Electric Machines TRIZ Cases
- Laminated Motor Core Structure With Selective Tooth Adhesion
Alternating bonded and unbonded tooth parts with core-back fastening reduce curing strain and iron loss in laminated electric motor cores.
- Hairpin Winding Layout for Balanced Parallel Motor Currents
Non-adjacent hairpin sub-winding layers balance back-EMF, prevent current loops, and cut copper loss in electric motors.
- Integrated Motor Cooling Structure Without External Air Intake
Internal air circulation plus water cooling removes the air-cooled radiator, improving enclosed motor heat dissipation without foreign substance ingress.
- Soft Magnetic Alloy Annealing for Low-Loss Motor Laminations
Spatially selective electromagnetic annealing tunes strength and core loss across motor laminations for more efficient, durable EV motors.
- Electrical Steel Insulation Coating for Adhesion and Low NOx
Controlled nitrogen content and coating roughness preserve adhesion after annealing while suppressing NOx from electrical steel sheets.
- Flat Wire Motor Winding Layout for Torque Fluctuation Suppression
Staggered short-pitch flat wire windings cut torque fluctuation and Back-EMF harmonics while keeping motor manufacturing simple.
- Segmented Stator Pin Layout for Fractional Pitch Coil Assembly
Radially staged stator pins and bus bar connections simplify fractional pitch coil assembly and reduce motor winding complexity.
- Flexible Coil Substrate Layout for High-Voltage Phase Isolation
Larger spacing between adjacent phase coils on a flexible winding substrate prevents contact after cylindrical winding and improves motor withstand voltage.
- Laminated Core Adhesion Ratio for Low-Strain Magnetic Performance
An adhesion area ratio of 1% to 40% bonds electrical steel sheets, limiting displacement and strain to preserve magnetic properties.
- Sintered R-T-B Magnet Composition for High Coercivity Without Dy/Tb
Pr and Ga grain-boundary diffusion raises remanence and coercivity in sintered R-T-B magnets while reducing Dy and Tb dependence.
- Axially Clamped Stator Core Structure for Reduced Iron Loss
Axial end-plate clamping shifts stator core stress out of plane, reducing iron loss in the core back and teeth while maintaining secure fixation.
- Stator Flux Barrier Layout for Low-Torque-Ripple Rotary Machines
Axial flux barriers near stator fixing portions balance magnetic flux while preserving bolt fastening strength to cut torque ripple, vibration, and noise.