Looped-chain-based active current sharing strategy in DC microgrids

• Autorzy: Li D. , Liu Y. , Gu Y. , Qi H.

Identyfikatory

DOI

10.1515/aee-2017-0042

• Języki publikacji: EN

Abstrakty

EN

The integration of renewable energy sources in modern electric grids have drawn increasing attention nowadays. In order to effectively manage large-scale renewable energy sources and achieve flexible and efficient operation, the concept of microgrids have been proposed. Considering the nature of DC outputs in many distributed energy resources (DERs), DC microgrids have been extensively studied in the past years. Among the operational issues in DC microgrids, current sharing issues have become an important topic since it is highly relevant to the operation of DC microgrids. By adopting a proper design of current sharing strategy in DC microgrids, the current rating violations in each interface converter can be successfully avoided. In this paper, a looped-chainbased active current sharing strategy is proposed to realize high accuracy current sharing in DC microgrids. In particular, the output current is shared between the neighboring interface converters. Hence, following a clockwise or counter-clockwise order, a loopedchain- based control diagram can be established to share the reference value of the output current. A final status in the whole DC microgrid is that the output current of every interface converter is equalized. Hence, the desired current sharing objective can be satisfied. A MATLAB simulation model is established to verify the proposed loopedchain- based active current sharing strategy in DC microgrids.

Słowa kluczowe

EN

active current sharing; DC microgrids; looped control diagram

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2017
• Tom: Vol. 66, nr 3
• Strony: 559--569
• Opis fizyczny: Bibliogr. 12 poz., rys., tab., wz.

Twórcy

autor

Li D.

• Shijiazhuang Institute of Railway Technology

autor

Liu Y.

• Northeast Forestry University

autor

Gu Y.

• Northeast Forestry University

autor

Qi H.

• Northeast Forestry University

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).