Power Distribution of Hybrid Wave and Photovoltaic Power Generation System Based on Coordinated Control of Battery Charge and Discharge Status

This paper proposes a power coordinated control strategy based on the state of battery charge and discharge to solve the real-time power distribution in the new energy power generation system and reduce energy loss. Taking the hybrid wave and photovoltaic power generation DC microgrid as the research object, high-pass filter control is used in the hybrid energy storage unit to achieve unbalanced power distribution; then adjust the super capacitor energy storage according to the battery charging and discharging state, and find the optimal power reference value through continuous loop iterations to improve the overall adjustment ability. Combining with the balance of supply and demand in the system, an improved DC bus signal DBS control method is further constructed, and the current control strategy of space vector modulation is used to realize the power control of each power generation source of the system, and suppress the fluctuation characteristics of waves and photovoltaic power generation, which causes the system to frequently switch working states. Simulation shows that this method effectively improves system reliability, keeps the bus voltage stable, and optimizes the charging and discharging capabilities of hybrid energy storage.