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A new Approach for DC-link Stability Analyses of a Grid Connected Inverter, DC/DC-Converters and a Hybrid Storage System

机译:一种新的电网连接逆变器,DC / DC转换器和混合储存系统的DC链路稳定性分析方法

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This paper presents a new approach for DC-link stability analysis of a grid connected inverter and a hybrid storage system, consisting of several power electronic based switching converters, a redox flow battery and a flywheel. The impedance method is used and the stability is analyzed with major stability criteria like Nyquist, Middlebrook or the Energy Source Analysis Consortium. The presented method can be used for any desired amount of storages at a single DC-link. It also includes control parameters of the converters and the parameters of their filter devices. A state space average model for a DC/DC-converter has been developed and implemented to determine the input and output impedances correctly. The presented method can also be used for varying power flow directions and different infeed and load situations of the storage system. Matlab is used for calculations and the results show a stable behavior of the used hybrid storage system.
机译:本文提出了一种新方法,用于电网连接逆变器和混合储存系统的直流链路稳定性分析,包括多个电力基于电子的开关转换器,氧化还原流电池和飞轮。使用阻抗方法,并通过奈奎斯特,中间字或能源分析联盟等主要稳定标准分析稳定性。本方法可以在单个DC链路中用于任何所需量的存储量。它还包括转换器的控制参数和其滤波器设备的参数。已经开发并实现了DC / DC转换器的状态空间平均模型,以确定输入和输出阻抗。所提出的方法还可用于不同的功率流动方向和存储系统的不同进给和负载情况。 MATLAB用于计算,结果显示了使用的混合储存系统的稳定行为。

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