TY - JOUR

T1 - Optimized Integration of Medium-Voltage Multimegawatt DC Charging Stations

T2 - Concepts, Guidelines and Analysis

AU - Biswas, Sumanta

AU - Gerald, Cham Kpu

AU - Herndler, Barbara

AU - Stahleder, Daniel

AU - Wimmer, Yannick

AU - Makoschitz, Markus

N1 - Publisher Copyright: © 2024 by the authors.

PY - 2024/10/3

Y1 - 2024/10/3

N2 - The integration of multimegawatt fast chargers into local distribution grids is becoming increasingly relevant due to recent initiatives to push for higher charging power, especially for applications like heavy-duty vehicles. However, the high-power capacity of these chargers, especially when multiple units operate simultaneously at specific locations, raises several important considerations for the optimal design and integration of multimegawatt fast chargers. These include, for example, power electronics architectures and dedicated designs, grid stability, and the incorporation of renewable energy systems. Thus, this paper provides a comprehensive analysis of the key factors influencing the optimal integration of these ultra-high-power chargers, looking into impacts on medium-voltage (MV) networks, the design considerations for medium-voltage power electronics in DC chargers, and the potential of renewable energy systems to offset grid demand. Additionally, this paper explores the potential high-level communication requirements necessary for efficient and reliable charger operation, including a proposal for a robust communication interface layer stack. This investigation aims to provide a holistic understanding of the challenges and opportunities associated with integrating multimegawatt fast chargers into existing power systems, offering insights into the enhancement of both performance and sustainability.

AB - The integration of multimegawatt fast chargers into local distribution grids is becoming increasingly relevant due to recent initiatives to push for higher charging power, especially for applications like heavy-duty vehicles. However, the high-power capacity of these chargers, especially when multiple units operate simultaneously at specific locations, raises several important considerations for the optimal design and integration of multimegawatt fast chargers. These include, for example, power electronics architectures and dedicated designs, grid stability, and the incorporation of renewable energy systems. Thus, this paper provides a comprehensive analysis of the key factors influencing the optimal integration of these ultra-high-power chargers, looking into impacts on medium-voltage (MV) networks, the design considerations for medium-voltage power electronics in DC chargers, and the potential of renewable energy systems to offset grid demand. Additionally, this paper explores the potential high-level communication requirements necessary for efficient and reliable charger operation, including a proposal for a robust communication interface layer stack. This investigation aims to provide a holistic understanding of the challenges and opportunities associated with integrating multimegawatt fast chargers into existing power systems, offering insights into the enhancement of both performance and sustainability.

KW - battery storage systems

KW - communication strategies

KW - distribution grid

KW - medium-voltage megawatt charging stations

KW - power electronics

KW - renewable energy systems

UR - http://www.scopus.com/inward/record.url?scp=85207324866&partnerID=8YFLogxK

U2 - 10.3390/wevj15100450

DO - 10.3390/wevj15100450

M3 - Article

AN - SCOPUS:85207324866

VL - 15.2024

JO - World electric vehicle journal

JF - World electric vehicle journal

SN - 2032-6653

IS - 10

M1 - 450

ER -