In recent years, due to the large spread of power electronics converters onboard shipboard power systems (SPSs), harmonic contamination became an inherent problem. Moreover, as the SPSs are mostly operating in an islanded mode with a limited rating of the generators that feed heavy variable loads, voltage stability issues became a challenge as well. To address these issues, implementing PWM-based FACTS devices using IGBTs such as the active power filters may not be very practical for high-power SPSs due to their limited rated powers, high implementation cost, and high losses. The passive power filters (PPFs) and fixed capacitor-thyristor controlled reactors (FC-TCR) can be effective alternatives due to their capability to operate in high-power applications, smaller losses and, lower cost. The aim of this article is to provide more in-depth analytical investigations to evaluate and compare the behavior of the PPFs and the FC-TCR compensator in reducing the harmonics and enhancing the voltage stability concurrently of high-power SPSs. In addition, details of the voltage stability concept are addressed to visualize the potential risk of the voltage collapse. Besides, the modeling of the FC-TCR and design of the closed-loop control algorithm to ensure voltage stability is conducted. Via intensive simulation studies of a practical ship, which are carried out in MATLAB/Simulink environment, it has been demonstrated that the FC-TCR based on the proposed design can enhance the power quality and voltage stability of SPSs better than traditional PPFs filters.

中文翻译：

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设计经济高效的补偿器，以增强高功率多电动船舶的电压稳定性和谐波污染


近年来，由于船载电力系统（SPS）上电力电子转换器的广泛普及，谐波污染成为一个固有的问题。此外，由于 SPS 大多以孤岛模式运行，为重型可变负载供电的发电机额定值有限，因此电压稳定性问题也成为一个挑战。为了解决这些问题，使用 IGBT 实现基于 PWM 的 FACTS 器件（例如有源电力滤波器）对于高功率 SPS 来说可能不太实用，因为它们的额定功率有限、实施成本高且损耗高。无源电力滤波器 (PPF) 和固定电容晶闸管控制电抗器 (FC-TCR) 可以成为有效的替代方案，因为它们能够在高功率应用中运行、损耗更小且成本更低。本文的目的是提供更深入的分析研究，以评估和比较 PPF 和 FC-TCR 补偿器在减少谐波和同时增强高功率 SPS 电压稳定性方面的行为。此外，还讨论了电压稳定性概念的细节，以可视化电压崩溃的潜在风险。此外，还进行了FC-TCR的建模和闭环控制算法的设计，以确保电压稳定。通过在 MATLAB/Simulink 环境中对实际船舶进行的深入仿真研究，表明基于所提出设计的 FC-TCR 能够比传统 PPF 滤波器更好地提高 SPS 的电能质量和电压稳定性。