Electric Machines TRIZ Cases

Interleaved magnets and flux concentrators reduce leakage to increase torque density for e-bikes.

A semi-trailer power generating unit recovers brake torque energy via a road-contacting wheel and onboard storage battery.

Ga-modified oxide layer covers grain boundary phase in R-T-B sintered magnet, preventing corrosive penetration while maintaining magnetic properties.

Annular recess isolates overflow resin to prevent flash and ensure proper hole filling.

Modular intermediate pieces with interlocking protrusions reduce manufacturing complexity while absorbing vibrations and noise.

Segmented distributed windings across nonadjacent slots minimize spatial harmonic losses in magnets and stator cores.

A conductor forming device uses a grooved restrainer to fold multiple unit wires into parallel wave winding coils.

An aperture through the stator enables non-contact infrared sensing of rotor temperature, avoiding power shutdown required by indirect estimation methods.

Integrated power supply terminal box merges with the drive device housing to eliminate independent connectors.

A vehicle electric motor housing features a protruding stator-core-inclination restraining portion to secure the tubular stator core.

A field winding resistance calculator derives electrical resistance from current and voltage measurements to identify interlayer short-circuits in rotating machines.

Placing a thermistor within a stator slot measures local winding temperature, enabling the controller to adjust power output and maintain reliability.

Selective nitriding stabilizes austenite phases to reduce coercivity and maintain magnetic saturation without carbide formation.

Hydrophobic and hydrophilic stator coatings direct coolant flow to eliminate localized hot spots without adding physical channels.

Alloy composition with controlled carbon and transition metal content prevents abnormal grain growth during sintering to maintain high coercive force.

Alternating fixed inner and non-fixed outer coils on stator teeth improve packing density.

Segmented columns reinforce structural rigidity while maintaining cooling efficiency in electric vehicle motors.

A magnetic connector on a wheel rim drives an alternator rotator via electromagnetic induction to generate electrical power.

Bent copper bus segments surround rectifier terminals to reduce electrical losses and thermal limits.

An integral retaining web bends around the plug flange to fix the connector, avoiding extra weight and assembly costs.

A vehicle control device adjusts recuperation torque using acceleration sensor data to optimize kinetic energy recovery.

Flexible washer portions in retainer caps accommodate thermal expansion, preventing stator twisting and NVH issues.

Multi-arc ion plating deposits heavy rare earth metal onto sintered neodymium-iron-boron magnets.

A friction roller reducer uses a pivot mechanism to enable smooth radial displacement of intermediate rollers.

Variable cross sections in stator coil segments lower electrical resistance without increasing overall stator dimensions.

Segmenting permanent magnets into asymmetrically arranged main and auxiliary units reduces material usage while maintaining high torque output.

Ionic liquid electroplating deposits heavy rare earth metals onto sintered magnet surfaces to enhance magnetic properties.

An electronic control unit drives predetermined voltage waveforms through an alternator to excite a parallel vehicle battery for internal resistance calculation.

A heavy rare earth alloy sub-alloy localizes elements at grain boundaries to enhance coercivity in neodymium-iron-boron magnets.

T-slot attachment points secure the stator within the electric vehicle motor case without inducing compressive stress in the back iron.

Strategic placement of rare earth magnets alongside ferrite materials prevents demagnetization while reducing overall component costs.

Position-dependent coil turns adjust inductance to suppress brush-commutator sparks, reducing wear and abnormal noise.

Optimized steel sheet composition lowers eddy-current loss at high frequencies, enabling higher rotational speed and efficiency.

Specific cooling and heating cycles form R-T-Ga and R-Ga-Cu phases, resolving the trade-off between coercive force and residual magnetic flux density.

Vacuum heat treatment drives rare earth diffusion into neodymium-iron-boron magnets, boosting coercive force while minimizing dysprosium consumption.

A non-oriented electrical steel sheet with controlled grain size and specific chemical composition.

Diffusing heavy rare-earth alloys into grain boundaries improves coercivity without reducing remanence in sintered magnets.

Inverting the third phase winding direction swaps power and neutral point positions, reducing busbar mass and improving vibration durability.

A non-oriented electrical steel sheet controls segregation elements Sn, Sb, and P alongside trace Ga and Ge to improve magnetic permeability.

A movable nozzle linked to a cam mechanism redirects coolant oil from an oil sump to stator windings, preventing hot spots during vehicle tilt.

Protruding parts apply load close to core to control curvature radius, reducing axial dimension and improving positional accuracy.

A guiding device on heat dissipating fins diverts escaping cooling airflow back into passages, resolving uneven downstream component temperatures.