Modular switched-capacitor DC-DC converters tied with lithium-ion batteries for use in battery electric vehicles

Yue Cao, Yutian Lei, Robert C N Pilawa-Podgurski, Philip T Krein

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

Abstract

This paper presents a modular switched-capacitor (SC) dc-dc converter based electric drive system for battery electric vehicles. In such a system, modularized lithium-ion battery cell tied MOSFET SC converters are used instead of the more conventional IGBT boost converter. Following the drive train architecture, the modeling approach for each electrical component, including the battery set, dc-dc and dc-ac converters, ac machines, and their control is discussed. Emphasis is given on state of the art lithium-ion battery models and SC converter design. System level performance is analyzed based on simulation results across drive cycles. Hardware including a three-cell lithium-ion battery tied SC converter module is built and tested. Application notes such as economic and spacing constraints are addressed.

Original languageEnglish (US)
Title of host publication2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages85-91
Number of pages7
ISBN (Electronic)9781467371506
DOIs
StatePublished - Oct 27 2015
Event7th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2015 - Montreal, Canada
Duration: Sep 20 2015Sep 24 2015

Other

Other7th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2015
CountryCanada
CityMontreal
Period9/20/159/24/15

Keywords

  • ac motor drives
  • electric vehicles
  • lithium-ion batteries
  • Switched capacitor dc-dc converters

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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