A_grid_interface_current_control_strategy_for_DC_microgrids.pdf (472.26 kB)
A grid interface current control strategy for DC microgrids
journal contribution
posted on 2021-10-05, 15:35 authored by Muhannad Alshareef, Zhengyu LinZhengyu Lin, Fulong Li, Fei WangIn this paper, a grid interface current control strategy is presented for a DC microgrid, which aims to reduce the disturbance from PV generation and the load variation to the main grid without a grid interface converter. The grid interface current is directly controlled by a battery DC-DC converter within the DC microgrid. Based on a comprehensive analysis of the battery DCDC converter and interface current control, the control system has been mathematically modelled. This enabled two transfer functions to be derived that reflect the dynamic response of the inductor current to the duty cycle variation (inner loop), and the dynamic response of the grid interface current to the inductor current variation (outer loop). Experimental study has been done to assess the effectiveness of the proposed control strategy. The experimental results indicate that the proposed control strategy has a good performance to control the grid interface current without an interface converter, regardless the variations of both PV and the load conditions.
Funding
Plug-and-play Low Voltage DC Microgrid for Cheap and Clean Energy
Engineering and Physical Sciences Research Council
Find out more...European Union’s Horizon 2020 research and innovation programme under grant agreement No.734796
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
CES Transactions on Electrical Machines and SystemsVolume
5Issue
3Pages
249-256Publisher
China Electrotechnical Society (CES) and the Institute of Electrical Engineering of the Chinese Academy of SciencesVersion
- VoR (Version of Record)
Rights holder
© CESPublisher statement
This is an Open Access Article.Acceptance date
2021-03-09Publication date
2021-09-28Copyright date
2021ISSN
2096-3564Publisher version
Language
- en
Depositor
Dr Zhengyu Lin. Deposit date: 10 September 2021Usage metrics
Categories
No categories selectedLicence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC