Dynamic Transient Power Allocation Strategy in On/Off-Grid DC Microgrid

For on/off-grid DC microgrid, this paper proposes an improved droop control strategy combined with DC bus signaling to split transient and average load power between supercapacitor (SC), battery, and grid. SC converter with virtual impedance droop is responsible for supplying transient load power, w...

Full description

Saved in:
Bibliographic Details
Published in2020 IEEE 3rd Student Conference on Electrical Machines and Systems (SCEMS) pp. 863 - 868
Main Authors Pokharel, Kabindra, Sapkota, Sonee, Li, Weilin, Wu, Donghua, Yan, Ming, Wang, Yi
Format Conference Proceeding
LanguageEnglish
Published IEEE 04.12.2020
Subjects
Batteries
DC bus signaling (DBS)
Dynamic scheduling
dynamic transient power-sharing
improved droop control
Microgrids
on/off-grid DC microgrid
Rectifiers
Resource management
supercapacitor
Supercapacitors
Transient analysis
Online AccessGet full text

Cover

More Information
Summary:For on/off-grid DC microgrid, this paper proposes an improved droop control strategy combined with DC bus signaling to split transient and average load power between supercapacitor (SC), battery, and grid. SC converter with virtual impedance droop is responsible for supplying transient load power, whereas battery converter and grid rectifier, both with virtual resistor droop, are responsible for additional average load power in off-grid and on-grid modes, respectively. DC bus signaling is implemented for the smooth transition of DC microgrid from off-grid to on-grid state. The working methods for the proposed control strategy and the design of the system are explained, and theoretical analyses are verified by simulations.
DOI:10.1109/SCEMS48876.2020.9352372