Enhanced Control of a DFIG-Based Wind-Power Generation System With Series Grid-Side Converter Under Unbalanced Grid Voltage Conditions
Enhanced Control of a DFIG-Based Wind-Power Generation System With Series Grid-Side Converter Under Unbalanced Grid Voltage Conditions
复制标题
基于串联网侧变流器的双馈风力发电系统在电网电压不平衡条件下的增强控制
DOI：
10.1109/tpel.2012.2219884
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发表时间：
2013-07
影响因子：
6.7
通讯作者：
Liao, Yong
中科院分区：
文献类型：
--
作者：
Yao, Jun;Li, Hui;Chen, Zhe;Xia, Xianfeng;Chen, Xiyin;Li, Qing;Liao, Yong
提出了一种基于双馈感应发电机(DFIG)的串联型网侧变流器(SGSC)风力发电系统在电网电压不平衡条件下的增强型控制方法。描述了具有SGSC的DFIG系统在网络不平衡时的行为。通过注入SGSC产生的串联控制电压来平衡定子电压，可以消除电压不平衡对DFIG的不利影响，如定、转子电流不平衡、电磁转矩和功率脉动，从而使传统的转子侧逆变器矢量控制策略在不平衡条件下保持完全有效。同时，确定了并网变流器(PGSC)的三个控制目标，包括消除总有功功率或无功功率的振荡或消除注入电网的负序电流。此外，为了进一步提高整个系统的运行性能，还提出了一种精确的PGSC电流基准产生策略。最后，通过含SGSC的2 MW-DFIG风电机组的仿真结果和实验室小静态电压不平衡实验台的实验结果，验证了所提出的含SGSC的DFIG系统协调控制策略的有效性。
This paper presents an enhanced control method for a doubly fed induction generator (DFIG)-based wind-power generation system with series grid-side converter (SGSC) under unbalanced grid voltage conditions. The behaviors of the DFIG system with SGSC during network unbalance are described. By injecting a series control voltage generated from the SGSC to balance the stator voltage, the adverse effects of voltage unbalance upon the DFIG, such as stator and rotor current unbalances, electromagnetic torque, and power pulsations, can be removed, and then the conventional vector control strategy for the rotor-side converter remains in full force under unbalanced conditions. Meanwhile, three control targets for the parallel grid-side converter (PGSC) are identified, including eliminating the oscillations in the total active power or reactive power, or eliminating negative-sequence current injected to the grid. Furthermore, a precise current reference generation strategy for the PGSC has been proposed for the PGSC to further improve the operation performance of the whole system. Finally, the proposed coordinated control strategy for the DFIG system with SGSC has been validated by the simulation results of a 2-MW-DFIG-based wind turbine with SGSC and experimental results on a laboratory-scale experimental rig under small steady-state grid voltage unbalance.
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DOI：
10.21427/et3d-fd74
发表时间：
2009-09
期刊：
2009 44th International Universities Power Engineering Conference (UPEC)
影响因子：
--
作者：
J. Kearney;M. Conlon;E. Coyle
通讯作者：
J. Kearney;M. Conlon;E. Coyle
影响因子：
6.7
作者：
P. Flannery;G. Venkataramanan
通讯作者：
P. Flannery;G. Venkataramanan
DOI：
10.1109/apec.1996.500517
发表时间：
1996-03
期刊：
Proceedings of Applied Power Electronics Conference. APEC '96
影响因子：
--
作者：
V. Kaura;V. Blasko
通讯作者：
V. Kaura;V. Blasko
DOI：
10.1109/08ias.2008.153
发表时间：
2008-10
期刊：
2008 IEEE Industry Applications Society Annual Meeting
影响因子：
--
作者：
W. Qiao;R. Harley
通讯作者：
W. Qiao;R. Harley
影响因子：
7.7
作者：
Song, HS;Nam, K
通讯作者：
Nam, K