带阻容负载的能量存储系统建模与稳定性分析  

Modeling and Stability Analysis of Energy Storage System with Resistance-capacitance Load

作　　者：张逸成[1] 吴璐璐[1] 胡晓军[1] 梁海泉[1] 

机构地区：[1]同济大学电信学院控制理论与控制工程专业,上海201804

出　　处：《系统仿真学报》2010年第3期733-737,共5页Journal of System Simulation

基　　金：国家自然科学基金(50877054/E07)

摘　　要：阻容负载提高了能量存储系统阶次,对稳定性不利。为分析其稳定性,建立了降压模式下带阻容性负载的状态空间平均模型、小信号与大信号等效电路模型;通过分析小信号模型进行了系统补偿,提高了稳定裕量;通过大信号模型验证了补偿系统在大扰动下的稳定性。针对Simulink中无理想交直流变压器模块,提出了一种理想交直流变压器模型构造方法,还提出了一种新颖的基于此构造方法的负载参数动态仿真模型,可解决Simulink中动态参数负载仿真困难问题。这里建立的阻容性负载模型精度可与宏模型基本一致,但仿真效率远高于宏模型。Resistance-capacitance load raises the system order with effects on stability. In order to analyze the stability, the state-space average model and large/small signal equivalent circuits were built. The system was compensated and the margin was improved by analyzing small signal model. And the stability of compensated system under large signal disturbance was verified via large signal model. Because there was no ideal AC/DC transformer available in Simulink, an ideal AC/DC transformer model was proposed, and a novel variation parameter load model was proposed based on this Mnd of transformer, which could be used to solve the hard simulation problem of the variation parameter load in Simulink. The precision of the models with variation parameter load is as same as the macro model, but the simulation efficiency of it is much higher.

关 键 词：阻容负载 稳定性 大小信号模型 参数动态仿真 动态负载 

分 类 号：TP202.1[自动化与计算机技术—检测技术与自动化装置] TP271.7[自动化与计算机技术—控制科学与工程]