朱耀明,张兰红,陈露露. 基于滑模变结构的双馈风力发电机矢量控制[J]. 南方能源建设,2025,12(1):160-167.. DOI: 10.16516/j.ceec.2024-127
引用本文: 朱耀明,张兰红,陈露露. 基于滑模变结构的双馈风力发电机矢量控制[J]. 南方能源建设,2025,12(1):160-167.. DOI: 10.16516/j.ceec.2024-127
ZHU Yaoming, ZHANG Lanhong, CHEN Lulu. Vector control of doubly fed induction generator based on sliding mode variable structure [J]. Southern energy construction, 2025, 12(1): 160-167. DOI: 10.16516/j.ceec.2024-127
Citation: ZHU Yaoming, ZHANG Lanhong, CHEN Lulu. Vector control of doubly fed induction generator based on sliding mode variable structure [J]. Southern energy construction, 2025, 12(1): 160-167. DOI: 10.16516/j.ceec.2024-127

基于滑模变结构的双馈风力发电机矢量控制

Vector Control of Doubly Fed Induction Generator Based on Sliding Mode Variable Structure

  • 摘要:
    目的 电流环是双馈风力发电机并网过程中的重要控制环节。针对传统PI控制时双馈风力发电系统在参数摄动时动态性能不佳以及传统趋近律滑模控制存在抖振问题,对滑模变结构进行了研究和设计。
    方法 基于滑模变结构的双馈风力发电机矢量控制研究方法主要聚焦于利用滑模变结构控制的优点,如响应速度快、对参数变化和扰动不敏感等,结合双馈风力发电机的特性,实现精确的矢量控制。首先设计滑模面,确保系统状态在滑模面上滑动,进而设计滑模控制器以稳定系统状态,并通过反馈调整使系统跟踪期望轨迹,从而达到对双馈风力发电机的高效、稳定控制,并将抗抖振因子与幂次函数相结合设计趋近律函数,提出一种改进型幂次函数来提高控制器的性能,构建了基于改进幂次函数的滑模控制器。
    结果 仿真表明,在风速突变的情况下,基于改进型幂次函数的滑模控制器控制过程几乎无超调。
    结论 与传统PI调节器相比, 基于改进型幂次函数的滑模控制器具有优良的动态性能和控制精度,能够在双馈风力发电系统中有效地改善控制效果,提高稳定性和抗干扰能力。

     

    Abstract:
    Objective Current loop is an important control link in the grid-connection process of doubly fed induction generator (DFIG). Aiming at the poor dynamic performance of doubly fed wind power generation system during parameter uptake in traditional PI control and the buffeting problem in traditional reaching law sliding mode control, the sliding mode variable structure is studied and designed.
    Method The research method of vector control of DFIG based on sliding mode variable structure mainly focused on utilizing the advantages of sliding mode variable structure control, such as fast response speed, insensitivity to parameter changes and perturbations, etc., and combining with the characteristics of DFIG to realize accurate vector control. First, the sliding mode surface was designed to ensure that the system state slides on the sliding mode surface, and then the sliding mode controller was designed to stabilize the system state and adjustments were made to enable the system to track the desired trajectory through feedback, to achieve efficient and stable control of DFIG. Additionally, the anti-buffeting factor was combined with the power function to design the reaching law function, proposing a kind of improved power function to improve the controller's performance. A sliding mode controller based on improved power function was then constructed.
    Result Simulations show that the control process of the sliding mode controller based on an improved power function is almost free of overshooting under sudden wind speed changes.
    Conclusion Compared with the traditional PI regulator, the sliding mode controller based on an improved power function has excellent dynamic performance and control accuracy, effectively improving the control effect, stability, and anti-interference ability in the doubly fed wind power generation system.

     

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