A direct predictive DC-link voltage control with warm-starting iterative approach for three-level NPC BTB converter fed PMSG-based wind turbine systems

IF 7.5 1区计算机科学 Q1 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE

Expert Systems with Applications Pub Date : 2025-04-29 DOI:10.1016/j.eswa.2025.127747

Mayilsamy Ganesh , Jae Hoon Jeong

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引用次数: 0

Abstract

This article presents a direct predictive DC-link voltage control (DPVC) scheme for a three-level (3L) neutral point clamped (NPC) back-to-back (BTB) converter fed permanent magnet synchronous generator (PMSG)-based wind turbine system (WTS). The conventional 3L NPC BTB converter employs an external PI controller to regulate the DC-link voltage at the set point by generating power or current references for the cascaded finite control set (FCS) predictive control. The presented strategy incorporates the DC-link voltage regulation term into the power regulation term in the grid-side converter (GSC) cost function, identifying the optimum switching state that directly regulates the DC-link voltage at the set point. Through this, the required active power is transferred to the grid to maintain power balance, and the conventional cascaded control structure is eliminated. In addition, a warm-starting iterative approach (WSIA) is introduced to derive the switching states employed for each switching instant. This reduces computation in both the GSC and machine-side converter (MSC) control and inherently incorporates switching frequency optimization. The presented scheme is validated in 3 MW rated WTS simulations under various operating conditions, with comparative studies performed to demonstrate its significance.

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基于pmsg的三电平NPC BTB变流器直流电压直接预测热启动迭代控制

本文提出了一种基于三电平（3L）中性点箝位（NPC）背对背（BTB）变流器馈电永磁同步发电机（PMSG）的风力发电系统（WTS）直流电压直接预测控制（DPVC）方案。传统的3L NPC BTB转换器采用外部PI控制器，通过为级联有限控制集（FCS）预测控制产生功率或电流参考来调节设定点的直流链路电压。该策略将直流电压调节项与电网侧变换器（GSC）代价函数中的功率调节项相结合，确定了在设定点直接调节直流电压的最佳开关状态。通过这种方式，将所需的有功功率转移到电网中，保持功率平衡，消除了传统的级联控制结构。此外，还引入了一种热启动迭代法（WSIA）来推导每个切换瞬间所采用的切换状态。这减少了GSC和机器端转换器（MSC）控制的计算，并固有地结合了开关频率优化。该方案已在3mw额定WTS仿真中进行了各种工况的验证，并进行了对比研究，证明了其重要性。

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

Expert Systems with Applications 工程技术-工程：电子与电气

CiteScore

13.80

自引率

10.60%

发文量

2045

审稿时长

8.7 months

期刊介绍： Expert Systems With Applications is an international journal dedicated to the exchange of information on expert and intelligent systems used globally in industry, government, and universities. The journal emphasizes original papers covering the design, development, testing, implementation, and management of these systems, offering practical guidelines. It spans various sectors such as finance, engineering, marketing, law, project management, information management, medicine, and more. The journal also welcomes papers on multi-agent systems, knowledge management, neural networks, knowledge discovery, data mining, and other related areas, excluding applications to military/defense systems.