Analytical Design of LC Filter Inductance for Two-Level Inverters Based on Maximum Ripple Current

Arash Khoshkbar-Sadigh, Vahid Dargahi, Ketan Lakhera, Keith Corzine

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Single-phase inverters play a crucial role in transferring the power from renewable energy sources such as wind, solar, or even a hydrogen-based fuel cell to the load and/or the electric-power grid. In order to attenuate the high-frequency switching components of the inverter's generated voltage and to minimize the distortion of the injected current at the grid/load side, the LC filter is usually employed. This paper proposes a simple closed-form formula to analytically calculate the required inductance of an LC filter in a single-phase full-bridge inverter controlled with unipolar switching pattern. The derived equations demonstrate that the LC filter inductance value depends on modulation index. Moreover, it proves that the angle at which the maximum peak-to-peak ripple current occurs is not a fixed value, and it varies based on modulation index. Furthermore, the simulation results of a 6.6 kW single-phase inverter are provided for two cases of modulation index to confirm derived closed-form equations.

Original languageEnglish (US)
Title of host publicationProceedings
Subtitle of host publicationIECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society
PublisherIEEE Computer Society
Pages1621-1626
Number of pages6
ISBN (Electronic)9781728148786
DOIs
StatePublished - Oct 2019
Event45th Annual Conference of the IEEE Industrial Electronics Society, IECON 2019 - Lisbon, Portugal
Duration: Oct 14 2019Oct 17 2019

Publication series

NameIECON Proceedings (Industrial Electronics Conference)
Volume2019-October

Conference

Conference45th Annual Conference of the IEEE Industrial Electronics Society, IECON 2019
CountryPortugal
CityLisbon
Period10/14/1910/17/19

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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