基于DAB的光储型混合系统功率调节与控制

Study on power regulation and control based on DAB for a hybrid system with photovoltaic and storage

储能是平抑光伏发电功率波动的有效方式。针对光储型交直流混合系统典型应用场景,为解决光伏单元与储能单元的接入和功率调节问题,提出一种基于隔离型双向全桥变换器的功率调节拓扑,并基于功率直接反馈理论设计光储能量协调控制策略。通过在MATLAB/Simulink中搭建仿真模型,进行仿真实验分析,结果表明所提技术方案的正确性与有效性。

Energy storage is an effective way to smooth out fluctuations in the photovoltaic power generation.Aiming at the typical application scenarios of the optical storage type AC/DC hybrid system,a power adjustment topology based on the isolated dual active bridge(DAB)is proposed in order to solve the problem of the access and power adjustment of the photovoltaic unit and the energy storage unit.Based on the theory of direct power feedback,a coordinated control strategy for optical energy storage is then designed.A simulation model is built in MATLAB/Simulink and further analyzed.The results indicate the correctness and effectiveness of the proposed method.