Simulation Study of Active Current Sharing of High-power Parallel DC Battery Pack in Substations
The present work was focused on high-power parallel DC system scheme and current sharing technology scheme of substations.It selected the most suitable parallel DC supply scheme for substations,analyzed current sharing technology and current sharing control under parallel DC,and proposed an improved average current method.It finally modeled the circuit and the control loop by MATLAB/Simulink,and conducted design and simulation of the system scheme and the current sharing scheme.The results showed that the hybrid parallel scheme has high reliability,high charge and discharge efficiency,and appropriate redundancy,so it is selected as the parallel DC supply scheme.The closed-loop control of the improved current sharing system can meet the stability requirements of control loop,respond quickly to current sharing demand,and tolerate a very high interference,hence the improved average current method has high current sharing accuracy and good reliability.
substationparallel DC power supply systemmulti-charge and discharge circuitactive current sharing
万方数据
维普
