Control of a Three-Port DC-DC Converter for Grid Connected PV-Battery Applications

Peter Iwer Hoedt Karstensen, Kevin Tomas Manez, Zhe Zhang

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Abstract

A control strategy for an energy management system (EMS) of a household nanogrid is presented in this paper. The proposed EMS is based on a state diagram. A three port converter (TPC) with direct storage capability is chosen and the states together with the state transitions are defined. The state diagram signals to two algorithms of which one calculates the battery current reference and the other allows the photovoltaic (PV) system to operate at the maximum power point (MPP) at all times. An extensive model has been implemented in MATLAB/Simulink using generic models to test the proposed control method. Results show a system which at all times follows a specified power exchange with the grid with a overshoot in power of 500W and worst case settling time of 500ms.
Original languageEnglish
Title of host publicationProceedings of 3rd International Conference on Intelligent Green Building and Smart Grid
Number of pages4
PublisherIEEE
Publication date2018
ISBN (Print)9781538606605
DOIs
Publication statusPublished - 2018
Event3rd International Conference on Intelligent Green Building and Smart Grid - National Ilan University, Yilan, Taiwan, Province of China
Duration: 22 Apr 201825 Apr 2018
http://igbsg.ntust.edu.tw/index.php

Conference

Conference3rd International Conference on Intelligent Green Building and Smart Grid
LocationNational Ilan University
CountryTaiwan, Province of China
CityYilan
Period22/04/201825/04/2018
Internet address

Keywords

  • EMS
  • PV-battery application
  • State diagram
  • Three port converter

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