Modular axial flux machines for hybrid electric vehicles

Michael Lampérth, Malte Jaensch

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

Abstract

Axial flux machines have been used for various hybrid applications in the past. Their aspect ratio makes them particularly attractive for integrated starter motors and hub motors. This paper presents a novel machine design that utilises a modular concept to allow one basic set of components to be used for a variety of applications. Should the power of a one-stage unit be too low, additional stages can be added using the same key components. Implementing this technology, axial flux machines with similar aspect ratio than conventional machines can be built but having a 30% higher power-density. This paper describes the design and testing of a double and a single stage machine, rated at 400 200Nm nominal torque respectively. The double stage machine has been designed for application as a generator directly mounted to an engine to form the prime mover unit of series hybrid electric buses. The single stage finds its application in in- wheel traction systems. A weight reduction of up to 50% has been demonstrated compared to conventional motor/generator solutions under favourable operating conditions.

Original languageEnglish
Title of host publicationElectric Drive Transportation Association - 23rd Int. Electric Vehicle Symposium and Exposition 2007, EVS 2007 (Battery, Hybrid, Fuel Cell) Conf. Proc. - Sustainability
Subtitle of host publicationThe Future of Transportation
Pages193-198
Number of pages6
StatePublished - 2007
Externally publishedYes
Event23rd International Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exposition 2007 - Sustainability: The Future of Transportation, EVS 2007 - Anaheim, CA, United States
Duration: 2 Dec 20075 Dec 2007

Publication series

NameElectric Drive Transportation Association - 23rd Int. Electric Vehicle Symposium and Exposition 2007, EVS 2007 (Battery, Hybrid, Fuel Cell) Conf. Proc. - Sustainability: The Future of Transportation
Volume1

Conference

Conference23rd International Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exposition 2007 - Sustainability: The Future of Transportation, EVS 2007
Country/TerritoryUnited States
CityAnaheim, CA
Period2/12/075/12/07

Keywords

  • Axial flux motor/Generator
  • Heavy duty vehicle
  • Permanent magnet motor
  • Radially wound electric machine

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