摘要
风储联合系统可以有效地增加风电在电网中的渗透率,其中双向DC-DC变流器成为储能系统中的重要组成部分。文中针对一类多重化结构的双向DC-DC变流器拓扑,提出自适应模糊PI控制策略,以实现自动跟踪参考目标电压及功率双向流通的目的。首先,分析三重化双向DC-DC变流器的工作原理,得到其工作模型;然后,对使用于三重化双向DC-DC变流器的双闭环结构,提出自适应模糊PI控制结构并设计模糊控制器;最后,根据算例利用Simulink仿真验证,自适应模糊PI控制可以有效地控制电池充放电,更好地满足系统动态和稳态指标,适用于在电力储能系统中的应用。
Abstract： The wind and energy storage combined system can effectively increase the penetration of wind power in the grid. And the bidirectional DC-DC converter is an important part of the energy storage system. Aiming at a multi-class structure of the bidirectional DC-DC converter topologies, this paper presents an adaptive fuzzy PI control strategy to automatically track target reference voltage and power flow in both directions. First, a working model of the triple bidirectional DC-DC converter is established by analyzing its working principle. Second, for the dual-loop structure used in the triple bidirectional DC-DC converter, adaptive fuzzy PI control structure and corresponding fuzzy controller are designed. Third, examples are simulated with the software Simulink to verify that the proposed adaptive fuzzy PI controller can effectively control the charge and discharge processes of the battery,and meet the dynamic and static indicators better. This adaptive fuzzy PI control strategy is applicable to electric power storage system.
出处
《高压电器》
CAS
CSCD
北大核心
2015年第7期15-19,25,共6页
High Voltage Apparatus
基金
中央高校基本科研业务费专项资金项目(00-800015G2)~~
关键词
风储系统、多重化
双向
DC-DC变流器
自适应
模糊控制
wind and energy storage combined system
multiple
bidirectional
DC-DC converter
adaptive
fuzzy control
