An assessment of ultra-capacitors as the power cache in Toyota THS-II, GM-Allision AHS-2 and Ford FHS hybrid propulsion systems

Author

Miller, John M. ; Everett, Michael

Author_Institution

J-N-J Miller Design Services, MI

Volume

1

fYear

2005

fDate

6-10 March 2005

Firstpage

481

Abstract

In this paper a brief history of the development paths leading to power split concepts is given. The power split architecture is used as the comparison platform because the global OEM´s have converged to the electronic CVT in two different configurations, Toyota and Ford to the single epicyclic gear set, THS and FHS respectively and GM-Allison to the dual epicyclic gear set, AHS designs, each requiring a pair of electric motor-generators in order to deliver their intended function. The power electronic architecture for the Toyota Hybrid System, THS can be in either a battery unbuffered THS-I or battery buffered via a buck/boost converter as in THS-II. The GM-Allison Advanced Hybrid System, AHS is configured as a battery unbuffered configuration, but it could also be realized using the battery buffered configuration. Benefits of ultra-capacitor augmentation of the energy storage system in both unbuffered and buffered configurations are investigated

Keywords

automotive electronics; electric propulsion; hybrid electric vehicles; power convertors; power transmission (mechanical); supercapacitors; Ford FHS hybrid propulsion systems; GM-Allision AHS-2; Toyota Hybrid System; Toyota THS-II; battery unbuffered configuration; boost converter; buck converter; electric motor-generators; epicyclic gear set; power cache; power split architecture; ultracapacitors; Automated highways; Batteries; Energy storage; Engines; Flywheels; Gears; Power generation; Propulsion; Traction motors; Vehicles;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2005. APEC 2005. Twentieth Annual IEEE

Conference_Location

Austin, TX

Print_ISBN

0-7803-8975-1

Type

conf

DOI

10.1109/APEC.2005.1452980

Filename

1452980