摘要
直流微电网中,由于线路阻抗影响,下垂控制存在母线电压跌落的问题。结合滑模定频PWM控制,提出了一种抗PI饱和的数字平均电流控制策略,实现了对变换器并联运行时合理的功率分配,提高了系统稳态和暂态性能。最后,通过仿真实验验证了数字平均电流控制策略的有效性。
In the DC microgrid,there is a bus voltage sag problem in droop control due to the influence of line impedance.In this paper,combining with sliding mode PWM control with constant frequency,a PI-anti-windup digital average current control strategy （DACS） is proposed.Reasonable power allocation is achieved when the converters are operated,improved the static and transient performance of the system.Finally,the simulation results show the effectiveness of the proposed control strategy.
作者
岑建军
庄绪州
张勤进
CEN Jianjun;ZHUANG Xuzhou;ZHANG Qinjin(Lianchen Branch of CHALCO,Lanzhou 730000,China;Marine Engineering College Dalian Maritime University,Dalian 116026,China)
出处
《供用电》
2018年第12期8-13,共6页
Distribution & Utilization
基金
辽宁省自然科学基金项目(20170540082)~~
