微网双向变流器的解耦控制策略研究
收稿日期: 2014-09-01
修回日期: 2014-10-20
网络出版日期: 2014-12-30
基金资助
广东省高新区引导项目(2112B0900023);
广州市重大科技专项(2010U1-D00231);
院市合作项目(2012HY1006551);
所长创新基金培育专项(y407pa1001);
国家青年基金项目(51206170)
Research on Vector Decoupling Control Applied on Micro-grid Bidirectional Converter
Received date: 2014-09-01
Revised date: 2014-10-20
Online published: 2014-12-30
张继元 , 舒 杰 , 吴志峰 , 王 浩 . 微网双向变流器的解耦控制策略研究[J]. 新能源进展, 2014 , 2(6) : 476 -480 . DOI: 10.3969/j.issn.2095-560X.2014.06.011
Bidirectional converter, as the core network device in the micro-grid, plays important roles in stabilizing access point voltage, decreasing network loss rate and improving the power factor. While in synchronous rotating coordinate system, bidirectional converter is a strong coupling and nonlinear system. Therefore it needs to be decoupled control to ensure the grid current can track the given signal. The decoupling control strategy of bidirectional converter is studied, and the mathematical model of synchronous rotating coordinate system is deduced and analyzed. Based on it, the decoupling control method combining PI with feed-forward is presented. The original system is linearized and decoupled, and the coupling between active current and reactive current is removed, so that the decoupling control of the system can be realized. The experimental results show that the proposed decoupling control strategy can reduce the steady state tracking error and the total harmonic distortion.
Key words: micro-grid; bidirectional converter; vector decoupling control; harmonic
[1] 杨新法, 苏剑, 吕志鹏, 等. 微电网技术综述[J]. 中国电机工程学报, 2014, 34(1): 57-70.
[2] 张厚升, 赵艳雷. 基于矢量解耦控制的风电并网逆变器研究[J]. 电气传动, 2010, 40(9): 28-32.
[3] 袁浩, 王耀南. 单相三电平整流器双滞环SVPWM电流控制方法[J]. 电力系统保护与控制, 2014, 42(7): 31-36.
[4] 谭兴国, 王辉, 张黎, 等. 具有电压补偿的四开关并网逆变器等效SVPWM控制方法[J]. 电力系统保护与控制, 2014, 42(1): 1-8.
[5] 文小玲, 尹项根, 张哲. 三相逆变器统一空间矢量PWM实现方法[J]. 电工技术学报, 2009, 24(10): 87-93.
[6] 侯世英, 宋星, 孙韬, 等. 基于空间矢量滞环控制的新型容错三相四开关并网逆变器[J]. 电力系统保护与控制, 2011, 39(21): 138-144.
[7] 李勋, 朱鹏程, 杨荫福, 等. 基于双环控制的三相SVPWM逆变器研究[J]. 电力电子技术, 2003, 37(5): 30-32.
[8] 姚文熙, 吕征宇, 费万民. 基于PWM分解的三电平逆变器SVPWM的DSP实现方法[J]. 电力系统自动化, 2004, 28(14): 50-53.
[9] 宋文祥, 董英, 阮智勇. 电网电压不平衡时三电平整流器静止坐标系控制研究[J]. 电网技术, 2013, 37(1): 94-99.
[10] 定明芳, 刘昌玉. 基于DSP的数字化SVPWM三相逆变器闭环系统[J]. 电力自动化设备, 2006, 26(12): 41-44.
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