Periodic Reporting for period 2 - iSTORMY (Interoperable, modular and Smart hybrid energy STORage systeM for stationarY applications)
Reporting period: 2022-06-01 to 2023-05-31
The electricity grid is rapidly evolving to accommodate various new assets and energy storage is one of the key enabling technologies in this transition. Solar, wind, decentralised grids, different ways of storing energy, increasing electricity demand and new Electric vehicle (EV) charging infrastructures are all unfolding, leading to new challenges to keep the grid reliable and stable. Overcoming these challenges leads to different energy storage requirements in terms of energy, power, duration and cycle frequency. To define these requirements, the following issues need to be addressed:
• How to select and combine different batteries with different power, energy, voltage and lifetime?
• How to integrate the batteries with different voltages with appropriate power electronics in an efficient, reliable and cost-effective way?
• How to optimally use the entire system and determine when which battery has to be used, for which service?
Power electronic converters and their control enable many system functionalities and form the interface with the batteries but are often neglected. With the market growing into many different use-cases, there is a need for reliable, modular, and universal power electronics interface solutions that seamlessly integrate with all system components and the electricity grid. Also, the usage of the batteries is critical in terms of system lifetime, and enabling an optimal control of their operation based on detailed aging information and needed grid services is crucial.
Solving these aspects will help society to facilitate the energy transition, increasing societal acceptance of renewable and make Europe even more autonomous in terms of energy supplies (crucial aspect facing the unstable political situation of 2022/2023).
iSTORMY addresses these challenges by developing an interoperable and modular Hybrid Energy Storage System (HESS), by demonstrating various use cases and seamlessly interfacing the grid to provide multiple services, such as a combination of load levelling, frequency regulation, provision of backup power, at minimum cost.
• How to select and combine different batteries with different power, energy, voltage and lifetime?
• How to integrate the batteries with different voltages with appropriate power electronics in an efficient, reliable and cost-effective way?
• How to optimally use the entire system and determine when which battery has to be used, for which service?
Power electronic converters and their control enable many system functionalities and form the interface with the batteries but are often neglected. With the market growing into many different use-cases, there is a need for reliable, modular, and universal power electronics interface solutions that seamlessly integrate with all system components and the electricity grid. Also, the usage of the batteries is critical in terms of system lifetime, and enabling an optimal control of their operation based on detailed aging information and needed grid services is crucial.
Solving these aspects will help society to facilitate the energy transition, increasing societal acceptance of renewable and make Europe even more autonomous in terms of energy supplies (crucial aspect facing the unstable political situation of 2022/2023).
iSTORMY addresses these challenges by developing an interoperable and modular Hybrid Energy Storage System (HESS), by demonstrating various use cases and seamlessly interfacing the grid to provide multiple services, such as a combination of load levelling, frequency regulation, provision of backup power, at minimum cost.
As reported in more details in the Core part of this report (part B), during the second project period there have been several further steps taken towards the achievement of the project technical objectives.
The work performed since the beginning of the project and up to M30, has been focused (as planned) on:
- Definition of KPIs and specification for system and components (WP1) completed in RP1
- Building an efficient and flexible hybrid battery pack including Battery Management System (BMS) with new functionality (from TRL4 to TRL6) The Hybrid Energy Storage System (HESS) has been designed, produced and functionally tested. It is based on modular concept, both for the high-energy and the high-power part. Additionally, new algorithms (advanced SoX estimation and the Advanced Diagnostics Protocol (ADP)) have been implemented in its Battery Management System (BMS). These activities have been completed within RP2 and are linked to WP2.
- Design of a reliable and long-life modular power electronics (from TRL4 to TRL6) Finalization of the Digital Twin modelling with system-level closed-loop modelling. Functional prototypes (full power, closed-loop) for both PE interfaces have been built and tested. Complete lifetime assessment achieved for a specific use case. Only few activities are pending to be completed; linked to WP3.
- Development of a universal hybrid battery Energy Management System (EMS) (From TRL4 to TRL6) for increased system lifespan and performance, incl. underlying state functions and controls. Standard EMS finalized, incl. use case specific functions. Self-healing EMS developed. EMS hardware (HW) developed. Both standard and self-healing EMSs tested and implemented on HW. Most activities are completed and they are linked to WP4.
- System demonstration preliminary discussions took place on the system integration for design of the container (WP5), based on inputs from WP2, WP3 and WP4.
The work performed since the beginning of the project and up to M30, has been focused (as planned) on:
- Definition of KPIs and specification for system and components (WP1) completed in RP1
- Building an efficient and flexible hybrid battery pack including Battery Management System (BMS) with new functionality (from TRL4 to TRL6) The Hybrid Energy Storage System (HESS) has been designed, produced and functionally tested. It is based on modular concept, both for the high-energy and the high-power part. Additionally, new algorithms (advanced SoX estimation and the Advanced Diagnostics Protocol (ADP)) have been implemented in its Battery Management System (BMS). These activities have been completed within RP2 and are linked to WP2.
- Design of a reliable and long-life modular power electronics (from TRL4 to TRL6) Finalization of the Digital Twin modelling with system-level closed-loop modelling. Functional prototypes (full power, closed-loop) for both PE interfaces have been built and tested. Complete lifetime assessment achieved for a specific use case. Only few activities are pending to be completed; linked to WP3.
- Development of a universal hybrid battery Energy Management System (EMS) (From TRL4 to TRL6) for increased system lifespan and performance, incl. underlying state functions and controls. Standard EMS finalized, incl. use case specific functions. Self-healing EMS developed. EMS hardware (HW) developed. Both standard and self-healing EMSs tested and implemented on HW. Most activities are completed and they are linked to WP4.
- System demonstration preliminary discussions took place on the system integration for design of the container (WP5), based on inputs from WP2, WP3 and WP4.
iSTORMY offers an innovative hybrid solution tailored to the major upcoming challenges in grid management. In particular, challenges that arise in relation to the integration of EV-charging stations and PV. By developing the right software and controlling hardware (EMS, BMS), different Li-ion battery types including 2nd life EV batteries can be optimally integrated into one energy storage system.
The technology developed in iSTORMY will contribute to important environmental and societal impacts by offering a safer, cheaper, and flexible solution capable of adapting to a wide spectrum of applications and scenarios.
iSTORMY is in line with the European Green Deal roadmap, and some of the main environmental and societal impacts.
The technology developed in iSTORMY will contribute to important environmental and societal impacts by offering a safer, cheaper, and flexible solution capable of adapting to a wide spectrum of applications and scenarios.
iSTORMY is in line with the European Green Deal roadmap, and some of the main environmental and societal impacts.