A Quasi-3-Level Active Neutral Point Clamped Converter for Onboard Chargers in Electric Vehicles

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Abstract

A Quasi-3-Level (Q3L) Active Neutral Point Clamped (ANPC) converter is introduced that allows for higher-efficiencies and power-densities for high-voltage bidirectional AC-DC converters, which are especially relevant in the On-board Chargers (OBC) design in an Electric Vehicle (EV). The use of Quasi-2-level (Q2L) cells to allow the use of lower-voltage rated semiconductor devices is explored and the balancing schemes of the flying-capacitor are discussed. Carrier-based modulation schemes and subsequent semiconductor duty-cycles and RMS current are derived, along with the filter sizing which provides the design expressions of the converter. The effect of switching frequency (and consequently, the power density) on the efficiency is analysed. The operation of the converter is verified in simulations and the analytically calculated design parameters are verified.
Original languageEnglish
Title of host publication2023 IEEE 8th Southern Power Electronics Conference and 17th Brazilian Power Electronics Conference (SPEC/COBEP)
PublisherIEEE
Number of pages8
ISBN (Electronic)979-8-3503-2112-8
ISBN (Print)979-8-3503-2113-5
DOIs
Publication statusPublished - 1 Feb 2024
EventIEEE 8th Southern Power Electronics Conference and 17th Brazilian Power Electronics Conference, SPEC 2023 - Florianopolis, Brazil
Duration: 26 Nov 202329 Nov 2023
Conference number: 8
https://spec-ieee.org/spec2023/

Publication series

Name2023 IEEE 8th Southern Power Electronics Conference and 17th Brazilian Power Electronics Conference (SPEC/COBEP)
PublisherIEEE
Number8
Volume2023
ISSN (Print)2832-2983

Conference

ConferenceIEEE 8th Southern Power Electronics Conference and 17th Brazilian Power Electronics Conference, SPEC 2023
Abbreviated titleSPEC 2023
Country/TerritoryBrazil
CityFlorianopolis
Period26/11/2329/11/23
Internet address

Keywords

  • Electric Vehicles
  • Onboard charger
  • Multi-level converters
  • Quasi-2-level
  • Power factor correction
  • 2024 OA procedure

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