![\"The](\"https:\/\/blogs.sw.siemens.com\/wp-content\/uploads\/sites\/6\/2025\/01\/Energy_BESS_Sustainability_Renewables_Earth.png\")
<\/a>Battery Energy Storage System (BESS) plays a pivotal role in storing excess energy generated from renewable sources, such as solar and wind, and releasing it when demand peaks. However, the design, optimization, and operation of BESS present a multitude of engineering challenges that require a comprehensive understanding of the complex interactions between various system components.<\/p>\n\n\n\n
Simcenter Amesim, part of the Simcenter System Simulation portfolio, is typically used for system integration combining the different subsystems involved like { renewables + batteries + thermal + HVAC + controls + power electronics + grids }.<\/p>\n\n\n\n
With Simcenter Amesim, you can address and solve all these challenges:<\/p>\n\n\n\n
\ud83d\udcd0 BESS system design, sizing (number of containers, batteries) and validation<\/p>\n\n\n\n
\ud83d\udcda All components available from predefined libraries<\/p>\n\n\n\n
\ud83c\udf9b\ufe0f Controls to balance the loads and consumptions, \u201cEMS\u201d (Energy Management System)<\/p>\n\n\n\n
\u2600\ufe0f Renewables such as solar photovoltaic or wind turbines<\/p>\n\n\n\n
\ud83d\udd0b Batteries with SoC (state of charge), temperatures, SoH (state of health), aging<\/p>\n\n\n\n
\ud83c\udf21\ufe0f\u2744\ufe0f Optimization of the HVAC \/ air-conditioning system performance for the containers<\/p>\n\n\n\n
\u26a1 Connection to the grid\/micro-grid, power converters, inverters<\/p>\n\n\n\n
\ud83c\udfe0 Energy consumption with residentials, electric vehicles, \u2026<\/p>\n\n\n\n
\ud83d\udcb0 Trading strategies and Balancing Mechanisms (BM) \/ energy mix and energy price<\/p>\n\n\n\n
\ud83d\udd2e Predict future \/ forecast (weather, energy price, balancing)<\/p>\n\n\n\n
\u2705 Compliance with regulations, certifications<\/p>\n\n\n\n
\ud83d\udca5 Safety assessments : battery thermal runaway, current peaks, fuses, electric arcs, fires, explosions<\/p>\n\n\n\n
\u231b Sustainability & recycling with second-life batteries (repurposed end-of-life EV batteries)<\/p>\n<\/div>\n<\/div>\n\n\n\n
The users can drag and drop the predefined components (no coding) to assemble them together to get their complete systems. While the execution is very fast \u23f1\ufe0f, it takes only few seconds\/minutes of CPU-time to compute the complete day\/week\/year. With economical aspects or safety included.<\/p>\n\n\n\n
Top things to know<\/h2>\n\n\n\n
A battery energy storage system (BESS) can balance loads between on-peak and off-peak periods. The electricity demand fluctuates depending on the day of the week, time of day, and seasonality.<\/p>\n\n\n\n
As such, when there is a peak electrical demand, prices are at their most expensive level. Alternatively, the energy price is at the standard rate when demand is low during off-peak periods.<\/p>\n\n\n\n
Peak shaving allows users with battery energy storage systems to store power during off-peak periods and discharge during peak times to reduce electricity costs.<\/p>\n\n\n
<\/a>Let\u2019s see how BESS is implemented practically. Knowing users have to manage the design from cells to packs to containers, also the renewable sources & grid aspects with the energy consumers.<\/p>\n\n\n\n
Actually the containers are modular, portable solutions that house batteries in shipping containers for flexible and scalable energy storage. These units are easily deployable to various locations, making them ideal for temporary or remote power needs.<\/p>\n\n\n
<\/a>These containers are full of Lithium-ion batteries. Such Li-ion batteries are small, lightweight and have a high capacity and energy density, requiring minimal maintenance and provide a long lifespan. They can also be rapidly charged and have a low self-discharge rate. The disadvantages include cost, inflammability, intolerance to extreme temperatures, overcharge, and over-discharge.<\/p>\n\n\n\n
The Energy Management System (EMS) controls and monitors the energy flow of the BESS and associated systems. The EMS coordinates the BMS (Battery Management System), inverters and other components by collecting and analyzing data used to manage and optimize the overall system performance.<\/p>\n\n\n
Finally there\u2019s the microgrid software to manage and control localized grid systems, optimizing energy distribution from diverse sources including renewables. It supports real-time analytics and automated controls to maintain stability and performance.<\/p>\n\n\n
<\/a>System Simulation is well-suited to tackling many design requirements. Let\u2019s investigate a bit more, looking at some technical aspects and key tool capabilities.<\/p>\n\n\n\n
Why Simcenter Amesim is perfect for BESS<\/h2>\n\n\n\n
Driven by the emerging needs of the energy market, BESS must become more efficient and reliable while working under new flexible operating patterns.<\/p>\n\n\n\n
Users need to explore BESS digitally to reduce expensive testing time and gain confidence in their products early in the design cycles. At the same time, to stay competitive, BESS must become cheaper to manufacture and operate.<\/p>\n\n\n\n
Actually, BESS systems can be separated into different functions and subsystems. The good news is that Simcenter Amesim offers all the capabilities to address each of them separately, then combine them all together as a second step to get the complete dynamic behavior over different scenarios to investigate.<\/p>\n\n\n
<\/a>Practically there\u2019s a large number of challenges to solve. They come from the usual sizing or thermal management including HVAC or liquid\/air cooling systems, up to more advanced analysis like aging and SoH (state of health) for the batteries over a long period of many years, the connection to the grids\/micro-grids, the power electronics or the Artificial Intelligence (AI) with Reduced Order Models (RM) and Neural Networks.<\/p>\n\n\n
<\/a>Finally, System Simulation ensures the continuity reusing the models and data all over the product development process. Ensuring the interoperability and the good communication between the different departments within your company. It\u2019s the factory of digital twins to solve your engineering pains !<\/p>\n\n\n
<\/a>All the capabilities you need for BESS analysis<\/h2>\n\n\n\n
It\u2019s actually many years that we\u2019ve been successfully representing batteries and electric systems in Simcenter Amesim. It was initially targeted for electric vehicles in the Automotive industry. While there\u2019s now this big trend on-going for reusing similar types of batteries for renewables in the Energy industry.<\/p>\n\n\n
<\/a>So we can adapt the proven technologies to address these new types of BESS applications. It\u2019s mainly a matter of scaling the systems to these new requirements ([MWh] or [GWh] capacities instead of [kWh] for passenger cars) and to package the digital twins to represent the different BESS content (racks, containers, complete system, \u2026).<\/p>\n\n\n
<\/a>We don\u2019t start from scratch but from an existing database of ready-to-use templates. Either done 100% with System Simulation including some discretized thermal networks with lumped parameter models. Or going a bit further in the analysis thanks to some 1D\/3D couplings (typically with 3D CFD for detailed fluids and thermal analysis), Reduced Order Model (ROM) or Artificial Intelligence (AI) with Neural Networks. So that users can analyze long scenarios executed very fast in few seconds of CPU-time.<\/p>\n\n\n
<\/a>\ud83d\udd0b \ud83e\uddef\ud83d\udd25 Users can also investigate the battery thermal runaways, which is a key safety concern. System Simulation can easily evaluate the impact of the cell thermal behaviors that help or prevent the propagation inside the battery module.<\/p>\n\n\n
<\/a>Cooling of the container with HVAC (air-conditioning) or liquid\/air cooling is also possible, as well as the influence of the busbars. Users can even combine directly 3D CFD computations within Simcenter Amesim using \u201ceCFD\u201d (\u201cembedded CFD\u201d) which is Simcenter STAR-CCM+ directly integrated into Simcenter Amesim to get the 3D streamlines, velocity profiles and temperature gradients combining the 1D subsystems and controls inside the 3D environment of the containers (with inlet and outlet locations, impact of the sun power radiation at top on the container roof, \u2026). So that you\u2019ll get all the details from the high-fidelity 3D CFD model, still preserving the advantages of the System Simulation description with fast CPU-time.<\/p>\n\n\n
<\/a>Finally, the configuration of racks, modules, compartments in the BESS containers is similar to what has been done for years for Data Center cooling with Simcenter Amesim for Virtual Commissioning combining System Simulation and PLCs within a unique framework. It allows testing upfront your control logics and scenarios, to be sure you\u2019ll be successful when implemented on the shop floor with the appropriate Software customized for the associated Hardware devices. Doing so, you\u2019ll get optimal results in operations from the first try!<\/p>\n\n\n
<\/a>Complete system integration<\/h2>\n\n\n\n
\u267b\ufe0f\u26a1\ud83d\udcb0 Like for Green Hydrogen production<\/a>, users can predict the BESS performances in few seconds on realistic scenarios with the production over months thanks to wind turbines, solar panels, \u2026. At the end, the green energy is produced, stored in the BESS and delivered to the grid when optimally needed, to be used for residentials (buildings, houses) or plant facilities \/ factories. So that your carbon footprint is significantly reduced.<\/p>\n\n\n\n The model shown here predicts the performances of the system depending on the meteorological (weather) conditions and the localization of the system. After running quick simulations executed in few minutes for the complete 1 year (12 months), several architectures or component sizing choices can be rated to select the most efficient and profitable designs. What a valuable achievement!<\/p>\n\n\n \u2600\ufe0f\u26a1 At input side, you can predict accurately the intermittent renewables sources like solar panels. So anyone can simulate his unique operating conditions to know how the system operates. You can size the solar panel from the number of solar arrays, the number of cells and the single cell area. You can enter the city you\u2019re located \ud83c\udf0f or its GPS position \ud83d\udef0\ufe0f, the weather conditions if it\u2019s cloudy or not \ud83c\udf25\ufe0f, the ground reflection coefficient or the turbidity factor. Then you\u2019ll get the energy produced \u267b\ufe0f over the day or over the months \ud83d\udcc6 so you\u2019ll know the results for all the seasons \ud83c\udf42\u2603\ufe0f\ud83c\udf31\ud83c\udf3b.<\/p>\n\n\n \u267b\ufe0f\u26a1\ud83d\udd0c At the output side, you can also go more towards the \u201cpure\u201d electrical aspects, up to the power electronics (inverters, AC\/DC converters, \u2026) and microgrids. You can check your power mix over months. For example, to compare the balance in December (winter) compared to June (summer). To finally verify that it\u2019s compatible with the electric load, and that everything can be supplied properly to the grid.<\/p>\n\n\n Just to say that System Simulation is perfect and well appropriate to reach nice achievements for sustainability through BESS in your company.<\/p>\n\n\n\n Everyone is quite impressed by all these capabilities to get great outcomes. But it\u2019s not only during the product engineering process with \u201cSimulation for Design\u201d that you can benefit from our System Simulation capabilities to achieve your BESS goals. It\u2019s also through the \u201cSimulation in Operations\u201d where practical significant gains can be reached directly onsite, close to the hardware devices.<\/p>\n\n\n\n In summary, embracing BESS in product development requires a strategic approach, early-stage considerations, and advanced tools like physics-based digital twins to navigate the complexities and leverage BESS as a competitive advantage.<\/p>\n\n\n\n System Simulation definitely helps being successful in your BESS journey thanks to digitalization.<\/p>\n\n\n\n Simcenter Amesim<\/a> is the leading integrated, scalable system simulation platform, allowing system simulation engineers to virtually assess and optimize the performance of mechatronic systems.<\/p>\n\n\n\n<\/a><\/a><\/a>Summary<\/h2>\n\n\n\n
Learn more about Simcenter Amesim<\/h2>\n\n\n\n