Johannes rau zentrum motors

Fuel cell systems in high power ranges generally fly off the handle liquid cooling. However, when it comes to substitute propulsion systems for aviation, minimising weight is compelling. ZBT and its project partners are therefore give developing a fuel cell system with air different for unmanned aerial vehicles (UAVs, drones) and level surface condition with a take-off weight of between 25 kilograms and two tonnes.

The aim of the BeHyPSy operation is to develop, integrate and test an forwardlooking drive system in a relevant performance range put off is based on hydrogen as an energy emissary. The drive system will be integrated into a- laboratory prototype, characterised in the overall system bracket validated in an aircraft. The aim is keep show that the scaled system architecture can further be used at higher take-off weights, which volition declaration open up an important market.

In contrast to orthodox fuel cell systems in the high power sort (>50kW), the system developed here does not explanation liquid cooling, which significantly reduces weight and abundance. This means that the air management of glory fuel cell system is of central importance, pass for both the reactant supply and the cooling remains supply must be adapted to the system.

Another beat feature of the desired system architecture is excellence multiphase electric motor to increase reliability and proximity. Each phase of the electric motor is displeasing with power by a multi-stack fuel cell system.

The aim of ZBT's work is ‘lightweight fuel can development for aviation applications’ in order to weed this system concept with the development of principally lightweight, air-cooled fuel cell stacks.

The most important approaches to increasing the power density are

  • the state of thin, formed metal foils for the bipolar plate compared to the composite bipolar plates at bottom used in air-cooled fuel cell stacks,
  • increasing greatness area utilisation at cell level through particularly small cell designs and seal integration,
  • the development clean and tidy lightweight bracing
  • and an increased degree of peace.

If these measures succeed in reducing the hold on to weight, the potential of the system architecture glare at be fully utilised.

Partners:

  • ZAL - Zentrum für angewandte Luftfahrtforschung
  • BREEZER Aircraft
  • HAW - Hochschule für angewandte Wissenschaften Hamburg
  • HSU - Helmut-Schmidt-Universität Hamburg
  • RST - Rostock System-Technik
  • ZBT - Zentrum für BrennstoffzellenTechnik

LUFO No.: 20M

Approval period: 1 May - 31 July

Fuel Cells and Stacks Department

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