基于超级电容的堆垛机再生制动节能优化设计

Energy saving optimization design for regenerative braking of piler based on supercapacitor

将超级电容器回收异步电动机再生制动的设计运用在堆垛机的节能模型上,通过在传统双闭环PI控制的基础上引入两个模糊控制器,同时加入优化后的双超级电容器(Super-Capacitor,SC)模型,实现堆垛机在再生制动模式下双SC系统稳定回收再生制动电能。优化后的再生制动系统可根据电网电压实时充放电变化和超级电容充放电电流纹波,调整传统双闭环PI控制器的输入电压,作用于双向DC-DC变换器。经仿真实验验证,相较于传统模型,模糊控制下的双SC模型能有效地减小电压纹波,提高堆垛机节能系统直流母线侧电压稳态性能和电能利用率。

This article applies the design of regenerative braking for asynchronous motors recovering supercapacitors to the energy-saving model of stacker cranes.By introducing two fuzzy controllers on the basis of traditional double closed-loop PI control and adding an optimized double supercapacitor model,the dual SC system can stably recover regenerative braking energy in the regenerative braking mode of stacker cranes.The optimized regenerative braking system can adjust the input voltage of the traditional dual closed-loop PI controller based on real-time changes in grid voltage and ripple of supercapacitor charging and discharging current,and act on the bidirectional DC-DC converter.Through simulation experiments,it has been verified that compared to traditional models,the dual SC model under fuzzy control can effectively reduce voltage ripple,improve the steady-state performance and energy utilization efficiency of the DC bus side voltage of the stacker crane energy-saving system.