Current sourcing isolated grid connected inverter

Ilya Zeltser, Sam Ben-Yaakov

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This study proposes a soft switched Output Current Sourcing (OCS) grid connected inverter that applies a high frequency isolation transformer. Current sourcing at the output implies that, ideally, the injected current will be independent of the load voltage. The current injected to the line is controlled by varying the switching frequency and PWM at low currents. The system does not require the sensing of the output current or even the line voltage - except for synchronization. This is in contrast to the conventional voltage sourcing inverters where the small disturbance at the line voltage may lead to current run away and consequently a tight current feedback loop must be applied. The proposed topology and several proposed control approaches were analyzed and verified by simulations and by experiments. The simulation and experimental results confirm the theoretical analysis and show that the proposed inverter can be operated with no sensing of the line current or voltage except for synchronization.

Original languageEnglish
Title of host publicationISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems
Subtitle of host publicationNano-Bio Circuit Fabrics and Systems
Pages2203-2206
Number of pages4
DOIs
StatePublished - 31 Aug 2010
Event2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, ISCAS 2010 - Paris, France
Duration: 30 May 20102 Jun 2010

Publication series

NameISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems

Conference

Conference2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, ISCAS 2010
Country/TerritoryFrance
CityParis
Period30/05/102/06/10

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