TY - GEN
T1 - Stability analysis and controller design of DC microgrids with constant power loads
AU - Herrera, Luis
AU - Wang, Jin
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/5/8
Y1 - 2015/5/8
N2 - DC microgrids consist of multiple power electronic converter units interconnected in a network with sources and loads. They arise naturally in the power systems of electric ships, aircrafts, etc. The main focus of this work is to study the stability of power converters based dc microgrids. These high switching frequency electronics are controlled in a way as to maintain constant voltage, current, or power to the load. Due to their high bandwidth, they can be simplified as a constant power load. For this reason, a nonlinear system arises where it is no longer satisfactory to assume local stability. Methods presented in literature will be reviewed and a method based on Semidefinite Programming (SDP) will be used to simplify the analysis and stability study of these dc microgrids. Furthermore, a robust controller formulation based on a similar SDP is proposed in order to guarantee and expand the stability region using energy storage.
AB - DC microgrids consist of multiple power electronic converter units interconnected in a network with sources and loads. They arise naturally in the power systems of electric ships, aircrafts, etc. The main focus of this work is to study the stability of power converters based dc microgrids. These high switching frequency electronics are controlled in a way as to maintain constant voltage, current, or power to the load. Due to their high bandwidth, they can be simplified as a constant power load. For this reason, a nonlinear system arises where it is no longer satisfactory to assume local stability. Methods presented in literature will be reviewed and a method based on Semidefinite Programming (SDP) will be used to simplify the analysis and stability study of these dc microgrids. Furthermore, a robust controller formulation based on a similar SDP is proposed in order to guarantee and expand the stability region using energy storage.
UR - https://www.scopus.com/pages/publications/84937922610
U2 - 10.1109/APEC.2015.7104425
DO - 10.1109/APEC.2015.7104425
M3 - Conference contribution
AN - SCOPUS:84937922610
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 691
EP - 696
BT - APEC 2015 - 30th Annual IEEE Applied Power Electronics Conference and Exposition
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 30th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2015
Y2 - 15 March 2015 through 19 March 2015
ER -