Nonliear-Disturbance-Observer Based DC-Bus Voltage Control for DC Microgrid

被引：0
|
作者：
Hong, Zhu [1 ]
Yu, Dongsheng [1 ]
Chen, Hao [1 ]
Cheng, He [1 ]
Zan, Xiaoshu [1 ]
机构：
[1] China Univ Min & Technol, Sch Informat & Elect Engn, Xuzhou, Peoples R China
来源：
2016 14TH INTERNATIONAL CONFERENCE ON CONTROL, AUTOMATION, ROBOTICS AND VISION (ICARCV) | 2016年
基金：
中国国家自然科学基金;
关键词：
DC-bus voltage; nonlinear disturbance observer; nonlinear observer gain; composite control law; feed-forward control; SYSTEMS; INVERTER;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In order to improve the DC-bus voltage control performance and suppress the transient fluctuation of DC-bus voltage, a nonlinear disturbance observer (NDO) based DC-bus controller is proposed in this paper. The feed-forward compensation of active power disturbance is achieved by the proposed controller to reject the influence of parameter variations and the mismatched disturbance from the output terminals. The active power disturbance of feed-forward compensation can be effectively estimated by the NDO without requirement of measuring the load and sources power, which will reduce the hardware cost and also increase the reliabilities of DC microgird. The feed-forward compensation gain is designed by taking convergence rate of the observer and the influence of compensation gain on the stability of DC microgrid into account. Simulations are carried out to verify the performance of the proposed control method in consideration of different disturbances.
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收藏
页数：5
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