Virtual Resistance Technique For Power Limit Management Of Microgrid Dg Inverters

Keywords

DC-link voltage regulation; Distributed generation; Generator emulation control; Microgrid; PLL; Power limit management; Virtual resistance

Abstract

This paper highlights the power limited nature of the Distributed Generation inverter and demonstrates the practical way to integrate them into the microgrid. Since the energy source of Distributed Generation inverters is power limited in nature, they constrain the operation of inverters to which they are coupled. If the power demanded from these inverters is beyond their capability, their DC-link voltage decreases and they are isolated from microgrid. This can have a catastrophic impact on the reliability of the entire system. In this paper, a virtual resistance based DC-link voltage regulation technique is developed to provide power limit management of the Distributed Generation inverter. This will allow Distributed Generation inverters to source their available power even when the power demand is higher than their capacity or hardware ratings. This technique has been modeled and implemented on 200 Watt single phase PV inverter. Experimental results are presented to compare the operation of the inverter with and without virtual resistance based DC Link voltage regulation.

Publication Date

11-3-2017

Publication Title

2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017

Volume

2017-January

Number of Pages

4453-4459

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/ECCE.2017.8096765

Socpus ID

85041342564 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85041342564

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