Method to minimize the low-frequency neutral-point voltage oscillations with time-offset injection for neutral-point-clamped inverters

Uimin Choi, Kyo-Beum Lee, Frede Blaabjerg

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

2 Citations (Scopus)

Abstract

This paper proposes a method to reduce the low-frequency neutral-point voltage oscillations. The neutral-point voltage oscillations are considerably reduced by adding a time-offset to the three phase turn-on times. The proper time-offset is simply calculated considering the phase currents and dwell time of small and medium voltage vectors. The proposed method does not affect the outputs and there is no increase in the switching frequency. Further, it does not require additional hardware or complex calculations. Simulation and experimental results verify the validity and feasibility of the proposed strategy.
Original languageEnglish
Title of host publicationProceedings of the IEEE Energy Conversion Congress and Exposition, ECCE 2013
Number of pages8
PublisherIEEE Press
Publication date2013
Pages4022-4029
ISBN (Print)9781479903375
ISBN (Electronic)978-147990335-1
DOIs
Publication statusPublished - 2013
Event5th IEEE Energy Conversion Congress & Expo, ECCE 2013 - Denver, Colorado, United States
Duration: 15 Sept 201319 Sept 2013

Conference

Conference5th IEEE Energy Conversion Congress & Expo, ECCE 2013
Country/TerritoryUnited States
CityDenver, Colorado
Period15/09/201319/09/2013

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