An LC Filter Design Based on the Maximum Ripple Current for Two-Level Inverters Controlled with a Bipolar Switching Scheme

Saleh Farzamkia, Ketan Lakhera, Arash Khoshkbar-Sadigh, Vahid Dargahi, Poria Fajri

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

Abstract

One of the key elements in transferring the power from the distributed renewable energy resources into the power grid is the single-phase inverters. However, due to the operation principle of inverters, they generate high-frequency switching components that causes a distortion in the injected current at the grid/load side. In order to suppress this problem, the $LC$ filter is typically used. In this paper, equations are presented to calculate the LC filter parameters in a grid-connected single-phase full-bridge inverter operated based on bipolar switching method. According to the derived closed-form equations, inductance value of LC filter is independent of the modulation index. Furthermore, it is demonstrated that the angle at which the maximum peak-to-peak current ripple occurs is always the zero crossing of output current. However, the value of the peak-to-peak current ripple varies based on the modulation index and time. To validate the derived equations, a 6.6 kW single-phase inverter is simulated and results of two case studies for 110 Vrms and 220 Vrms are provided.

Original languageEnglish (US)
Title of host publicationClemson University Power Systems Conference, PSC 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728193847
DOIs
StatePublished - Mar 2020
Event2020 Clemson University Power Systems Conference, PSC 2020 - Clemson, United States
Duration: Mar 10 2020Mar 13 2020

Publication series

NameClemson University Power Systems Conference, PSC 2020

Conference

Conference2020 Clemson University Power Systems Conference, PSC 2020
Country/TerritoryUnited States
CityClemson
Period3/10/203/13/20

All Science Journal Classification (ASJC) codes

  • Artificial Intelligence
  • Information Systems and Management
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Control and Optimization

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