Paper Info
Title
Structural Resemblance Between Droop Controllers and Phase-Locked Loops.
Abstract
It is well known that droop control is fundamental to the operation of power systems and now the parallel operation of inverters, while phase-locked loops (PLLs) are widely adopted in modern electrical engineering. In this paper, it is shown at first that droop control and PLLs structurally resemble each other. This bridges the gap between the two communities working on droop control and PLLs. As a result, droop controllers and PLLs can be improved and further developed via adopting the advancements in the other field. This finding is then applied to operate the conventional droop controller for inverters with inductive output impedance to achieve the function of PLLs, without having a dedicated synchronization unit. Extensive experimental results are provided to validate the theoretical analysis.
Year
DOI
Venue
2016
10.1109/ACCESS.2016.2606348
IEEE ACCESS
Keywords
Field
DocType
Droop control,enhanced phase-locked loop (PLL),sinusoidal tracking algorithm (STA),microgrid,smart grid integration,inverters,self-synchronization,parallel operation,synchronous machines,autonomous systems
Phase-locked loop,Output impedance,Control theory,Control theory,Computer science,Electric power system,AC power,Automatic frequency control,Microgrid,Voltage droop
Journal
Volume
ISSN
Citations 
4
2169-3536
5
PageRank 
References 
Authors
0.44
15
2
Name
Order
Citations
PageRank
Qing-Chang Zhong141754.97
Dushan Boroyevich28912.21