Imperial College London
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DrYunjieGu

Faculty of Engineering, Department of Electrical and Electronic Engineering

Lecturer in Power Systems
 
 
 
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Contact

 

yunjie.gu Website

 
 
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Location

 

1119Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Gu:2015:10.1109/TPWRS.2014.2360300,
author = {Gu, Y and Li, W and He, X},
doi = {10.1109/TPWRS.2014.2360300},
journal = {IEEE Transactions on Power Systems},
pages = {2623--2632},
title = {Passivity-based control of DC microgrid for self-disciplined stabilization},
url = {http://dx.doi.org/10.1109/TPWRS.2014.2360300},
volume = {30},
year = {2015}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - DC microgrids may have time-varying system structures and operation patterns due to the flexibility and uncertainty of distributed resources. This feature poses a challenge to conventional stability analysis methods, which are based on fixed and complete system models. To solve this problem, the concept of self-disciplined stabilization is introduced in this paper. A common stability discipline is established using the passivity-based control theory, which ensures that a microgrid is always stable as long as this discipline is complied by each individual converter. In this way, the stabilization task is localized to avoid investigating the entire microgrid, thereby providing immunity against system variations. Moreover, a passivity margin criterion is proposed to further enhance the stability margin of the self-disciplined control. The modified criterion imposes a tighter phase restriction to provide explicit phase margins and prevent under-damped transient oscillations. In line with this criterion, a practical control algorithm is also derived, which increases the converter's passivity through voltage feed forward. The major theoretical conclusions are verified by a laboratory DC microgrid test bench.
AU  - Gu,Y
AU  - Li,W
AU  - He,X
DO  - 10.1109/TPWRS.2014.2360300
EP  - 2632
PY  - 2015///
SN  - 0885-8950
SP  - 2623
TI  - Passivity-based control of DC microgrid for self-disciplined stabilization
T2  - IEEE Transactions on Power Systems
UR  - http://dx.doi.org/10.1109/TPWRS.2014.2360300
UR  - https://ieeexplore.ieee.org/document/6936935
VL  - 30
ER  -
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