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A Hardware Grid Simulator to Test Grid-Connected Inverter Systems.

Karuppaswamy, Arun B and John, Vinod (2010) A Hardware Grid Simulator to Test Grid-Connected Inverter Systems. In: National Power Electronics Conference 2010, June 11 - June 13, 2010., IIT - Roorkee..

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Abstract

Grid-connected systems when put to use at the site would experience scenarios like voltage sag, voltage swell, frequency deviations and unbalance which are common in the real world grid. When these systems are tested at laboratory, these scenarios do not exist and an almost stiff voltage source is what is usually seen. But, to qualify the grid-connected systems to operate at the site, it becomes essential to test them under the grid conditions mentioned earlier. The grid simulator is a hardware that can be programmed to generate some of the typical conditions experienced by the grid-connected systems at site. It is an inverter that is controlled to act like a voltage source in series with a grid impedance. The series grid impedance is emulated virtually within the inverter control rather than through physical components, thus avoiding the losses and the need for bulky reactive components. This paper describes the design of a grid simulator. Control implementation issues are highlighted in the experimental results.

Item Type: Conference Paper
Keywords: Grid Connected Systems, STATCOM, Active Filter, Grid, Sag, Swell, Unbalance, Grid Simulator
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 13 Jul 2010 05:57
Last Modified: 19 Sep 2010 06:11
URI: http://eprints.iisc.ernet.in/id/eprint/29245

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