Large Signal Stability Analysis Tools in DC Power Systems With Constant Power Loads and Variable Power Loads—A Review
Large Signal Stability Analysis Tools in DC Power Systems With Constant Power Loads and Variable Power Loads—A Review
复制标题
DOI：
10.1109/tpel.2011.2170202
复制
发表时间：
2012-04
影响因子：
6.7
通讯作者：
D. Marx;Pierre Magne;B. Nahid-Mobarakeh;S. Pierfederici;B. Davat
中科院分区：
文献类型：
--
作者：
D. Marx;Pierre Magne;B. Nahid-Mobarakeh;S. Pierfederici;B. Davat
电动机驱动和电力电子变换器在先进的电力系统中越来越普遍。在这些系统中使用无源LC滤波器来减少功率波动。这些过滤器通常具有较差的阻尼，以减少损耗，以及系统的尺寸/重量和成本。如果负载功率超过取决于滤波器参数的功率限制，则会导致不稳定现象。本文的目的是提供一种工具，允许对直流电力系统进行大信号稳定性分析。这些工具允许估计系统操作点的吸引域。本文将表明，这种大信号稳定性分析为系统设计提供了有用的提示，以优化恒功率和变功率负载的稳定性准则。研究了负载动态对系统稳定性的影响。一个电驱动器连接到直流电源通过一个不良阻尼LC滤波器被用作一个案例研究。仿真和实验验证了分析结果。
Electric motor drives and power electronic converters have become increasingly common in advanced power systems. Passive LC filters are used in these systems to reduce the power ripples. These filters are usually poorly damped for reducing the losses as well as the size/weight and the cost of the system. This leads to instability phenomena if the load power exceeds a power limit depending on the filter parameters. The purpose of this paper is to present tools allowing large signal stability analysis of a dc power system. These tools allow estimation of the domain of attraction of the system operating point. It will be shown that this large signal stability analysis gives useful hints on the design of the system to optimize the stability criteria for constant and variable power loads. The impact of the load dynamics on stability is also studied. An electric drive connected to a dc power supply through a poorly damped LC filter is used as a case study. The simulations and the experimentations confirm the analytical results.