ICDCM2019 Full Paper_1.pdf (639.61 kB)
Download fileTerminal capacitor compensation based stability design for DC microgrids
conference contribution
posted on 11.01.2021, 12:04 authored by Fulong Li, Zhengyu LinZhengyu Lin, Alian Chen, Jiande WuThis paper investigates the detailed elements of a DC microgrid that might cause instability, and proposes a stabilizing guidance based on the passive stability criterion. For illustration purpose, the terminal output impedance model of a source side power converter under double loop with droop control is built, and its frequency characteristics are analyzed. It is found that the instant high power absorption from the microgrid might make the source side power converter's output to oscillate. The details of how the circuit and control elements in the source side impact the terminal impedance are illustrated. This paper shows that the stability of plug and play performance of DC microgrid can be guaranteed with the proposed stabilization methods. A Matlab/Simulink model is used to validate the analysis.
Funding
Plug-and-play Low Voltage DC Microgrid for Cheap and Clean Energy
Engineering and Physical Sciences Research Council
Find out more...Royal Society International Exchanges (IE161121)
European Union’s Horizon 2020 research and innovation programme under grant agreement No. 734796
History
School
- Mechanical, Electrical and Manufacturing Engineering