Implementation of a virtual inertia control for inertia enhancement of a DC microgrid under both grid connected and isolated operation

被引：43
作者：
Samanta, Soumya [1 ]
Mishra, Jyoti Prakash [1 ]
Roy, Binoy Krishna [1 ]
机构：
[1] NIT Silchar, Dept Elect Engn, Silchar 788010, Assam, India
来源：
COMPUTERS & ELECTRICAL ENGINEERING | 2019年 / 76卷
关键词：
DC microgrid; Renewable energy sources; Virtual inertia control; DC bus voltage control; Inertia enhancement; SYNCHRONOUS GENERATOR; SYNCHRONVERTERS INVERTERS; STABILITY;
D O I：
10.1016/j.compeleceng.2019.04.006
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper, a virtual inertia control-based unified control technique is proposed for the DC bus voltage control unit of a DC microgrid to regulate the DC bus voltage and emulate inertia. In addition, a restoration control is also used in cascade with the virtual inertia control to reduce the steady state error in the DC bus voltage. The DC bus voltage control unit consists of a bidirectional DC-DC converter and a bidirectional grid connected inverter. Further, a feedforward controller is designed for the DC bus voltage control loop to improve the dynamic performance. A small-signal model of the DC bus voltage control unit is developed to analyse the dynamic performance and to design the parameters of the virtual inertia controller. Finally, the effectiveness of the proposed technique is tested under both grid connected and isolated operation of the DC microgrid considering the variation of both sources and loads. The simulation results reveal the successful control of the DC bus voltage during transient and steady state conditions. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页码：283 / 298
页数：16
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