A capacitive-coupled transformerless active power filter with coupling current feedback control

C. Lam, M. Wong
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引用次数: 3

Abstract

This paper presents a low rating capacitive-coupled transformerless active power filter (APF) for reactive power, current harmonics and neutral current compensation in three-phase four-wire distribution power system. Besides the benefits of APFpsilas rating and initial cost reduction, it can lessen the switching loss and electromagnetic interference (EMI) problems, without significantly deteriorates the compensation capability. A novel control strategy is also proposed to strengthen the system damping and stability. Thus, the capacitive-coupled APF is characterized by low capacity, economical cost, stable and good filtering performance. Finally, simulation results are given to verify the viability and effectiveness of the APF and its control.
具有耦合电流反馈控制的电容耦合无变压器有源电力滤波器
提出了一种用于三相四线制配电系统无功、电流谐波和中性电流补偿的低额定值电容耦合无变压器有源电力滤波器。除了APFpsilas等级和初始成本降低的好处外,它还可以减少开关损耗和电磁干扰(EMI)问题,而不会显著降低补偿能力。提出了一种新的控制策略来增强系统的阻尼和稳定性。因此,电容耦合有源滤波器具有容量小、成本经济、滤波性能稳定等特点。最后给出了仿真结果,验证了有源滤波器及其控制的可行性和有效性。
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