐射和改善用户侧电能质量的优点，因此采用直流微电网的分布式并网是当前最广泛的新能源并网方式，不但解决了局部地区新能源接入问题，用以实现分布式新能源即插即用，并且还能与大电网的协调运行；从微电网系统核心技术的发展历程来看，为匹配不同电压等级的能量转换，经历了低端的双通道DC/DC变换器阶段，到高端的三通道DC/DC变换器阶段，但其电路结构方面基本上局限在DC/DC的转换领域；另外，受传统的交流供电系统标准应用历史长久的影响，交流用户占有的比例还比较大，并且交流和直流混用的用户还会长期共存，现阶段还缺乏直接匹配直流微电网的多通道变换器，用以适应不同电压等级用户的实际应用需求。
发明内容
有鉴于此，本发明旨在提供匹配直流微电网三通道交直流隔离型全桥变换器，不但能够解决现有的三通道变换器不能满足交流和直流混合用户实际应用需求，而且能更好的完善直流供电技术体系，还能够实现直流微电网之间高效的直流和交流转换。
为了实现上述发明的目的，本发明具体提供一种匹配直流微电网三通道交直流隔离型全桥变换器，包括：直流高压侧全桥变换器、补偿型三绕组隔离型变压器、交流侧全桥变换器、三相桥逆变器和直流低压侧全桥变换器；
（1）补偿型三绕组隔离型变压器，用于承担直流微电网三通道之间交流与直流转换的电气隔离、电源能量的转换、各绕组电路之间相位补偿和相关变换器功率转换所引发的冲击能量缓冲，其主要由1个一次侧绕组和2个二次侧绕组的正激式结构高频变压器组成，并且每个绕组的一端均串接有一个移相补偿型电感，其中一次侧绕组为绕组N1，二次侧绕组分别为绕组N2和绕组N3，移相补偿型电感分别为电感L1、电感L2和电感L3，电感L1串接在绕组N1的一端，电感L2串接在绕组N2的一端，电感L3串接在绕组N3的一端；
另外，以补偿型三绕组隔离型变压器为中心构建了匹配三个交流与直流双向工作通道直流微电网，其绕组N1电感L1与直流高压侧全桥变换器输出端连接，绕组N2和电感L2与交流侧全桥变换器输入端连接，绕组N3和电感L3与直流低压侧全桥变换器输入端连接；
（2）直流高压侧全桥变换器输入端与高压直流母线HV+和高压直流母线HV-连接，交流侧全桥变换器输出端与三相桥逆变器的输入端连接，进一步三相桥逆变器的输出端与三相交流母线PHASE1、三相交流母线PHASE2和三相交流母线PHASE3连接，直流低压侧全桥变换器输出端与低压直流母线LV+和低压直流母线LV-连接；
（3）所述的匹配直流微电网三通道交直流隔离型全桥变换器能量转换，有三个双向工作通道，第一双向工作通道是高压直流母线侧、所述的匹配直流微电网三通道交直流隔离型全桥变换器和低压直流母线侧之间工作通道，第二双向工作通道是高压直流母线侧、所述的匹配直流微电网三通道交直流隔离型全桥变换器和三相交流母线侧之间工作通道，第三双向工作通道是低压直流母线侧、所述的匹配直流微电网三通道交直流隔离型全桥变换器和三相交流母线侧之间工作通道。
本发明的有益效果是，提供的一种匹配直流微电网三通道交直流隔离型全桥变换器，具有结构合理、构建方便、通用性好的优点，不仅能够直接匹配直流微电网以适应不同电压等级用户的实际应用需求，而且还能够实现直流微电网之间高效的直流和交流电源的转换。
附图说明
图1是本发明匹配直流微电网三通道交直流隔离型全桥变换器的结构示意图。
图2是本发明匹配直流微电网三通道交直流隔离型全桥变换器的一个具体实施例示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚、下面将结合本发明实施例中的附图，对本发明技术组成、技术方案和实施例进行清楚、完整地描述。显然所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本技术领域的普通技术人员在没有做出创造性劳动前提下所获得的其他实施例，都属于本发明的权利要求保护范围之内。
现结合附图和具体实施例方式对本发明进一步说明。
如附图1所示，是本发明匹配直流微电网三通道交直流隔离型全桥变换器的结构示意图，包括：直流高压侧全桥变换器、补偿型三绕组隔离型变压器、交流侧全桥变换器、三相桥逆变器和直流低压侧全桥变换器；
（1）补偿型三绕组隔离型变压器，用于承担直流微电网三通道之间交流与直流转换的电气隔离、电源能量的转换、各绕组电路之间相位补偿和相关变换器功率转换所引发的冲击能量缓冲，其主要由1个一次侧绕组和2个二次侧绕组的正激式结构高频变压器组成，并且每个绕组的一端均串接有一个移相补偿型电感，其中一次侧绕组为绕组N1，二次侧绕组分别为绕组N2和绕组N3，移相补偿型电感分别为电感L1、电感L2和电感L3，电感L1串接在绕组N1的一端，电感L2串接在绕组N2的一端，电感L3串接在绕组N3的一端；
另外，以补偿型三绕组隔离型变压器为中心构建了匹配三个交流与直流双向工作通道直流微电网，其绕组N1和电感L1与直流高压侧全桥变换器输出端连接，绕组N2和电感L2与交流侧全桥变换器输入端连接，绕组N3和电感L3与直流低压侧全桥变换器输入端连接；
（2）直流高压侧全桥变换器输入端与高压直流母线HV+和高压直流母线HV-连接，交流侧全桥变换器输出端与三相桥逆变器的输入端连接，进一步三相桥逆变器的输出端与三相交流母线PHASE1、三相交流母线PHASE2和三相交流母线PHASE3连接，直流低压侧全桥变换器输出端与低压直流母线LV+和低压直流母线LV-连接；
（3）所述的匹配直流微电网三通道交直流隔离型全桥变换器能量转换，有三个双向工作通道，第一双向工作通道是高压直流母线侧、所述的匹配直流微电网三通道交直流隔离型全桥变换器和低压直流母线侧之间工作通道，第二双向工作通道是高压直流母线侧、所述的匹配直流微电网三通道交直流隔离型全桥变换器和三相交流母线侧之间工作通道，第三双向工作通道是低压直流母线侧、所述的匹配直流微电网三通道交直流隔离型全桥变换器和三相交流母线侧之间工作通道。
如附图2所示，是本发明匹配直流微电网三通道交直流隔离型全桥变换器的一个具体实施例示意图 。
（1）其中的补偿型三绕组隔离型变压器T为正激式结构高频变压器，一次侧绕组为绕组N1，二次侧绕组分别为绕组N2和绕组N3，并且每个绕组的一端均串接有一个移相补偿型电感，移相补偿型电感分别为电感L1、电感L2和电感L3；
直流高压侧全桥变换器为典型的全桥型结构，主要由两个开关桥臂并联组成，其开关桥臂的开关管为MOSFET管，分别为开关管S1、开关管S2、开关管S3和开关管S4；
交流侧全桥变换器为典型的全桥型结构，主要由两个开关桥臂并联组成，其开关桥臂的开关管为MOSFET管，分别为开关管S5、开关管S6、开关管S7和开关管S8；
直流低压侧全桥变换器为典型的全桥型结构，主要由两个开关桥臂并联组成，其开关桥臂的开关管为MOSFET管，分别为开关管S9、开关管S10、开关管S11和开关管S12；
另外交流侧全桥变换器的输出端并联滤波电容C1，进一步还与三相桥逆变器连接，而三相桥逆变器主要由三相逆变器和三相LC滤波器组成，其中三相逆变器是由MOSFET管组成的三相桥臂，分别为开关管S13、开关管S14、开关管S15、开关管S116、开关管S17和开关管S18，而三相LC滤波器当中采用的电感分别为电感L4、电感L5和电感L6，采用的电容分别为电容C2、电容 C3和电容 C4；
（2）为了匹配直流微电网中的电源能量转换，满足不同电压等级交流和直流混合用户实际应用需求，以补偿型三绕组隔离型变压器T为中心构建了匹配三个交流与直流双向工作通道直流微电网，用以实现匹配直流微电网三通道之间电源能量的转换，并且两两通道之间转换过程可以实现双向可逆。
以上所述仅是本发明的较佳实施例而已，并非对本发明作任何形式上的限制。倘若对本发明实施方式进行各种变形和修改，但尚在本发明的精神和原则之内，均应包含在本发明的权利要求保护范围之内。

Claims (1)

1.匹配直流微电网三通道交直流隔离型全桥变换器，包括：直流高压侧全桥变换器、补偿型三绕组隔离型变压器、交流侧全桥变换器、三相桥逆变器和直流低压侧全桥变换器，其特征在于：
（1）补偿型三绕组隔离型变压器，用于承担直流微电网三通道之间交流与直流转换的电气隔离、电源能量的转换、各绕组电路之间相位补偿和相关变换器功率转换所引发的冲击能量缓冲，其主要由1个一次侧绕组和2个二次侧绕组的正激式结构高频变压器组成，并且每个绕组的一端均串接有一个移相补偿型电感，其中一次侧绕组为绕组N1，二次侧绕组分别为绕组N2和绕组N3，移相补偿型电感分别为电感L1、电感L2和电感L3，电感L1串接在绕组N1的一端，电感L2串接在绕组N2的一端，电感L3串接在绕组N3的一端；
另外，以补偿型三绕组隔离型变压器为中心构建了匹配三个交流与直流双向工作通道直流微电网，其绕组N1和电感L1与直流高压侧全桥变换器输出端连接，绕组N2和电感L2与交流侧全桥变换器输入端连接，绕组N3和电感L3与直流低压侧全桥变换器输入端连接；
（2）直流高压侧全桥变换器输入端与高压直流母线HV+和高压直流母线HV-连接，交流侧全桥变换器输出端与三相桥逆变器的输入端连接，进一步三相桥逆变器的输出端与三相交流母线PHASE1、三相交流母线PHASE2和三相交流母线PHASE3连接，直流低压侧全桥变换器输出端与低压直流母线LV+和低压直流母线LV-连接。
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107786099A (zh) * 2017-11-24 2018-03-09 清华大学 一种多分段高可靠直流变压器系统及其控制方法
CN112072719A (zh) * 2020-08-12 2020-12-11 浙江大学 交直流互联双向支撑的隔离型两级式dc/ac变换器的控制方法
CN115296327A (zh) * 2022-10-09 2022-11-04 北京金冠智能电气科技有限公司 交直流微电网运行保护电路

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107786099A (zh) * 2017-11-24 2018-03-09 清华大学 一种多分段高可靠直流变压器系统及其控制方法
CN112072719A (zh) * 2020-08-12 2020-12-11 浙江大学 交直流互联双向支撑的隔离型两级式dc/ac变换器的控制方法
CN112072719B (zh) * 2020-08-12 2021-12-14 浙江大学 交直流互联双向支撑的隔离型两级式dc/ac变换器的控制方法
CN115296327A (zh) * 2022-10-09 2022-11-04 北京金冠智能电气科技有限公司 交直流微电网运行保护电路
CN115296327B (zh) * 2022-10-09 2023-01-24 北京金冠智能电气科技有限公司 交直流微电网运行保护电路

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