Dynamic Transient Power Sharing in Grid-Connected DC Microgrid

This paper proposes an extended droop control strategy for dynamic transient power-sharing between supercapacitor (SC) and AC grid to manage the power demand in the DC microgrid. The proposed control strategy utilizes a virtual impedance droop structure with the SC converter and a virtual resistor d...

Full description

Saved in:
Bibliographic Details
Published in2020 IEEE Sustainable Power and Energy Conference (iSPEC) pp. 826 - 831
Main Authors Pokharel, Kabindra, Sapkota, Sonee, Wang, Yufeng, Kang, Zhen, Huang, Ming, Li, Weilin, Wu, Donghua, Yan, Ming, Fan, Kai, Wang, Yi
Format Conference Proceeding
LanguageEnglish
Published IEEE 23.11.2020
Subjects
Dynamic scheduling
Dynamic transient power-sharing
extended droop control
grid-connected DC microgrid
Microgrids
Power demand
Rectifiers
Resource management
supercapacitor
Supercapacitors
Transient analysis
Online AccessGet full text

Cover

More Information
Summary:This paper proposes an extended droop control strategy for dynamic transient power-sharing between supercapacitor (SC) and AC grid to manage the power demand in the DC microgrid. The proposed control strategy utilizes a virtual impedance droop structure with the SC converter and a virtual resistor droop structure with the grid rectifier, which are responsible for splitting the load power into transient and average load power, respectively. Load transient caused by a sudden change in the load is buffered by supercapacitor and additional average load power demand is supplied by the grid. The working methods of the proposed control strategy and the design of the system are explained, and theoretical analyses are verified by simulations.
DOI:10.1109/iSPEC50848.2020.9351226