Association With Control/Drive Circuits TRIZ Cases

Switching between rolling and gas-lubricated bearings by motor speed cuts pump power use and friction losses while maintaining reliable operation.

Lateral end-cap wings shift intake vents outside the grip zone, preventing blockage and improving cooling of the motor and control board.

Separating power and control electronics into perimeter and end housings improves pump motor cooling, compactness, noise, and assembly speed.

Dynamic motion thresholds let a power tool detect bind-up during battery and bracing events, then brake or throttle the motor.

A two-component insulation part fixes motor PCBs with spring hold-down force and sealing, enabling faster automated assembly without screws or adhesive.

Bus bar protrusions connect a passive element directly to the substrate, removing separate wires and simplifying semiconductor assembly.

Integrated connectors and raised motor-mount features secure the motor and controller, reducing decoupling risk and speeding assembly.

A single conductive contact links the stator, control substrate, and housing to simplify EMC and ESD grounding in compact automotive pumps.

Mounting the active rectifier on a fluid-cooled rotor heat sink dissipates heat better, enabling higher power output in traction motors.

A grooved cooling plate isolates the busbar while keeping PCB contact secure, cutting screw connections and simplifying motor board replacement.

A selective insulating layer leaves a PCB ground bar exposed so motor housing ESD arcs discharge safely away from sensitive electronics.

An electrical latch keeps a reciprocating tool motor energized after switch release, cutting mechanical lock parts, weight, and complexity.

Nested sealed signal pins link the stator coil and circuit board, simplifying fluid control wiring while protecting stable electrical transmission.

A single deformable contact links stator, PCB ground, and housing to simplify electric pump grounding while saving space and assembly time.

Electronic speed control replaces manual gear shifting in a construction mixer to cut noise, simplify manufacture, and improve mixing flexibility.

Multi-step voltage control lets DC fans run quieter and use less power without the cost and complexity of PWM fan circuits.

Pole polarity switching merges reversible and fixed poles to change motor pole count, improving torque density and efficiency across wide speed ranges.

Holding devices pre-position coil-core legs in a cup-shaped stator, simplifying assembly while preserving precise rotor levitation alignment.

A fire prevention member and terminal casing maintain electrical connection while blocking heat and sparking in a combined power system.

An elastic rubber coupling around the bus bar and coil terminal absorbs motor vibration to prevent welded-joint cracks and power loss.

Direct coil connections replace the interconnecting ring to cut motor size, weight, losses, and corrosion risk in damp vehicle use.

A PTO generator, battery storage, and inverter run trailer refrigeration without a separate diesel engine, cutting fuel, maintenance, and emissions.

Surface busbars raise current capacity and heat dissipation in power tool PCBs without widening traces or enlarging the board.

Non-uniform rotor tooth spacing and sequenced stator groups sustain torque at high RPM by easing coil timing limits.

Non-contact sections in a double-tube motor housing interrupt vibration transfer, cutting vehicle noise while preserving coolant flow and joint strength.

Galvanically isolated winding sections balance switch and coil currents, shrink current sensors, and reduce thermal hot spots in integrated motor-inverters.

A brake member placed between the motor and circuit board simplifies assembly of brake-equipped motor rollers while preserving wiring and power transmission.

A permanent magnet direct-drive reel replaces gearboxes to deliver high low-speed torque, reduce wear, and improve braking response.

A compartmented mid-frame guides wire slack away from rotating parts while limiting moisture ingress and improving cooling in electric machine assembly.

A shared motor-PCB housing uses overlapping layout and forced airflow to improve heat dissipation, compactness, and grip balance.

Harmonic current superposition cuts gear vibration and noise by matching gear tooth order with motor torque ripple, without a clutch.

Exposed lead ends and side surfaces stay visible above solder, enabling accurate motor control board defect inspection with shorter leads.

Directly wiring the stator to the driver board metal base layer cuts radiated interference without extra capacitors or magnetic rings.

Superimposed inverter harmonics counter spatial harmonic effects in a bearingless motor, reducing shaft support fluctuation and radial vibration.

A cantilevered heatsink creates an air gap and conducts heat to the cooler end shield, improving integrated motor-drive thermal dissipation.

Separating the power pin from a sheathed interlock wire prevents insulation breakdown and simplifies inverter-side assembly.

A curved serpentine resistor layout cancels magnetic fields, enabling low-inductance matrix converter motor drives for precise pump speed control.

By placing the PCB at the motor end face, this pole tool shortens overall length, shares airflow for cooling, and improves grip balance.

Directly grounding the stator to the driver board metal base cuts motor radiated interference without extra magnetic rings or capacitors.

Integrated boss-mounted pressing members replace bolts and clamps to simplify inverter assembly and improve switching-element heat transfer.

A symmetrical terminal box base enables flexible wiring exit direction while drainage, seals, grooves, fans, and fins improve moisture control and cooling.

Double-insulated ELV motor control replaces earth-dependent frequency converters, enabling portable lubrication where no protective earth is available.

Mechanically interlocked contactors and disconnect switches isolate VFD or RVSS bypass paths, prevent backfeed, and allow safe unit removal.

Base-member protrusions contact the cover inner wall to hold alignment under vibration and protect motor drive electrical components.

A voltage-divider and bypass-diode circuit conditions floating winding back-EMF for precise zero-crossing detection and sensorless BLDC commutation.

A timed reverse or free-rotation stall state before braking helps power tool motors reach consistent stall torque and avoid overheating.

Rotor-position feedback drives stator conductors and coils to generate magnetic fields without permanent magnets, simplifying motor-generator design.

A segmented pump-motor housing integrates cover and mounting functions to cut sealing complexity, weight, and space while protecting fluid conveyance.

By raising common mode impedance near motor resonance, this circuit approach suppresses CM voltage and current transients without costly filters.

A dual-battery layout with backflow suppression keeps the motor running longer and preserves communication when the main battery is removed.