How to Manually Perform SOC Calibration on Sungrow’s PowerTitan Solar Energy Storage System
State of Charge (SOC) calibration is a crucial procedure for maintaining the accuracy and longevity of battery storage systems. For owners of Sungrow‘s PowerTitan, one of the leading solar energy storage systems, understanding how to manually calibrate the SOC can enhance system performance and battery health. This blog post will walk you through the steps necessary to effectively perform SOC calibration on the PowerTitan system.
Importance of SOC Calibration
SOC calibration helps ensure that the battery management system accurately reflects the battery’s actual charge level. This accuracy is critical for optimizing battery usage, extending battery life, and maintaining overall system efficiency. Calibration can correct any drifts in SOC measurements that occur over time due to battery aging, usage patterns, and system updates.
Steps to Manually Calibrate SOC in PowerTitan
Performing an SOC calibration involves setting protection limits, discharging and charging the battery to these limits, and allowing the system to rest. Here’s how to do it step by step:
Step 1: Set SOC Protection Limits
– Adjust Protection Limits: Set the SOC protection limits to 1%-5% on the low end and 97%-100% on the high end. These settings help prevent the battery from operating in extreme states that might degrade its health, while still allowing for a full calibration cycle.
Step 2: Discharge the System
– Begin Discharge: Discharge the system until the SOC reaches the newly set lower limit. Monitor the discharge process to ensure that the system does not go below the 1%-5% range.
– Rest Period: Once the lower limit is reached, let the system rest for 2 hours without any change to the power command. This rest period allows the battery cells to stabilize and provides a more accurate reading for calibration.
Step 3: Charge the System
– Commence Charging: Charge the battery up to the upper end SOC setting. As with discharging, carefully monitor the charging to ensure that the SOC does not exceed the set upper limit of 97%-100%.
– Second Rest Period: After reaching the upper limit, let the system rest again for 2 hours without changing the power command. This step is crucial as it helps the cells reach an equilibrium state at a fully charged level.
Step 4: SOC Calibration Complete
– Resume Operation: Once the second rest period is over, the SOC calibration is complete. The system can now be put back into operation, running with a recalibrated and more accurate SOC indication.
Conclusion: Enhancing System Reliability and Performance
Manually calibrating the SOC of Sungrow’s PowerTitan system is a straightforward yet essential maintenance task that can significantly improve the performance and reliability of the system. By regularly performing SOC calibration, system owners can ensure that the battery storage operates efficiently, maintains its health over a longer period, and provides reliable power output as expected. Remember, maintaining your solar battery system’s SOC accuracy not only optimizes its performance but also protects your investment in solar energy storage technology.
