双馈异步风力发电机无差拍直接功率控制及延时补偿

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摘要针对双馈异步风力发电机(DFIG), 传统基于开关表的直接功率控制策略(LUT-DPC) 存在功率波动较大、开关频率不固定、电流谐波丰富等问题。本文提出一种结构和原理简单的无差拍直接功率控制策略(DB-DPC), 将无差拍控制原理与空间矢量脉宽调制(SVM)技术及DPC策略相结合, 无需旋转坐标变换, 在消除瞬时有功及无功功率静差、减少谐波含量的同时获得了固定的开关频率。采用了“两步预测”方式对实际系统中的采样周期延时进行补偿, 进一步提高了系统控制精度及动态响应速度。仿真和实验结果验证了该DB-DPC策略及延时补偿方案在DFIG中应用的正确性和可行性。

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关键词 ：双馈异步风力发电机, 无差拍, 直接功率控制, 空间矢量脉宽调制, 延时补偿

Abstract：This paper presents a dead-beat direct power control(DB-DPC) strategy for doubly fed induction generators(DFIGs) in order to overcome the power ripples, current harmonics and inconstant switching frequency of the conventional look-up table direct power control(LUT-DPC). The proposed DPC strategy employs a simple dead-beat control scheme so as to eliminate the instantaneous errors of active and reactive powers without involving any rotating coordinate transformations. A fixed switching frequency can be achieved by using the space vector modulation(SVM) technique. Furthermore, in order to alleviate the power oscillation, improve the dynamic performance and reduce the steady state errors of active and reactive powers, a two-step prediction compensation method is proposed in practical systems for both power errors and angular shifts caused by sampling delays. The effectiveness and fesibility of the proposed DB-DPC and the delay compensation strategy in the DFIG system are verified by both the simulation and experimental results.

Key words： Doubly fed induction generator dead-beat control direct power control(DPC) space vector modulation(SVM) delay compensation

收稿日期: 2013-09-13 出版日期: 2014-03-26

PACS:

TM310

基金资助:国家自然科学基金(51277159)和浙江省自然科学基金(LY13E070001)资助项目

作者简介: 孙丹女, 1975年生, 博士, 副教授, 主要研究方向为交流电机高性能控制策略和双馈异步风力发电技术。方扬男, 1990年生, 硕士研究生, 主要研究方向为变速恒频双馈异步风力发电技术。

引用本文:

孙丹, 方扬, 孙士涛, Zhu Jianguo. 双馈异步风力发电机无差拍直接功率控制及延时补偿[J]. 电工技术学报, 2013, 28(11): 70-77. Sun Dan, Fang Yang, Sun Shitao, Zhu Jianguo. Dead-Beat Direct Power Control of Doubly Fed Induction Generators with Delay Compensation. Transactions of China Electrotechnical Society, 2013, 28(11): 70-77.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2013/V28/I11/70

[1] 苑国锋, 李永东, 柴建云, 等. 1.5MW变速恒频双馈风力发电机组励磁控制系统试验研究[J]. 电工技术学报, 2009, 24(2): 42-47.
Yuan Guofeng, Li Yongdong, Chai Jianyun, et al. Experimental investigation on excitation control system of 1. 5MW variable speed constant frequency DFIG wind generator system[J]. Transactions of China Electrotechnical Society, 2009, 24(2): 42-47.
[2] 贺益康, 周鹏. 变速恒频双馈异步风力发电系统低电压穿越技术综述[J]. 电工技术学报, 2009, 24(9): 140-146.
He Yikang, Zhou Peng. Overview of the low voltage ride-through technology for variable speed constant frequency doubly fed wind power generation systems[J]. Transactions of China Electrotechnical Society, 2009, 24(9): 140-146.
[3] 刘其辉, 贺益康, 赵仁德. 交流励磁变速恒频风力发电系统的运行与控制[J]. 电工技术学报, 2008, 23(1): 129-136.
Liu Qihui, He Yikang, Zhao Rende. Operation and control of AC-Exited variable-speed constant- frequency wind power generation system[J]. Transactions of China Electrotechnical Society, 2008, 23(1): 129-136.
[4] 卢锴, 张尧, 倪伟东, 等. 电网电压跌落时双馈风力发电系统的改进控制策略研究[J]. 电力系统保护与控制, 2012, 40(11): 106-111.
Lu Kai, Zhang Yao, Ni Weidong, et al. Research of the improved control strategy for a double-fed generation system under grid voltage dip[J]. Power System Protection and Control, 2012, 40(11): 106-111.
[5] 程启明, 程尹曼, 王映斐, 等. 交流电机控制策略的发展综述[J]. 电力系统保护与控制, 2011, 39(9): 145-154.
Cheng Qiming, Cheng Yiman, Wang Yangfei, et al. Overview of control strategies for AC motor[J]. Power System Protection and Control, 2011, 39(9): 145-154.
[6] Xu L, Cartwright P. Direct active and reactive power control of DFIG for wind energy generation[J]. IEEE Transaction on Energy Conversion, 2006, 21(3): 750-758.
[7] Liu S Y, Mendes V F, Silva S R. Analysis of direct power control strategies applied to doubly fed induction generator[C]. Brazilian Power Electronics Conference(COBEP), 2011: 949-954.
[8] Sun Shitao, Sun Dan, Deng Lunjie. Model predictive direct power control of doubly-fed wind power generation system[C]. International Conference on Electrical Machines and Systems (ICEMS), 2012: 1-5.
[9] Zhi Dawei, Xu Lie, Williams B W. Model-based predictive direct power control of doubly fed induction generators[J]. IEEE Transactions on Power Electronics, 2010, 25(2): 341-351.
[10] 贺子倩. 变速恒频双馈风力发电系统改进直接功率控制策略[D]. 杭州: 浙江大学, 2012.
[11] Hu Jiabing, Nian Heng, Hu Bin, et al. Direct active and reactive power regulation of DFIG using sliding-mode control approach[J]. IEEE Transaction on Energy Conversion, 2010, 25(4): 1028-1039.
[12] 郭家虎, 张鲁华, 蔡旭. 双馈风力发电系统在电网三相短路故障下的响应与保护[J]. 电力系统保护与控制, 2010, 38(6): 40-44.
Guo Jiahu, Zhang Luhua, Cai Xu. Response and protection of DFIG system under three-phase short circuit fault of grid[J]. Power System Protection and Control, 2010, 38(6): 40-44.
[13] 张晓, 李新宇, 周睿. 三相四桥臂并联型APF无差拍控制策略的研究[J]. 电力系统保护与控制, 2011, 39(20): 78-83.
Zhang Xiao, Li Xinyu, Zhou Rui. Study on a deadbeat control scheme for three-phase four-leg shunt active power filter[J]. Power System Protection and Control, 2011, 39(20): 78-83.
[14] Seung Ho Song, Jong Woo Choi, Seung Ki Sul. Current measurements in digitally controlled AC drives[J]. IEEE Industry Applications Magazine, 2000, 6(4): 51-62.
[15] Hu Jiabing. Improved dead-beat predictive DPC strategy of grid-connected DC-AC converters with switching loss minimization and delay compensations[J]. IEEE Transactions on Industrial Informatics, 2013, 9(2): 728-738.