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Battery Management for Large-Scale Energy Storage (Part 3) ... Nuvation Energy’s Battery Management system provides two levels of response when a battery is moving out of its nominal operating parameters ... As cell temperature, current, and voltage drift outside of (i.e: above or below) nominal parameters, the Battery Management system will generate a \u2018Warning’ to the human user and/or to automated control systems in the battery pack, alerting them that although the battery is still operating within safe parameters, it is getting too close to the edges of those thresholds ... Nuvation Energy’s Battery Management system also enables the implementation of user-defined thresholds that can trigger responses from the PCS and other devices in the energy storage system ... This screenshot from Nuvation Energy’s Battery Management system is generating a Warning that the stack voltage has dropped below 720 Volts, the minimum required by the PCS used in this energy storage system being used at a municipal wastewater treatment plant. ... Figure 1 is a screen capture of Nuvation Energy’s Battery Management system managing a Nuvation-designed 2MW / 588 kWh energy storage system ... If you are in the market for a Battery Management system for your ESS, it would be prudent to ask if it utilizes open or proprietary communications protocols, and to understand the level of effort that will be required for system integration ... Nuvation’s Battery Management system uses the open MESA protocol to enable the sharing of sensor data received by the BMS ... Control systems that manage energy storage applications such as PV smoothing, frequency regulation, and demand charge management are dependent on data from the Battery Management system regarding the level of charge available in the battery packs, as well as the amount of energy available in the ESS ... Nuvation Energy’s Battery Management system performs cell balancing by diverting energy from the cells that are charging faster than others ... Lead Acid Batteries and Battery Management.

Battery Management for Large-Scale Energy Storage (Part 4) ... Lead Acid Batteries and Battery Management ... The terms “full” and “empty” are therefore inaccurate in this context of “never completely full” and “never completely empty.” That’s why battery industry professionals instead prefer to use the term State of Charge (SoC) to refer to the degree to which a battery has approached the lowest or highest recommended level of charge; 100% SoC is not \u2018full’ but is “as full as the system designers said we should go” and 0% SoC is not \u2018empty’ but is “as empty as the system designers said we should go.” These thresholds are programmed into the Battery Management system where they are accessed by the PCS and used to prevent overcharging and over-discharging. ... In Nuvation Energy’s Battery Management system, Depth of Discharge refers to how many amp-hours (Ah) of the total battery capacity have been used ... Nuvation Energy’s Battery Management system adds a technique called coulomb counting to its approach to calculating SoC when a battery is in use ... Nuvation Energy’s Battery Management system has solved this problem with proprietary algorithms that also include additional sensor data. ... In an application with a small number of lead-acid cells, replacing a lead-acid battery from time to time may cost less than integrating a Battery Management system into the ESS ... However, in a large-scale lead-acid energy storage system that outputs hundreds of kilowatt-hours or more of energy, the ROI of incorporating cell-level Battery Management becomes a simpler calculation, and developers of these systems tend to utilize a BMS. ... In a large-scale energy storage system that utilizes dozens of large-format lead-acid cells to output hundreds of kilowatt-hours or more of energy, the ROI of incorporating cell-level Battery Management becomes very simple math. ... Nuvation’s Battery Management system provides users with the ability to log into the BMS user interface and change the maximum DoD threshold settings within minutes in order to derive more capacity from the battery. ... We hope this exploration of Battery Management for large-scale energy storage provided you with some new knowledge and insights ... As with most electronic equipment, all Battery Management systems are not created equal, and some perform their role better than others ... Nuvation Energy Battery Management systems are designed from the ground up for use in large-scale high-power applications and critical energy infrastructure ... We are confident that when you evaluate our Battery Management systems, you will be very impressed.

Nuvation Energy’s configurable off-the-shelf battery management solutions enable your organization to choose the best batteries and system components for your needs, and start building your energy storage systems at any scale and volume.

“As one of the most reliable and well-designed battery management systems available today for energy storage, e2’s use of Nuvation Energy’s BMS in our energy storage system supports that worry-free promise that our customers depend on.” ... “Nuvation Energy’s battery management system impressed us with how reliably it managed our batteries ... “Nuvation Energy’s battery management systems and energy controller were easy to integrate, and their engineering team provided ESS designs that significantly reduced time to market.”.

Battery Management System Retrofits.