摘要
提出一种孤岛模式下交直流混合微电网双向换流器控制方法,给出了微电网结构和双向换流器数学模型,分析了交流子微网中分布式发电单元的下垂控制策略,并将其引申至直流子微网系统,通过交直流子微网功率交互平衡,导出了外环功率控制策略。在内环控制系统中加入干扰观测器并施以补偿控制策略,提高了AC/DC变换器的抗干扰能力,通过系统仿真证明了控制策略的有效性。
A bidirectional converter control method for AC/DC micro-grids in islanding mode was proposed,and the microgrid structure and bidirectional converter mathematical model were given.The droop control strategy of distributed generation units in AC Sub-microgrids was analyzed,and it was extended to DC Sub-microgrid systems.By balancing the power interaction between AC and DC Sub-microgrids,the outer loop power control strategy was derived.By adding a disturbance observer and implementing a compensation control strategy in the inner loop control system,the anti-interference ability of the AC/DC converter has been improved.The effectiveness of the control strategy was verified through system simulation.
作者
王武
WANG Wu(School of Electrical Engineering,Xuchang University,Xuchang 461000,China)
出处
《电工材料》
2025年第5期83-85,89,共4页
Electrical Engineering Materials
关键词
交直流微电网
孤岛模式
下垂控制
换流器
控制仿真
AC/DC micro-grid
islanding mode
droop control
converter
control and simulation
