Modeling and Analysis of Passive Networks using Dynamic Phasors for study of Islanded Inverters

Venkatramanan, D and John, Vinod (2017) Modeling and Analysis of Passive Networks using Dynamic Phasors for study of Islanded Inverters. In: 2017 IEEE TRANSPORTATION ELECTRIFICATION CONFERENCE (ITEC-INDIA), DEC 13-15, 2017, INDIA.

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Abstract

Grid integration of renewable energy based distributed energy resources (DERs) through pulse-width modulated (PWM) grid-tie inverters (GTI), is gaining importance owing to ever-increasing energy demand. Study of islanding behavior of such GTIs is critical for detecting island formation and for subsequently ceasing DER operation. The grid-interface structure of a GTI considered for islanding study typically consists of a parallel RLC network forming the load bank, along with grid and grid-impedance. Existing models for analysis of grid-interface are based on time-domain differential equations and are less insightful for analytical study of the ac phenomena occurring during and after island formation. In this paper, a dynamicphasor based approach is investigated for modeling and analysis of grid-interface passive network system of a DER. A generic and simplified framework is proposed for developing polar coordinates based dynamic phasor models of passive networks, which are verified through simulation and experiments.

Item Type:	Conference Paper
Series.:	IEEE Transportation Electrification Conference and Expo
Publisher:	IEEE
Additional Information:	IEEE Transportation Electrification Conference (ITEC-India), Pune, INDIA, DEC 13-15, 2017
Keywords:	Grid-tie inverter; dynamic phasor model; local RLC load; islanding; point of common coupling; phasor domain
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	03 Jan 2019 10:21
Last Modified:	03 Jan 2019 10:21
URI:	http://eprints.iisc.ac.in/id/eprint/61267

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