摘要
为了解决直流微电网中含有大量的变换器,在闭环控制下的特性表现为恒功率负载,并引起直流微电网母线电压不稳定的问题,提出了一种回路抵消技术。通过引入非线性反馈支路,抵消恒功率负载的负阻抗特性,从而确保了直流微电网的稳定。仿真试验结果表明,方法是可行和有效的。
There are a lot of converters in the DC microgrid.This tightly regulated closed-loop converters may cause stability problem of bus voltage when used as a load since they trend to draw constant power and exhibit negative incremental resistance.A novel nonlinear feedback technique,called loop counteraction,was introduced. This technique counteracts the destabilizing effect of the constant power loads and insures the stability of DC microgrid.The feasibility and effectiveness of this method are verified by the simulation results.
出处
《电器与能效管理技术》
2015年第18期40-44,共5页
Electrical & Energy Management Technology
关键词
直流微电网
稳定
恒功率负载
回路抵消
DC microgrid
stabilization
constant power load
loop counteraction
