A new sensor-less voltage and frequency control of stand-alone DFIG based dead-beat direct-rotor flux control-experimental validation

IF 6.3 2区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS ISA transactions Pub Date : 2025-03-01 DOI:10.1016/j.isatra.2024.12.039
Mohammed Saci Chabani , M.T. Benchouia , A. Golea , Almoataz Y. Abdealziz , Mahmoud A. Mossa
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Abstract

The paper presents a new sensor-less voltage and frequency control method for a stand-alone doubly-fed induction generator (DFIG) feeding an isolated load. The proposed control approach directly regulates the magnitude and angle of the rotor-flux vector rather than controlling rotor currents or voltages as in classic field oriented control (FOC). To accurately regulate the magnitude and frequency of stator voltage, two separate closed-loop based PI regulators are employed to evaluate the reference signals of the rotor flux vector magnitude and angle, respectively. As the proposed control strategy directly regulates the rotor flux vector in the rotor frame, this helps effectively in avoiding the use of rotor speed/position sensors or computationally intensive rotor speed estimators. Furthermore, the stator current measurements are not required to evaluate the load power requirement, considerably reducing the control implementation cost for the system. Furthermore, the proposed control strategy has the ability to operate in both sub-synchronous and super-synchronous speed modes without the need to identify the operating speed range. Since the method only requires knowledge of rotor resistance, it is extremely simple to use and virtually parameter-independent. To evaluate the performance, effectiveness and robustness of the new controller, extensive simulation and experimental tests of a 3-kW laboratory generator are accomplished for different operating conditions. Additionally, a performance comparison with the classic FOC strategy is made, from which the superiority of the proposed control is clearly confirmed.
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基于恒拍直接转子磁链控制的单机DFIG无传感器压频控制——实验验证。
本文提出了一种新的无传感器电压和频率控制方法,用于单机双馈感应发电机(DFIG)馈电隔离负载。该控制方法直接调节转子磁链矢量的大小和角度,而不是像传统的场定向控制(FOC)那样控制转子电流或电压。为了精确调节定子电压的幅值和频率,采用两个独立的基于闭环的PI调节器分别对转子磁链矢量幅值和角度的参考信号进行评估。由于所提出的控制策略直接调节转子框架中的转子磁链矢量,这有助于有效地避免使用转子速度/位置传感器或计算量大的转子速度估计器。此外,定子电流测量不需要评估负载功率需求,大大降低了系统的控制实施成本。此外,所提出的控制策略具有在次同步和超同步速度模式下运行的能力,而无需识别运行速度范围。由于该方法只需要转子电阻的知识,它是非常简单的使用和几乎参数无关。为了评估新控制器的性能、有效性和鲁棒性,对一台3kw实验室发电机在不同工况下进行了大量的仿真和实验测试。此外,还与经典的FOC策略进行了性能比较,明确了所提控制的优越性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
ISA transactions
ISA transactions 工程技术-工程:综合
CiteScore
11.70
自引率
12.30%
发文量
824
审稿时长
4.4 months
期刊介绍: ISA Transactions serves as a platform for showcasing advancements in measurement and automation, catering to both industrial practitioners and applied researchers. It covers a wide array of topics within measurement, including sensors, signal processing, data analysis, and fault detection, supported by techniques such as artificial intelligence and communication systems. Automation topics encompass control strategies, modelling, system reliability, and maintenance, alongside optimization and human-machine interaction. The journal targets research and development professionals in control systems, process instrumentation, and automation from academia and industry.
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