Abstract
Low-inertia dc microgrids often rely on storage devices to buffer energy and handle abrupt load changes. An alternative approach involves the concept of power buffers, power electronics converters with bulky storage components that precede the final point-of-load converters, and decouple the grid and load dynamics. Proper adjustment of the input impedances of power buffers helps to shape the trajectory of the transient imposed on a dc microgrid. A communication network facilitates information exchange among active loads (loads augmented with power buffers). Such group information helps to collectively respond to any load change; an optimal response with the least energy extract from individual buffers. A game-Theoretic performance function is defined for active loads. Then, a distributed control policy simultaneously minimizes all performance functions. A low-voltage dc microgrid, simulated in MATLAB/Simulink environment, is used to study the effectiveness of the proposed methodology.
| Original language | English |
|---|---|
| Pages (from-to) | 882-895 |
| Number of pages | 14 |
| Journal | IEEE Transactions on Energy Conversion |
| Volume | 31 |
| Issue number | 3 |
| Early online date | 22 Mar 2016 |
| DOIs | |
| Publication status | Published - Sept 2016 |
| Externally published | Yes |
Funding
Y. D. Song and L. Fan have been supported by the Major State Basic Research Development Program 973 (No. 2012CB215202), and by Fundamental Research Funds for the Central Universities (2013YJS021), China. A. Davoudi and V. Nasirian have been supported by the National Science Foundation under grant ECCS-1405173 and by the U.S. Office of Naval Research under grant N00014-14-1-0718. F. L. Lewis and H. Modares have been supported by the National Science Foundation under grant ECCS1405173, by the U.S. Office of Naval Research under grant N00014-13-1- 0562, and by the Army Research Office under grant W911NF-11-D-0001.
Keywords
- DC distribution system
- multi-player games
- power buffer