大功率电流型光伏并网换流器的拓扑与控制Topology and Control of High-Power Current Source Converter for Grid-Connection of Photovoltaic Generation System
武海涛;刘永和;
摘要(Abstract):
为克服电压源型换流器在大功率光伏并网系统应用中存在的缺陷,结合谐波注入技术和多电平技术提出了既能够并网发电、又能实现无功补偿和抑制谐波电流的大功率单级式电流源型光伏并网换流器拓扑。首先分析了该拓扑的结构及工作原理,构建了该系统的数学模型;然后提出了适用于该系统的非线性控制策略,重点分析了全局线性化的处理方法;最后在PSCAD平台搭建了仿真模型。仿真结果验证了该拓扑结构和控制策略的有效性。
关键词(KeyWords): 谐波注入;多电平;非线性;无功补偿;光伏并网;谐波抑制
基金项目(Foundation): 国家自然科学基金项目(51067006);; 内蒙古自治区自然科学基金重大项目(2010ZD06);; 内蒙古工业大学科学研究基金项目(ZS201234)~~
作者(Author): 武海涛;刘永和;
Email:
DOI: 10.13335/j.1000-3673.pst.2013.08.023
参考文献(References):
- [1]许洪华.中国光伏发电技术发展研究[J].电网技术,2007,31(20):77-81.Xu Honghua.The study on development of PV technology in China[J].Power Systems Technology,2007,31(20):77-81(in Chinese).
- [2]刘东冉,陈树勇,马敏,等.光伏发电系统模型综述[J].电网技术,2011,35(8):47-52.Liu Dongran,Chen Shuyong,Ma Min,et al.A review on models forphotovoltaic generation system[J].Power Systems Technology,2011,35(8):47-52(in Chinese).
- [3]Blanes J M.Two-stage MPPT power regulator for satellite electricalpropulsion system[J].IEEE Transactions on Aerospace and ElectronicSystems,2011,47(3):1617-1630.
- [4]吴小进,魏学业,于蓉蓉,等.并网逆变器预测电流控制算法性能分析[J].电网技术,2012,36(6):220-225.Wu Xiaojin,Wei Xueye,Yu Rongrong,et al.Performance analysison predictive current regulation algorithms for grid-connectedinverter[J].Power System Technology,2012,36(6):220-225(inChinese).
- [5]张浙波,刘建政,梅红明.两级式三相光伏并网发电系统无功补偿特性[J].电工技术学报,2011,26(S1):242-246.Zhang Zhebo,Liu Jianzheng,Mei Hongming.Study of reactive powercompensation characteristics on a three-phase double-stagegrid-connected photovoltaic power system[J].Transactions of ChinaElectrotechnical Society,2011,26(S1):242-246(in Chinese).
- [6]周林,张林强,廖波,等.单相光伏逆变器控制技术研究[J].电网技术,2012,36(9):25-30.Zhou Lin,Zhang Linqiang,Liao Bo,et al.Research on controlstrategy of single-phase photovoltaic inverter[J].Power SystemTechnology,2012,36(9):25-30(in Chinese).
- [7]Chen Y,Ma S K.One-cycle-controlled three-phase grid-connectedinverters and their parallel operation[J].IEEE Transactions onIndustry Applications,2008,44(2):663-671.
- [8]王文军,汤钰鹏,张晔.逆变器并联运行的环流反馈控制[J].电力系统保护与控制,2009,37(17):16-19.Wang Wenjun,Tang Yupeng,Zhang Ye.Feedback control strategy ofcircle current in parallel inverters[J].Power System Protection andControl,2009,37(17):16-19(in Chinese).
- [9]张宇,段善旭,康勇,等.逆变器并联系统中谐波环流抑制的研究[J].中国电机工程学报,2006,26(12):67-72.Zhang Yu,Duan Shanxu,Kang Yong,et al.The research ofharmoniccirculating current restrain in parallel inverter system[J].Proceedings of the CSEE,2006,26(12):67-72(in Chinese).
- [10]Arrillaga J,Joosten A P B,Baird J F.Increasing the pulse number ofAC-DC converters by current reinjection techniques[J].IEEETransactions on Power Apparatus and Systems,1983,102(8):2649-2655.
- [11]Liu Y H,Arrillaga J,Watson N R.Reinjection concept:a new optionfor large power and high-quality AC-DC conversion[J].IET PowerElectron,2008,1(1):4-13.
- [12]Perera L B,Liu Y H,Watson N R.Multi-level current reinjection indouble-bridge self-commutated current source conversion[J].IEEETrans on Power Delivery,2005,20(2):984-991.
- [13]Arrillaga J,Liu Y H,Perera L B,et al.A current reinjection schemethat adds self-commutation and pulse multiplication to the thyristorconverter[J].IEEE Trans on Power Delivery,2006,21(3):1593-1599.
- [14]郑凌蔚,刘士荣,徐青鹤.基于非线性扩散粒子群算法的光伏微网并网点恒定潮流控制[J].电网技术,2010,34(10):152-156.Zheng Lingwei,Liu Shirong,Xu Qinghe.Constant power flowcontrol at grid-connected point of photovoltaic micro grid based onnonlinear diffusion particle swarm optimization[J].Power SystemTechnology,2010,34(10):152-156(in Chinese).
- [15]Yang Y,Kazerani M,Quintana V H.Modeling,control andimplementation of three-phase PWM converters[J].IEEETransactions on Power Electronics,2003,18(3):857-864.
- [16]余勇,张兴,季建强,等.大功率电流型多重化变频电源系统控制和分析[J].中国电机工程学报,2004,24(12):24-28.Yu Yong,Zhang Xing,Ji Jianqiang,et al.High power current sourcemultiple variable frequency power supply system control andanalysis[J].Proceedings of the CSEE,2004,24(12):24-28(inChinese).