NDLI: Multi-loop virtual synchronous generator control of inverter-based DGs under microgrid dynamics

Content Provider	IET Digital Library
Author	Zhao, Hailin Yang, Qiang Zeng, Hongmei
Abstract	The increasing penetration of small-scale renewable power sources into the passive distribution networks brings direct deteriorated impacts on operation of microgrids due to the lack of inertia and damping property, e.g. unexpected voltage rise, increased fault level. To this end, this study presents a novel virtual synchronous generator (VSG) based multi-loop control solution aiming to efficiently manage the embedded inverter-based renewable distributed generators (DGs) in a plug-and-play fashion. With such multi-loop control structure, the virtual flux oriented control is adopted to avoid the harmonic interference and guarantee accurate control of vector orientation process in the U/I closed-loop feedback based vector control. The VSG based control is able to obtain timely current response and carry out static error free tracking control of output voltage. The pre-synchronising control aligned to the outer loop to ensure smooth transition from island to grid-connected mode is also studied. The proposed control solution is assessed through a set of simulation experiments in a microgrid for both island and grid-connected scenarios, and the numerical result confirms its technical benefits.
Starting Page	795
Ending Page	803
Page Count	9
ISSN	17518687
Volume Number	11
e-ISSN	17518695
Issue Number	Issue 3, Feb (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/11/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2016.0645
Journal	IET Generation, Transmission & Distribution
Publisher Date	2017-02-16
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Closed Loop System Closed-loop Feedback Based Vector Control Control of Electric Power System Distributed Power Generation Feedback Grid-connected Mode Harmonic Interference Avoidance Inverter-based DG Inverter-based Renewable Distributed Generator Invertors Machine Vector Control Microgrid Dynamics Multiloop Virtual Synchronous Generator Control Output Voltage Control Static Error Free Tracking Control Synchronous Generator Synchronous Machine Vector Orientation Process Control Virtual Flux Oriented Control Voltage Control VSG Based Multiloop Control
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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