No Cover Image

Journal article 765 views 111 downloads

A Photovoltaic-Fed DC-Bus Islanded Electric Vehicles Charging System Based on a Hybrid Control Scheme

Han Huang, Senthooran Balasubramaniam, Grazia Todeschini, Surya Santoso

Electronics, Volume: 10, Issue: 10, Start page: 1142

Swansea University Author: Grazia Todeschini

  • 56919.pdf

    PDF | Version of Record

    © 2021 by the authors. This is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license

    Download (5.3MB)

Abstract

Electric vehicle (EV) charging stations fed by photovoltaic (PV) panels allow integration of various low-carbon technologies, and are gaining increasing attention as a mean to locally manage power generation and demand. This paper presents novel control schemes to improve coordination of an islanded...

Full description

Published in: Electronics
ISSN: 2079-9292
Published: MDPI AG 2021
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa56919
Tags: Add Tag
No Tags, Be the first to tag this record!
Abstract: Electric vehicle (EV) charging stations fed by photovoltaic (PV) panels allow integration of various low-carbon technologies, and are gaining increasing attention as a mean to locally manage power generation and demand. This paper presents novel control schemes to improve coordination of an islanded PV-fed DC bus EV charging system during various disturbances, including rapid changes of irradiance, EV connection and disconnection, or energy storage unit (ESU) charging and discharging. A new hybrid control scheme combining the advantages of both master–slave control and droop control is proposed for a charging station supplying 20 EVs for a total power of 890 kW. In addition, a three-level (3L) boost converter with capacitor voltage balance control is designed for PV generation, with the aim to provide high voltage gain while employing a small inductor. The control techniques are implemented in a simulation environment. Various case studies are presented and analysed, confirming the effectiveness and stability of the control strategies proposed for the islanded charging system. For all tested conditions, the operating voltage is maintained within 5% of the rated value.
Keywords: photovoltaic systems; electric vehicles; charging stations; islanded microgrid; droop control
College: Faculty of Science and Engineering
Issue: 10
Start Page: 1142