Demonstration of bidirectional charging using ISO 15118-20

Kristian Sevdari; Rasmus Meier Knudsen; Gabriel Fabbri; Kristoffer Laust Pedersen; Abdesslam Alami; Mattia Marinelli

Demonstration of bidirectional charging using ISO 15118-20

Kristian Sevdari
, Rasmus Meier Knudsen
, Gabriel Fabbri
, Kristoffer Laust Pedersen
, Abdesslam Alami
, Mattia Marinelli

MonTa Biosciences Aps
Watt&Well

Research output: Contribution to conference › Paper › Research › peer-review

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Abstract

This project shows a cutting-edge bidirectional charger from Watt&Well, compatible with CHAdeMO and
CCS2 plugs and compliant with the ISO 15118-20 standard. Laboratory testing at the Technical University
of Denmark and ElaadNL paired the charger with Keysight and Trialog emulators and commercial vehicles
(Kia EV9 prototype, EV9 production, EV3, Nissan Leaf). Interoperable energy transfer was achieved,
including 11 kW vehicle-to-grid discharge with the EV9 and an 800 V emulator, validating automatic service
negotiation and dynamic power reversal. The study confirms that ISO 15118-20 bidirectional charging is
technically mature, highlights remaining certificate-management barriers, and positions EVs as reliable,
distributed storage assets that can support renewable integration and grid stability, enabling fast field
deployment.

Original language	English
Publication date	2025
Number of pages	9
Publication status	Published - 2025
Event	38th International Electric Vehicle Symposium and Exhibition - Göteborg, Sweden Duration: 15 Jun 2025 → 18 Jun 2025

Conference

Conference	38th International Electric Vehicle Symposium and Exhibition
Country/Territory	Sweden
City	Göteborg
Period	15/06/2025 → 18/06/2025

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

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@conference{d64a7ba268604006be7ad43f9a7a45f1,

title = "Demonstration of bidirectional charging using ISO 15118-20",

abstract = "This project shows a cutting-edge bidirectional charger from Watt\&Well, compatible with CHAdeMO and CCS2 plugs and compliant with the ISO 15118-20 standard. Laboratory testing at the Technical University of Denmark and ElaadNL paired the charger with Keysight and Trialog emulators and commercial vehicles (Kia EV9 prototype, EV9 production, EV3, Nissan Leaf). Interoperable energy transfer was achieved, including 11 kW vehicle-to-grid discharge with the EV9 and an 800 V emulator, validating automatic service negotiation and dynamic power reversal. The study confirms that ISO 15118-20 bidirectional charging is technically mature, highlights remaining certificate-management barriers, and positions EVs as reliable, distributed storage assets that can support renewable integration and grid stability, enabling fast field deployment.",

author = "Kristian Sevdari and Knudsen, \{Rasmus Meier\} and Gabriel Fabbri and Pedersen, \{Kristoffer Laust\} and Abdesslam Alami and Mattia Marinelli",

year = "2025",

language = "English",

note = "38th International Electric Vehicle Symposium and Exhibition, EVS38 ; Conference date: 15-06-2025 Through 18-06-2025",

}

TY - CONF

T1 - Demonstration of bidirectional charging using ISO 15118-20

AU - Sevdari, Kristian

AU - Knudsen, Rasmus Meier

AU - Fabbri, Gabriel

AU - Pedersen, Kristoffer Laust

AU - Alami, Abdesslam

AU - Marinelli, Mattia

PY - 2025

Y1 - 2025

N2 - This project shows a cutting-edge bidirectional charger from Watt&Well, compatible with CHAdeMO and CCS2 plugs and compliant with the ISO 15118-20 standard. Laboratory testing at the Technical University of Denmark and ElaadNL paired the charger with Keysight and Trialog emulators and commercial vehicles (Kia EV9 prototype, EV9 production, EV3, Nissan Leaf). Interoperable energy transfer was achieved, including 11 kW vehicle-to-grid discharge with the EV9 and an 800 V emulator, validating automatic service negotiation and dynamic power reversal. The study confirms that ISO 15118-20 bidirectional charging is technically mature, highlights remaining certificate-management barriers, and positions EVs as reliable, distributed storage assets that can support renewable integration and grid stability, enabling fast field deployment.

AB - This project shows a cutting-edge bidirectional charger from Watt&Well, compatible with CHAdeMO and CCS2 plugs and compliant with the ISO 15118-20 standard. Laboratory testing at the Technical University of Denmark and ElaadNL paired the charger with Keysight and Trialog emulators and commercial vehicles (Kia EV9 prototype, EV9 production, EV3, Nissan Leaf). Interoperable energy transfer was achieved, including 11 kW vehicle-to-grid discharge with the EV9 and an 800 V emulator, validating automatic service negotiation and dynamic power reversal. The study confirms that ISO 15118-20 bidirectional charging is technically mature, highlights remaining certificate-management barriers, and positions EVs as reliable, distributed storage assets that can support renewable integration and grid stability, enabling fast field deployment.

M3 - Paper

T2 - 38th International Electric Vehicle Symposium and Exhibition

Y2 - 15 June 2025 through 18 June 2025

ER -

Demonstration of bidirectional charging using ISO 15118-20

Abstract

Conference

UN SDGs

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