Abstract
Electric ships have become popular for the purpose of reducing greenhouse gas emissions and improving energy efficiency. The DC shipboard microgrid (SMG) provides a good solution to integrate the battery energy storage system (BESS), generators, electric propulsion system, and shipboard loads. In order to avoid over-discharging and over-charging of batteries and prolong the battery lifetime, it is necessary to balance the battery state-of-charge (SoC). This paper proposes a decentralized SoC balance method based on droop control in the DC SMG. The battery SoC balancing speed is regulated by an exponent parameter n, and larger n leads to faster SoC balance. In addition, the voltage drop caused by the proposed SoC-based droop control can be ensured within the allowed value in the entire SoC range. Verification of the proposed method is implemented in Matlab/Simulink model, which consists of two batteries. The simulation results verify the effectiveness of the proposed method.
Original language | English |
---|---|
Title of host publication | 2021 IEEE 2nd China International Youth Conference on Electrical Engineering, CIYCEE 2021 |
Number of pages | 6 |
Publisher | IEEE Signal Processing Society |
Publication date | 2021 |
ISBN (Print) | 978-1-6654-0065-7 |
ISBN (Electronic) | 978-1-6654-0064-0 |
DOIs | |
Publication status | Published - 2021 |
Event | 2nd IEEE China International Youth Conference on Electrical Engineering, CIYCEE 2021 - Chengdu, China Duration: 15 Dec 2021 → 17 Dec 2021 |
Conference
Conference | 2nd IEEE China International Youth Conference on Electrical Engineering, CIYCEE 2021 |
---|---|
Country/Territory | China |
City | Chengdu |
Period | 15/12/2021 → 17/12/2021 |
Series | 2021 IEEE 2nd China International Youth Conference on Electrical Engineering, CIYCEE 2021 |
---|
Bibliographical note
Publisher Copyright:© 2021 IEEE.
Keywords
- battery energy storage system
- DC shipboard microgrid
- droop control
- state-of-charge