Power-based droop control suppressing the effect of bus voltage harmonics for DC microgrids

2017 ◽  
Author(s):  
Guangyuan Liu ◽  
Tommaso Caldognetto ◽  
Paolo Mattavelli ◽  
Paolo Magnone
Keyword(s):  
Droop Control ◽  
Dc Microgrids ◽  
Bus Voltage ◽  
Voltage Harmonics

scholarly journals Multidimensional Optimal Droop Control for DC Microgrids in Military Applications

2018 ◽  
Vol 8 (10) ◽  
pp. 1966 ◽  
Author(s):  
Kaitlyn Bunker ◽  
Michael Cook ◽  
Wayne Weaver ◽  
Gordon Parker
Keyword(s):  
Control System ◽  
Control Strategy ◽  
System Reliability ◽  
Droop Control ◽  
Hardware In The Loop ◽  
Dc Microgrids ◽  
Military Applications ◽  
Bus Voltage ◽  
Solar Resource

Reliability is a key consideration when microgrid technology is implemented in military applications. Droop control provides a simple option without requiring communication between microgrid components, increasing the control system reliability. However, traditional droop control does not allow the microgrid to utilize much of the power available from a solar resource. This paper applies an optimal multidimensional droop control strategy for a solar resource connected in a microgrid at a military patrol base. Simulation and hardware-in-the-loop experiments of a sample microgrid show that much more power from the solar resource can be utilized, while maintaining the system’s bus voltage around a nominal value, and still avoiding the need for communication between the various components.

Codimension-Two Bifurcation Analysis in DC Microgrids Under Droop Control

2016 ◽  
Vol 26 (02) ◽  
pp. 1650028 ◽  
Author(s):  
Eduardo Lenz ◽  
Daniel J. Pagano ◽  
André P. N. Tahim
Keyword(s):  
Power Systems ◽  
Bifurcation Analysis ◽  
Electrical Power ◽  
Droop Control ◽  
Electrical Power Systems ◽  
Dc Microgrid ◽  
Dc Microgrids ◽  
Codimension Two ◽  
Bus Voltage ◽  
Codimension Two Bifurcation

This paper addresses local and global bifurcations that may appear in electrical power systems, such as DC microgrids, which recently has attracted interest from the electrical engineering society. Most sources in these networks are voltage-type and operate in parallel. In such configuration, the basic technique for stabilizing the bus voltage is the so-called droop control. The main contribution of this work is a codimension-two bifurcation analysis of a small DC microgrid considering the droop control gain and the power processed by the load as bifurcation parameters. The codimension-two bifurcation set leads to practical rules for achieving a robust droop control design. Moreover, the bifurcation analysis also offers a better understanding of the dynamics involved in the problem and how to avoid possible instabilities. Simulation results are presented in order to illustrate the bifurcation analysis.

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