Dynamic Behavior and Stabilization of DC Microgrids With Instantaneous Constant-Power Loads

被引：485

作者：

Kwasinski, Alexis ^{[1
]}

Onwuchekwa, Chimaobi N. ^{[1
]}

机构：

[1] Univ Texas Austin, Dept Elect & Comp Engn, Austin, TX 78713 USA

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2011年 / 26卷 / 03期

关键词：

Constant-power loads; control systems; dc power systems; distributed generation (DG); distributed power architectures; distributed storage; power electronics; stability; DISTRIBUTED GENERATION INTERFACE; BOUNDARY CONTROL; CONTROL STRATEGY; BUCK CONVERTERS; STABILITY; OPERATION; BENEFITS; DESIGN;

D O I：

10.1109/TPEL.2010.2091285

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper explores stability issues in dc microgrids with instantaneous constant-power loads (CPLs). DC microgrids typically have distributed power architectures in which point-of-load converters behave as instantaneous CPLs to line regulating converters located upstream. Constant-power loads introduce a destabilizing effect in dc microgrids that may cause their main bus voltages to show significant oscillations or to collapse. This paper also discusses stabilization strategies to prevent these undesired behaviors from occurring. Mitigating strategies such as load shedding, addition of resistive loads, filters, or energy storage directly connected to the main bus, and control methods are investigated. Advantages and disadvantages of these methods are discussed and recommendations are made. The analysis is verified with simulations and hardware-based experiments.

引用

页码：822 / 834

页数：13

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