Design and analysis of DC/AC inverter using passive LCL filter with damping circuit configuration

Faizal Arya Samman, M. Hasan, T. Damayanti
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引用次数: 7

Abstract

This paper presents the study and analysis on the impacts of the insertion of a damper circuit in an LCL passive filter utilized to filter DC/AC inverter's output voltage. The damper is used to reduce peak resonance on its frequency response curves. The existing resonance frequency can make the filtered inverter output voltage become weak and unstable. One of existing solutions to overcome this problem is proposed by using of a damping resistor. Damping method can be applied using various configurations. However, this paper only discussed two damping configurations, namely series and parallel damping configuration. We use three criteria to analyze the impacts of the damper circuits, i.e. its capability of reducing total harmonic distortions (THDs), to maintain the output voltage and to improve output power of the inverter. Theoretically, the damper can reduce its peak resonance frequency. However, in any circumstance, it can potentially reduce the inverter's power, voltage output amplitude, and cannot improve its THD reduction.
无源LCL滤波器带阻尼电路配置的直流/交流逆变器设计与分析
本文对用于滤波直流/交流逆变器输出电压的LCL无源滤波器中插入阻尼电路的影响进行了研究和分析。阻尼器用于降低其频率响应曲线上的峰值共振。现有的谐振频率会使滤波后的逆变器输出电压变弱而不稳定。现有的解决方案之一是利用阻尼电阻来克服这一问题。阻尼法可应用于各种配置。然而,本文只讨论了两种阻尼配置,即串联和并联阻尼配置。我们使用三个标准来分析阻尼器电路的影响,即其降低总谐波失真(THDs)的能力,保持输出电压和提高逆变器的输出功率。理论上,阻尼器可以降低其峰值共振频率。然而,在任何情况下,它都有可能降低逆变器的功率、电压输出幅值,而不能提高其THD降频。
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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