User Perspective on Bidirectional Charging—Insights from the
In this article, we present results from different studies and provide insights as well as implications for a user-friendly future development of the bidirectional charging technology.
The project Bidirectional Charging Management (BCM) aims to demonstrate the benefit of this technology. The research project BCM was launched in May 2019 and is scheduled to end in October 2022. The objective of BCM is the development and testing of a holistic, user-oriented way of integrating bidirectional EVs in the German energy system.
However, the focus of the project lies in demonstrating bidirectional charging technology rather than efficiency optimization. Additionally, lower feed-in power from PV during the winter months prevented higher efficiencies for the PV UC.
The decentralized provision of these battery storages provides a possible large flexibility, which can improve power supply reliability and further increase the proportion of renewable energy in overall electricity consumption. A variety of these bidirectional charging use cases (UC) are possible .
Our efficiency analysis suggests that the current non-serial products of EVSE and EV are not yet tailored for the use with comparatively low charging and discharging powers. However, the focus of the project lies in demonstrating bidirectional charging technology rather than efficiency optimization.
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