SOC Balance of DC Microgrid Photovoltaic Energy Storage System (Comparison of Basic and Improved SOC Balance Strategies) Including Sag Control and Model Prediction
SOC Balance of DC Microgrid Photovoltaic Energy Storage System (Basic Edition)
1. Photovoltaic system: MPPT adopts conductivity increment method, with a power of about 14.5kW
2. Energy storage system: The outer loop adopts bus voltage sag control, while the inner loop adopts current model predictive control MPC
3. Bus voltage 400V, DC load (set 20 Ω to adjust to 8 Ω, charge and discharge energy storage first), SOC balance can be achieved during the charging and discharging process
4. SOC balance consistency adopts a variable droop coefficient to achieve SOC balance between two sets of energy storage batteries in charging or discharging states
SOC Balance of DC Microgrid Photovoltaic Energy Storage System (Improved Version)
1. Photovoltaic system: MPPT adopts conductivity increment method, with a power of about 14.5kW
2. Energy storage system: The outer loop adopts bus voltage sag control, while the inner loop adopts current model predictive control MPC
3. Bus voltage 400V, DC load (set 20 Ω to adjust to 8 Ω, charge and discharge energy storage first), SOC balance can be achieved during the charging and discharging process
4. SOC balance consistency adopts a variable droop coefficient to achieve SOC balance between two sets of energy storage batteries in charging or discharging states
5. Improvement idea: Combine the index part with the difference in SOC between the two groups. The basic index section is fixed, and the improved index section will take into account the differences in SOC
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28 июн 2024
