A Data-Driven Based Online Learning Control of Voltage Source Converter for DC Microgrids

Ahmed S. Soliman, Mahmoud M. Amin, Fayez F.M. El-Sousy, Osama A. Mohammad

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

14 Scopus citations

Abstract

The paper introduces the control and operation of a grid-connected converter with an energy storage system. A complete mathematical model is presented for a converter and its control. The system under study is a small microgrid comprising an AC grid that is feeding a DC load through a converter. The converter is connected to the AC grid through RL filter. On the DC side an energy storage system ESS is connected to the DC bus. Classical linear controllers have limitations due to their slow transient performance and low robustness against parameter variations and load disturbances. In this paper, a machine learned controllers are used to deal with those drawbacks of the traditional controller. First, a study for conventional nested loop Proportional Integral for both outer and inner loops PI-PI controller is introduced. Then, a Data Driven Online Learning (DDOL) controller is proposed. This controller is a Proportional Integral Neural Network (PI-NN) that is used to enhance the system performance in terms of dynamic and steady-state responses. A comparison between the normal traditional PI-PI controller and the proposed DDOL ones is made under different operating scenarios. The converter control is tested under different operational conditions, and its dynamic and steady-state behavior is analyzed. The model is done through a MATLAB Simulink to check the normal operation of the network in a grid-connected mode under different load disturbances and AC input voltage. The results are showing that the intelligent controller can achieve the set reference points with better performance in terms of both dynamic and steady-state responses.

Original languageEnglish
Title of host publication21st IEEE International Conference on Environment and Electrical Engineering and 2021 5th IEEE Industrial and Commercial Power System Europe, EEEIC / I and CPS Europe 2021 - Proceedings
EditorsZbigniew M. Leonowicz
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665436120
DOIs
StatePublished - 2021
Event21st IEEE International Conference on Environment and Electrical Engineering and 2021 5th IEEE Industrial and Commercial Power System Europe, EEEIC / I and CPS Europe 2021 - Bari, Italy
Duration: 7 Sep 202110 Sep 2021

Publication series

Name21st IEEE International Conference on Environment and Electrical Engineering and 2021 5th IEEE Industrial and Commercial Power System Europe, EEEIC / I and CPS Europe 2021 - Proceedings

Conference

Conference21st IEEE International Conference on Environment and Electrical Engineering and 2021 5th IEEE Industrial and Commercial Power System Europe, EEEIC / I and CPS Europe 2021
Country/TerritoryItaly
CityBari
Period7/09/2110/09/21

Keywords

  • Energy Storage
  • Intelligent Controllers
  • Machine Learning
  • Microgrid
  • Neural Networks
  • Power Converters

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