Power flow decoupling method of triple‑active‑bridge converter for islanding mode operation in DC microgrid systems

Kwabena Opoku Bempah; Kyung-Wook Heo; Jee-Hoon Jung

Power flow decoupling method of triple‑active‑bridge converter for islanding mode operation in DC microgrid systems

Kwabena Opoku Bempah

Kyung-Wook Heo

Jee-Hoon Jung

Vol. 23, No. 1, pp. 58-67, Jan. 2023

10.1007/s43236-022-00528-5

Triple-active-bridge (TAB)

Power flow decoupling

DC microgrid

Islanding mode

Decoupling matrix

Energy Storage System (ESS)

Abstract

A single multiwinding transformer-based triple-active-bridge (TAB) converter with high power density is a viable candidate for DC microgrid development. However, it comes with a power flow challenge where all the ports are coupled. A power flow decoupling method is proposed for applications of the TAB converter in this paper. The method uses a combination of Proportional Integral (PI) controllers and a lookup table (LUT) that stores decoupling matrices for dynamic decoupling. The proposed decoupling method considers port voltage variations and utilizes only two control variables for voltage regulation. It is designed for application in the islanding mode operation of DC microgrids for DC bus voltage regulation. The feasibility and effectiveness of the proposed power flow decoupling method are verified by simulations and experimental results using an implemented 2 kW TAB converter prototype. Finally, the proposed method shows a 98.95 and a 99.00% improvement in power decoupling according to load variations in the load port.

Statistics

Show / Hide Statistics

Cumulative Counts from September 30th, 2019
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.

Cite this article

[IEEE Style]

K. O. Bempah, K. Heo, J. Jung, "Power flow decoupling method of triple‑active‑bridge converter for islanding mode operation in DC microgrid systems," Journal of Power Electronics, vol. 23, no. 1, pp. 58-67, 2023. DOI: 10.1007/s43236-022-00528-5.

[ACM Style]

Kwabena Opoku Bempah, Kyung-Wook Heo, and Jee-Hoon Jung. 2023. Power flow decoupling method of triple‑active‑bridge converter for islanding mode operation in DC microgrid systems. Journal of Power Electronics, 23, 1, (2023), 58-67. DOI: 10.1007/s43236-022-00528-5.