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SAFEDRIVE – A Full Series Hybrid Vehicle Drivetrain

Boekbijdrage - Boekhoofdstuk Conferentiebijdrage

SAFEDRIVE is a project funded under the European Union Framework Programme 7 (FP7) with the aim of providing the members of the European Association for Battery, Hybrid and Fuel Cell Vehicles, AVERE, with a Full Series Hybrid Vehicle Drivetrain, which may also be used in a Pure EV. This drivetrain is modular and scalable, and can be adapted to suit a wide range of vehicles, from small cars to heavy goods and utility vehicles. The project will also deliver to members a 'design toolbox' that allows computer configuration and simulation of a particular vehicle and drivetrain implementation, and a standard vehicle controller electronics package that is configured by the toolbox. [1] The technology uses far lower voltages than other hybrid drive systems in current use, so that the static (battery) voltages are comparable with those used in 48 Volt DC systems in fork lift trucks and other familiar utility vehicles, which have had such a good safety record over a 100 year history. Higher (but still comparatively low) voltages are only generated in the motor drives and generators when moving on the road. Research has demonstrated that the use of lower voltage systems also has cost and weight benefits; batteries and ultra-capacitor systems built out of smaller numbers of larger cells have less passive mass and thus higher energy density, fewer points of failure, and require proportionately fewer battery management components. The cost of thicker conductors is minimal and offset by the far less complex insulation and protection needs.This paper describes the project test vehicle, which will be a light 'car-derived' van and the implementations of the other technologies at this scale. It describes the high frequency, multi-phase, bidirectional, Boost-Buck 'Split-Pi' DC-DC controller which combines all necessary electronics functions, including regenerative braking, power distribution and charge control, in a single 64kW unit. This unit has high power efficiency of 95-98%, and only requires air cooling [5][6]. The paper will also outline the properties of the novel drive motors, which directly drive the wheels without any reduction gearing, giving comparable sustained hill climbing to that of a conventional IC engine vehicle.
Boek: EVS26
Trefwoorden:series HEV(Hybrid Electric Vehicle), DC-DC, AVERE, brushless motor, rare earth material
  • ORCID: /0000-0003-3495-2256/work/92662787
  • Scopus Id: 84877605514