Design and analysis of closed loop control of power-converters for forming droop-controlled AC–DC subgrids of an islanded hybrid AC

Design and analysis of closed loop control of power-converters for forming droop-controlled AC–DC subgrids of an islanded hybrid AC–DC microgrid

Published:2022-02-16 Issue:2 Volume:24 Page:193-206
ISSN:1553-779X
Container-title:International Journal of Emerging Electric Power Systems
language:en
Short-container-title:

Author:

Shravan R. V. S. E.¹^ORCID,Vyjayanthi C.¹

Affiliation:

1. Electrical and Electronics Engineering , National Institute of Technology Goa , Farmagudi , 403401 Ponda , Goa , India

Abstract

Abstract Hybrid AC–DC microgrid (HMG) is formed by connecting separate AC and DC microgrids with an interlinking converter (IC). In islanded mode of operation of the HMG its AC and DC subgrids are droop controlled to achieve power-sharing. The power flow between the subgrids happens through the IC, which regulates the amount of power being transferred based on the values of the frequency of AC bus voltage and the voltage at the DC bus. This paper presents the utilization of power-electronic converters to form the droop-controlled AC–DC subgrids of an islanded HMG which will be beneficial for further studies of IC and HMG. The detailed design and analysis of the closed-loop control system parameters of both the power converters is presented. The results obtained from simulations carried out in MATLAB/Simulink, and the real-time simulation results obtained by implementation using OPAL-RT OP4500 real-time digital simulator hardware are presented for the verification.

Funder

Science and Engineering Research Board

Publisher

Walter de Gruyter GmbH

Subject

Energy Engineering and Power Technology

Link

https://www.degruyter.com/document/doi/10.1515/ijeeps-2021-0364/pdf

Reference53 articles.

1. Chiradeja, P, Ramakumar, R. An approach to quantify the technical benefits of distributed generation. IEEE Trans Energy Convers 2004;19:764–73. https://doi.org/10.1109/tec.2004.827704.

2. Dugan, RC, McDermott, TE. Distributed generation. IEEE Ind Appl Mag 2002;8:19–25. https://doi.org/10.1109/2943.985677.

3. Dugan, RC, Price, SK. Issues for distributed generation in the US. In: 2002 IEEE Power Engineering Society winter meeting. Conference proceedings. New York, NY, USA: IEEE; 2002:121–6 pp.

4. Piagi, P, Lasseter, RH. Autonomous control of microgrids. In: 2006 IEEE Power Engineering Society general meeting. QC, Canada: IEEE; 2006:8 p.

5. Lasseter, RH, Piagi, P. Microgrid: a conceptual solution. In: 2004 IEEE 35th annual power electronics specialists conference. Aachen, Germany: IEEE; 2004:4285–90 pp.