摘要
在建立基于等效电路的超级电容器储能(SCES)系统的数学模型基础上,设计了一种超级电容器储能的动态电压恢复器(DVR)。该DVR以超级电容器为直流侧储能单元,采用非隔离型Buck-Boost双向DC/DC变换器进行双闭环功率前馈控制,采用双向电压源型DC/AC变换器进行解耦和前馈补偿控制。根据SCES的特性,确定了系统的基本运行原理,即当电源电压暂降时,通过调节DVR输出的有功功率和无功功率来维持负载电压幅值和相位的稳定。仿真实验结果验证了该DVR拓扑结构及其控制策略的正确性和有效性。
The mathematical models of SCES（Super Capacitor Energy Storage） system are built based on the equivalent circuits and a kind of DVR（Dynamic Voltage Restorer） based on SCES is designed,which uses the super capacitor as the storage component at its DC side,applies the non-isolated Buck-Boost bi-directional DC/DC converter in its double closed-loop power feed-forward control and adopts the hi-directional voltage- source DC/AC converter in its decoupling and feed-forward compensation control. Its operating principle is established according to the characteristics of SCES,which regulates the active and reactive powers of DC/ AC converter to stabilize the load voltage when the source voltage drops. The correctness and effectiveness of the designed DVR are verified by simulation and experiment.
出处
《电力自动化设备》
EI
CSCD
北大核心
2013年第12期21-26,共6页
Electric Power Automation Equipment
关键词
动态电压恢复器
控制
超级电容器
储能
dynamic voltage restorer
control
super capacitor
energy storage
