E-MOTORS
E-motor design faces a critical challenge: escalating power densities. As electric vehicles demand more compact and potent motors, traditional water-cooling methods fall short. Enter the innovative solution: oil-cooled e-motors.
E-motor cooling presents several challenges. Managing end-winding operating temperatures is crucial to prevent overheating and ensure longevity: temperature hotspots identification is key to prevent e-drive failure (i.e. due to magnet demagnetization). Other challenges are non-uniform cooling or airgap contamination disrupting the magnetic field and increasing e-motor losses.
Particleworks creates digital prototypes of e-motors and e-drives to investigate:
- Cooling of windings, stator and magnets (Heat Transfer Coefficient maps)
- Coolant flow split in distributing system for different rotor velocities
- Air drag effects on oil distribution due to windage effects
- Contamination of airgap due to oil
- Temperature distribution in e-motor (considering also electromagnetic losses)
