ConnectVolt
  • April 12, 2026
  • 2 minutes Read
Fraunhofer IISB develops 750 kW hairpin winding traction motor for hybrid-electric regional aircraft, achieving 8 kW/kg

Fraunhofer IISB has developed a 750 kW permanent-magnet traction motor for hybrid-electric regional aircraft, hitting 8 kW/kg power density through a combination of thin-lamination electrical steel, hairpin windings and direct oil-spray cooling. The machine uses NO15 (0.15 mm) electrical steel—a thin-lamination grade that reduces eddy current and AC losses at high rotational speeds—to support…

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