Association With Control/Drive Circuits TRIZ Cases

An end-face induction coil harvests rotor stray-field energy to power temperature sensing, reducing overheating risk without batteries or slip rings.

A deformation reducing member at the grip-controller interface absorbs drop forces, limiting housing deformation and controller breakage.

A one-piece ECU housing and heat sink improves PCB heat conduction in electric power steering while cutting assembly steps and cost.

Aligned cooling fins let the motor housing and electrical module share one airflow, simplifying construction while improving heat dissipation.

A hollow-rotor dual-stator layout boosts torque and output density while phase shift control cuts harmonics, torque ripple, noise, and vibration.

Two magnetic sensors and a back bias magnet use Vernier phase shift to resolve rotor-stator position for accurate startup commutation.

A high-conductivity surface layer confines eddy currents in contactless rotor energy transfer, cutting heat buildup and transfer losses.

Electromagnets move a wiper block along a rail, removing linkage friction and wear while widening aircraft windshield coverage.

A plastic connector plate with a metal ring press fits the EPS motor housing, cutting fasteners while preserving grounding and heat transfer.

Linked water and oil cooling uses an oil-water heat exchanger and coordinated pump-fan control to support high-power motor output with lower energy use.

An integrated stator-rotor propulsor layout harvests electric potential while cutting weight and profile drag for more efficient eVTOL flight.

Mounting drive electronics on the stator inner surface cuts cable bulk, shares cooling, and raises power density in compact motor assemblies.

Dual voltage thresholds cut PWM duty cycle before shutdown, helping power tools recover from sudden voltage drops and finish operation.

An extension member moves board and connector mounting beyond the motor case outline, increasing layout freedom in compact drive assemblies.

A recessed heat sink and gap-filling thermal material improve control board heat dissipation while easing gap tolerance in rotating machines.

A dedicated sealing surface around busbar openings blocks gas or media exchange between motor and inverter while avoiding complex overmoulding.

Bi-directional USB power and data let a motor drive support mains-free programming, faster updates, and common mode noise mitigation.

Sandwich-type insulated stator mounts and a parallel RC path cut common mode currents, lowering EMI and stator insulation stress.

Short-circuited split inner-layer hairpin legs counter the proximity effect, balancing current density and reducing overheating and AC copper loss.

A high-pole asynchronous traction drive uses high-frequency conversion and liquid cooling to cut rotor losses, noise, size, and maintenance.

Rigid conductive plates link inverter terminals to the PCB, preventing misalignment, reducing parts, and saving assembly space.

Magnet orientation, armature members, and non-conductive grease cut flux distortion, torque ripple, and bearing electrical erosion.

Asymmetric rotor pole reluctance and merged stator windings cut noise and torque ripple while improving torque and power factor.

Liquid sealant flows through a guided passage to lock the fixing member and seal the power steering connector without costly locking bolts.

Overlapping E-shaped cores and bridge-connected coils combine multi-axis rotor sensing in one low-cost assembly with linear, non-contact feedback.

A terminal block routed radially through the partition wall connects motor and inverter bus bars without adding axial length, enabling a more compact drive unit.

A concave motor bracket with bearings at both ends stabilizes the rotor to cut vibration, noise, and bearing wear in high-speed hair dryers.

Liquid-cooled heat sinks and an annular flow path let a nested inverter fit inside the motor housing without sacrificing thermal robustness.

A zigzag protection component blocks water and dust in the motor assembly without coating steps, cutting production time and cost.

A water-oil plate heat exchanger cools the motor and converter in one housing, cutting cooling circuit complexity and improving vibration robustness.

S-shaped phase conductors replace separate busbars to cut copper use, simplify motor-inverter installation, and improve sealing reliability.

A Hall sensor placed opposite the stator coil enables precise commutation in a one-phase brushless motor without switching the coil off.

Adjacent motor and inverter placement shortens phase paths, equalizes inductance, and cuts inverter weight, noise, and energy loss.

Metal shield walls isolate dual EPS inverter circuits from PWM noise, improving shunt-based current detection accuracy and redundancy.

Dynamic speed commands adapt to changing load and DC supply voltage, improving electric tool efficiency and helping prevent motor overload.

Duty-ratio control changes generator input impedance to brake excessive movable-part displacement and prevent collision during vibration harvesting.

Hermetically sealed single-tooth modules isolate faults, reduce torque loss, and protect electric drives from liquid ingress and explosions.

A detent mechanism and motor current-based control position the output shaft accurately without a rotation angle sensor, cutting cost and sensor errors.

A tuned induction coil harvests rotor stray-field energy to power onboard sensors, enabling accurate temperature feedback without slip rings or batteries.

Dual parallel windings on each stator tooth raise slot fill and cut resistance, boosting BLDC motor torque, power density, and thermal efficiency.

An integrated bearing cooling body uses fan airflow and cooling fins to cool the motor and electronics while cutting parts and mounting complexity.

Directly connecting three-phase motor windings to converter PCB terminals cuts wiring, contact resistance, and junction-box heat issues.

Real-time image-guided flyer arm control optimizes coil turn paths to cut wire use, reduce losses, and keep motor winding parameters consistent.

An active rectifier integrated with the generator in a waterproof enclosure stabilizes offshore power output, cuts cable losses, and improves heat dissipation.

A non-symmetric PCB stacks logic and power modules on opposite sides to save vehicle-motor packaging space while improving heat flow and connectivity.

Metal shield walls isolate PWM noise from shunt-based current detection in integrated electric power steering inverters, improving signal accuracy.

By coupling water and oil loops through an oil-water heat exchanger, this case improves EV motor cooling efficiency and cuts energy use.

A rotary valve and isolated motor compartment direct pump flow without external actuators or complex dynamic seals, reducing fluid ingress risk.

Conductive flux barriers between rotor poles redirect magnetic flux and induce eddy-current shielding to raise torque density without enlarging the motor.

Concave PCB edges and axial spacing from the bracket cut fluid collision in an impeller motor, improving flow rate in compact designs.