Impedance interaction and power flow enhancement in DC microgrids by using interval type-2 fuzzy logic and active voltage stabilizer-based hybrid damping controller

IF 1.6 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Ravishankar Gupta, Navdeep Singh
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引用次数: 0

Abstract

In DC microgrids the impedance interaction takes place due to the cascaded connection of a Permanent Magnet Synchronous Generator -Voltage Source Converter and a Dual Active Bridge converter. This impedance interaction adversely degrades system stability and transient response, resulting in oscillations and voltage deviations and affecting power flow in the DC microgrid. To mitigate these challenges, a modified control strategy is proposed, that integrates an interval type-2 fuzzy logic controller (IT2FLC) with an active voltage stabilizer (AVS) and active damping (AD). The modified controller regulates voltage, current transients, and power flow more effectively than a conventional controller. The IT2FLC enhances microgrid stability by handling system uncertainties, non-linearities, and impedance interactions of cascaded systems. The AVS ensures rapid and accurate voltage regulation during transient conditions, helping to maintain a consistent voltage despite sudden changes in load. At the same time, AD suppresses oscillations, preventing resonance and ensuring smooth operation. The modified controller (IT2FLC+AVS+AD) is also compared with different controllers like PI, (PI+AD), and (PI+AVS+AD) in terms of transient parameters that reveal the modified controller is better in terms of rise time, overshoot, undershoot, and settling time.

Abstract Image

利用区间 2 型模糊逻辑和基于有源电压稳定器的混合阻尼控制器增强直流微电网中的阻抗相互作用和功率流
在直流微电网中,由于永磁同步发电机-电压源转换器和双有源桥式转换器的级联连接,会产生阻抗相互作用。这种阻抗相互作用会降低系统稳定性和瞬态响应,导致振荡和电压偏差,并影响直流微电网中的电力流动。为了缓解这些挑战,我们提出了一种改进的控制策略,它将区间 2 型模糊逻辑控制器(IT2FLC)与主动电压稳定器(AVS)和主动阻尼(AD)集成在一起。与传统控制器相比,改进后的控制器能更有效地调节电压、电流瞬态和功率流。IT2FLC 可处理级联系统的系统不确定性、非线性和阻抗相互作用,从而增强微电网的稳定性。AVS 可确保在瞬态条件下快速、准确地调节电压,帮助在负载突然变化时保持稳定的电压。同时,AD 还能抑制振荡,防止共振,确保平稳运行。我们还将改进后的控制器(IT2FLC+AVS+AD)与 PI、(PI+AD)和(PI+AVS+AD)等不同控制器的瞬态参数进行了比较,结果表明改进后的控制器在上升时间、过冲、下冲和稳定时间方面更胜一筹。
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来源期刊
Electrical Engineering
Electrical Engineering 工程技术-工程:电子与电气
CiteScore
3.60
自引率
16.70%
发文量
0
审稿时长
>12 weeks
期刊介绍: The journal “Electrical Engineering” following the long tradition of Archiv für Elektrotechnik publishes original papers of archival value in electrical engineering with a strong focus on electric power systems, smart grid approaches to power transmission and distribution, power system planning, operation and control, electricity markets, renewable power generation, microgrids, power electronics, electrical machines and drives, electric vehicles, railway electrification systems and electric transportation infrastructures, energy storage in electric power systems and vehicles, high voltage engineering, electromagnetic transients in power networks, lightning protection, electrical safety, electrical insulation systems, apparatus, devices, and components. Manuscripts describing theoretical, computer application and experimental research results are welcomed. Electrical Engineering - Archiv für Elektrotechnik is published in agreement with Verband der Elektrotechnik Elektronik Informationstechnik eV (VDE).
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