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A High-Power High-Ratio DC-DC Converter with DC Fault Blocking Capability

  • University of Toronto

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

2 Scopus citations

Abstract

This paper proposes a non-isolated medium-voltage DC-DC converter with high step-up ratio. It aims to interconnect the low-voltage (LV) generation unites and medium-voltage (MV) power-collecting grid in DC renewable system. The proposed DC-DC converter is composed by a switch network and a few cells. The switch network alternatively configures the cells in parallel connection for charging from low-voltage input side (VL) and in series connection for discharging to high-voltage output side (VH). This helps step up the low generation-unite voltage to power-collecting-grid level. Meanwhile, the embedded cells in converter possess voltage adjusting ability, which enables the immediate change of output voltage. As compared to other megawatt-class non-isolated DC-DC converter, the proposal not only achieve high step-up ratio, but also integrates the capabilities of output voltage modulation and DC fault blocking. The feasibility of the proposed DC-DC converter is verified by simulations performed in MATLAB/SIMULINK.

Original languageEnglish
Title of host publication2019 IEEE 20th Workshop on Control and Modeling for Power Electronics, COMPEL 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728118420
DOIs
StatePublished - Jun 2019
Externally publishedYes
Event20th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2019 - Toronto, Canada
Duration: 17 Jun 201920 Jun 2019

Publication series

Name2019 IEEE 20th Workshop on Control and Modeling for Power Electronics, COMPEL 2019

Conference

Conference20th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2019
Country/TerritoryCanada
CityToronto
Period17/06/1920/06/19

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • DC-DC Converter
  • High Conversion Ratio
  • Medium-Voltage
  • Renewable Energy

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