Technological projects portfolio
CTAF
A new class of electrical machine providing a high level of mechanical power from low-voltage power supplies without compromising efficiency
Investment: €160k
Scope: Transport
Scientific field(s): Ecotechnology and Energy / Mechanical Engineering
Institution(s): CNRS - CentraleSupélec - Université Paris-Saclay - ENS Paris-Saclay - ENS Rennes - CY Cergy Paris Université
- CNAM - UGE - Centrale Lyon - INSA Lyon - Université Claude Bernard Lyon 1 - Sorbonne Université
Development: Technology to be marketed
USE CASES
The national low-carbon strategy aims for the complete decarbonization of transport by 2050, in particular by switching to electric motors. However, in certain mobility segments, the mechanical power required reaches several hundred kilowatts, requiring the use of batteries of several hundred volts.
The CTAF concept proposes an innovative drive train structure, multi-source and modular, aiming to provide a high level of mechanical power from low-voltage supplies, i.e. a few tens of volts, without sacrificing efficiency.
ADVANTAGES
Numerous advantages are derived from a low-voltage multi-source power supply and this applies to every element in the chain. Regarding the battery, controlling the accumulators is easy and safety, in the case of handling, is greater. Regarding the inverter, the footprint and weight are reduced. The losses due to switching are also lower. With regard to the electrical machine, the breakdown of the insulators is prevented, increasing the life of the motor. Finally, power splitting improves the resilience of the system in the event of a component failure.
APPLICATIONS
This technology aims for the various segments of electric mobility requiring high mechanical power and wishing to control the supply voltage level. i.e. air transport, heavy goods vehicles, rail or automobiles can benefit.