Electric Motor Control TRIZ Cases

Segmented H-bridge protection ceases current conduction in exciter stators to prevent downstream load damage.

A control system detects backspin voltage on electric submersible pump cables using sensor feedback to manage motor response.

A steering controller calculates torque command values by summing converted steering-side and wheel-side operation amounts to drive the electric motor.

A motor driving device adjusts current limits based on detected power supply voltage fluctuations to maintain stable operation.

A control system estimates angular position from phase currents to manage motor operation without physical sensors.

Multi-zone protection system monitors synchronous generator operation using impedance and admittance planes to prevent damage during loss-of-field events.

A motor control device limits torque commands during power failures to optimize stopping distance.

A motor control device transitions to a specific abnormality alarm mode when detecting high repeatability faults.

Integrating a MOSFET within the starter motor housing replaces the mechanical solenoid, eliminating assembly complexity and preventing overheating.

Space vector modulation applies zero vectors to phase windings during switch-off periods.

A sensor-less electric motor control system detects stall conditions by monitoring voltage differences during the open-loop phase.

A vehicle circuit control method lowers consumer voltage to reduce current flow and then raises it at a controlled rate.

A sensorless drive apparatus for oil-pump motors converts multi-phase currents into d-q coordinates to calculate phase errors and adjust voltage commands.

Phase relays isolate failed inverter arms, distributing output across independent circuits to suppress torque fluctuations and maintain total motor power.

An electronic switch in the intermediate circuit clamps DC link voltage to prevent component damage and reduce costs by allowing lower-rated parts.

A backup controller activates relays to stop unintended motor rotation when primary switching fails.

Parallel resistance elements with PN junction diodes ensure uniform voltage distribution, preventing overload on individual diodes during overcurrent events.

A Zener diode activates a brake circuit bypass path to suppress regenerative power and prevent overvoltage damage despite control circuit response delays.

A multi-phase motor control system calculates line-to-line resistance differences to identify coil shorts.

Motor drive apparatus corrects rotor follow-up delay using control unit signal comparison.

A magnetic field sensor detects temperature-dependent flux density from a rotor permanent magnet, eliminating complex signal transfer mechanisms.

A controller detects voltage levels at designated nodes to determine the state of switch elements in a 3-phase motor inverter circuit.

Dynamic motor current adjustment counteracts thermal expansion of the object stage, preserving spatial resolution in particle beam and light microscopy.

A motor controlling device lowers output lines to ground potential when not operating the on-board motor.

A unified driver for parallel DC motors computes a motor parameter from voltage, current, and speed data to identify line interruptions.

An inductive load control device uses an H-bridge circuit to switch between energized and regenerative states for accurate short-circuit detection.

A motor control device acquires phase current values using shunt resistors to detect switching element abnormalities.

A monitoring device detects rotor position via stator inductance variations to resolve signal ambiguity without physical sensors.

Resolution conversion unit adapts high-resolution detector signals to maintain precision control after hardware replacement.

A field winding rotary electric machine integrates current data to control thermal limits.

A controller adjusts motor duty cycle based on real-time voltage and current data to maintain stable injection volume despite power supply fluctuations.

An energy assist system selection supporting apparatus generates operation and load patterns to evaluate system characteristics.

A power budget management system controls vehicle component thermal limits by tracking electrical consumption against predefined thresholds.

A transfer apparatus monitors torque fluctuations in magnetic screw systems to detect synchronization losses without external sensors.

A controller selects driving torque maps based on alternator temperature to optimize voltage change speed control.

A motor controller determines mean winding current to regulate pump delivery pressure without external sensors.

Stator current measurements calculate slip to monitor thermal conditions, enabling mode transition from induction to synchronous operation during startup.

A drive device integrates sensing and storage units to record operational parameters directly within the housing.

High-speed sensor data enables real-time fault detection and maintenance planning for inaccessible subsea equipment.

Inject voltage waveforms to determine differential cross-coupling parameters for electrical machine control.

A drive control device uses a pre-charged capacitor to short-circuit motor coils during power failure.

A rotor driving system generates an estimated revolution frequency from historical and current sensor data to produce a precise rotor driving signal.

Thermoelectric devices dissipate heat from smoothing capacitor terminals, maintaining operational temperatures in electric drive systems.

Dynamic current saturation prevents mechanical stress in electromechanical brake actuators by adjusting torque limits according to internal temperature.

A pinch detector measures motor current during a blind time period to establish a reference value and compares subsequent values against a threshold.

Calculates a compensation angle from voltage command differences to determine rotor initial position, eliminating the need for external dynamo systems.

A motion control system reduces network traffic by reporting only significant sensor drifts instead of continuous high-frequency data streams.

A power conversion device uses semiconductor switching elements to separate motor phases from the inverter drive circuit.

A motor control system adjusts voltage duty cycles and phase advance angles to maintain desired torque output.