A Unique Ultracapacitor Direct Integration Scheme in Multilevel Motor Drives for Large Vehicle Propulsion

This paper presents a method of integrating banks of ultracapacitors into cascaded multilevel inverters for applications in electric and hybrid vehicle energy storage using regenerative braking. In lieu of typical dc-link capacitors, this method proposes the use of ultracapacitors, which can combine the energy storage units and the motor drives, thus eliminating the need for interfacing the dc-dc converter. A regenerative energy management schematic is then proposed based on the multilevel motor drive approach. By integrating the energy storage units and the motor drives, efficiency of energy storage is improved. While this method allows for variance in the dc-link voltage ratio, the proposed energy management scheme allows for modulation that will not disrupt the motor drive output. Simulations have demonstrated the effectiveness of the proposed technique.

  • Availability:
  • Authors:
    • Lu, Shuai
    • Corzine, Keith A
    • Ferdowsi, Mehdi
  • Publication Date: 2007-7


  • English

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Filing Info

  • Accession Number: 01056114
  • Record Type: Publication
  • Source Agency: UC Berkeley Transportation Library
  • Files: BTRIS, TRIS
  • Created Date: Aug 7 2007 12:34PM