CN102097819A - 共轭多向逆变电源 - Google Patents

共轭多向逆变电源 Download PDF

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Publication number
CN102097819A
CN102097819A CN2010101747837A CN201010174783A CN102097819A CN 102097819 A CN102097819 A CN 102097819A CN 2010101747837 A CN2010101747837 A CN 2010101747837A CN 201010174783 A CN201010174783 A CN 201010174783A CN 102097819 A CN102097819 A CN 102097819A
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China
Prior art keywords
inverter
multidirectional
grid
energy
bidirectional
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CN2010101747837A
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English (en)
Inventor
李晟
王北宁
肖慧明
王卫
易昂
谢小林
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Zhuhai Singyes Renewable Energy Technology Co Ltd
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Zhuhai Singyes Renewable Energy Technology Co Ltd
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Application filed by Zhuhai Singyes Renewable Energy Technology Co Ltd filed Critical Zhuhai Singyes Renewable Energy Technology Co Ltd
Priority to CN2010101747837A priority Critical patent/CN102097819A/zh
Priority to PCT/CN2011/070672 priority patent/WO2011140841A1/zh
Publication of CN102097819A publication Critical patent/CN102097819A/zh
Pending legal-status Critical Current

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for AC mains or AC distribution networks
    • H02J3/28Arrangements for balancing of the load in a network by storage of energy
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for AC mains or AC distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381Dispersed generators
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for AC mains or AC distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46Controlling of the sharing of output between the generators, converters, or transformers
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20The dispersed energy generation being of renewable origin
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30Systems combining energy storage with energy generation of non-fossil origin

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

一种共轭多向逆变电源,应用于微型智能电网系统。共轭多向逆变电源由双向并网逆变器,双向离网逆变器和直流母线三大部分组成,双向并网逆变器和双向离网逆变器共用一个直流母线,储能设备直接接在直流母线上,双向并网逆变器连接公共电网,负载和可再生能源发电并入双向离网逆变器端。共轭多向逆变电源控制能量在公共电网、储能系统、可再生能源发电系统和负载之间的多向流动。附图中:(1)双向并网逆变器,(2)直流母线,(3)双向离网逆变器,(4)共轭多向逆变电源本体,(5)负载及可再生能源发电,(6)蓄电池,(7)公共电网。

Description

共轭多向逆变电源
所属技术领域
本发明应用于基于新能源发电的微型智能电网系统。
背景技术
能源危机和环境危机日益受到关注,可再生能源的应用和推广受到人们广泛重视,可再生能源发电并网运行是新能源产业发展的趋势之一,可再生能源中的太阳能、风能等与环境气候关系密切,发电性能不稳定,直接并网容易对公共电网造成冲击。由一系列分布式微型电源、储能系统和负荷、控制系统等共同组成的微型智能电网系统适合可再生能源的并网接入,微型智能电网系统核心技术是能够控制能量多向流动的部件。
发明内容
针对微型智能电网系统设计要求,本发明提供了一种能完成能量从公共电网、储能系统、可再生能源发电系统和负载之间多向流动的共轭多向逆变电源。共轭多向逆变电源主要由双向并网逆变器、双向离网逆变器和直流母线组成,双向并网逆变器和双向离网逆变器共用一个直流母线,储能设备直接接在直流母线上,本发明解决其技术问题所采用的技术方案是:
相对于公共电网,共轭多向逆变电源相当于一个双向并网逆变器,直流母线多余能量可以通过双向并网逆变器输入公共电网;当可再生能源发电量小于负载时或蓄电池充电需要从公共电网取能量时,相当于一个整流器,电能从公共电网流向直流母线。
相对于用电负载,共轭多向逆变电源是相当于双向离网逆变器,可再生能源发电可并入双向离网逆变器的输出端。当可再生能源产生的能量大于负载时,能量从负载端流到共轭多向逆变电源内部的直流母线上;当可再生能源产生的能量小于负载时,直流母线上的能量也可以通过双向离网逆变器流向负载。
储能设备直接接在共轭多向逆变电源内部的直流母线上,当公共电网需要能量时,共轭多向逆变电源可由双向并网逆变器控制能量从直流母线流向公共电网上;当负载需要能量时,可由双向离网逆变器控制能量从直流母线流向负载;当公共电网与负载端有能量过剩时,可从公共电网或负载端流回储能设备。
附图说明
下面结合附图说明共轭多向逆变电源的结构。
图1为共轭多向逆变电源拓扑结构图,图中(4)所指虚线框中的部分为共轭多向逆变电源本体,它由(1)双向并网逆变器,(2)直流母线,(3)双向离网逆变器组成。(7)为公共电网,连接双向并网逆变器端,(6)为蓄电池,连接直流母线,(5)为负载及可再生能源发电,并入双向离网逆变器端。
图2为共轭多向逆变电源的基本原理图,(1)为双向并网逆变器,(3)为双向离网逆变器。图中(8)和(10)为隔离变压器,(9),(11)为IGBT全桥逆变\整流电路,(2)为直流母线,(6)为蓄电池组。
具体实施方案
如图2所示,可再生能源所发电能进入双向离网逆变器(3),通过隔离变压器(10)以及滤波后通过三相全桥整流电路(11)整流后并入直流母线。类似的,公共电网供电进入双向并网逆变器(1),通过隔离变压器(2)以及滤波后通过三相全桥整流电路(9)整流后并入直流母线(2)。反过来,直流母线上的电能分别通过三相全桥逆变电路(9)(11)逆变后通过隔离变压器(8)(10)对公共电网和负载端输电。同时通过控制直流母线电压可以实现对蓄电池组(6)的充/放电。
这样就能完成了如图1所示的能量流动,通过共轭多向逆变电源,可再生能源产生的电能(10)可以传输到蓄电池(6)储存,也可以传输到(2)对公共电网输电;蓄电池存储的电能可以传输到负载对负载供电,也可以传输到对公共电网输电;公共电网可以对蓄电池充电,也可以对负载端供电。

Claims (2)

1.一种共轭多向逆变电源,其特征是:双向并网整流\逆变器与双向离网整流\逆变器通过直流母线连接,控制能量在公共电网、储能系统、可再生能源发电系统和负载之间的多向流动。
2.根据权利要求1所述的共轭多向逆变电源,其特征是:通过控制直流母线的电压控制对储能设备的充/放电及充/放电速度。
CN2010101747837A 2010-05-14 2010-05-14 共轭多向逆变电源 Pending CN102097819A (zh)

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CN2010101747837A CN102097819A (zh) 2010-05-14 2010-05-14 共轭多向逆变电源
PCT/CN2011/070672 WO2011140841A1 (zh) 2010-05-14 2011-01-26 共轭多向逆变电源

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102957335A (zh) * 2012-11-23 2013-03-06 广东易事特电源股份有限公司 用于并网发电系统的双向储能逆变器
CN105186562A (zh) * 2015-09-07 2015-12-23 中国农业大学 一种大规模分布式电源的微网群及其控制方法
CN106981480A (zh) * 2017-05-27 2017-07-25 富士电机(中国)有限公司 Igbt模块、动力系统和混合动力汽车

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CN1601847A (zh) * 2004-10-18 2005-03-30 青岛经济技术开发区创统科技发展有限公司 抽油机用风力发电和网电互补供电电源
EP1746713A1 (en) * 2004-03-24 2007-01-24 Sharp Kabushiki Kaisha Inverter system
JP2007228661A (ja) * 2006-02-21 2007-09-06 Toshiba Mitsubishi-Electric Industrial System Corp 無停電電源装置
CN201286019Y (zh) * 2008-09-19 2009-08-05 上海万德风力发电股份有限公司 一种与电网互联式110kw风光互补发电系统
CN101604854A (zh) * 2009-07-17 2009-12-16 哈尔滨工程大学 太阳能风能联合发电系统

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Publication number Priority date Publication date Assignee Title
EP1746713A1 (en) * 2004-03-24 2007-01-24 Sharp Kabushiki Kaisha Inverter system
CN1601847A (zh) * 2004-10-18 2005-03-30 青岛经济技术开发区创统科技发展有限公司 抽油机用风力发电和网电互补供电电源
JP2007228661A (ja) * 2006-02-21 2007-09-06 Toshiba Mitsubishi-Electric Industrial System Corp 無停電電源装置
CN201286019Y (zh) * 2008-09-19 2009-08-05 上海万德风力发电股份有限公司 一种与电网互联式110kw风光互补发电系统
CN101604854A (zh) * 2009-07-17 2009-12-16 哈尔滨工程大学 太阳能风能联合发电系统

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102957335A (zh) * 2012-11-23 2013-03-06 广东易事特电源股份有限公司 用于并网发电系统的双向储能逆变器
CN105186562A (zh) * 2015-09-07 2015-12-23 中国农业大学 一种大规模分布式电源的微网群及其控制方法
CN105186562B (zh) * 2015-09-07 2018-02-16 中国农业大学 一种大规模分布式电源的微网群及其控制方法
CN106981480A (zh) * 2017-05-27 2017-07-25 富士电机(中国)有限公司 Igbt模块、动力系统和混合动力汽车
CN106981480B (zh) * 2017-05-27 2023-10-27 富士电机(中国)有限公司 Igbt模块、动力系统和混合动力汽车

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Application publication date: 20110615