Electric Motor Control TRIZ Cases

A rotating electric machine winding temperature estimation device calculates heat reduction and heating values using coolant data.

A motor control device adds backlash correction to position commands when positional error variation exceeds a reference value.

A control circuit limits electric power supplied to a steering motor by calculating voltage-based upper bounds for battery and auxiliary power sources.

A motor control device calculates friction information based on vehicle state to dynamically adjust steering friction levels.

Protection circuit section absorbs surge voltages using reverse blocking Zener diodes and dynamic clamp circuits.

A motor shutdown circuit charges a storage capacitor using back electromotive force to manage electrical energy during power loss.

A limit value control unit adjusts current thresholds in an inverter apparatus to manage motor drive dynamics.

Analyzes driver output potential waveforms to detect leakage current and resistance, preventing sudden breakdowns in TN networks.

A motor control device manages voltage drop through active switching elements to eliminate counter electromotive force currents.

A vehicle motor drive circuit uses a protection switch unit to lower control signals when floating voltage appears on the digital ground line.

Dynamic threshold calculation using voltage-current unbalance ratios prevents nuisance trips and under-protection in three-phase induction motors.

Intermediate circuit voltage limiting circuit clamps surges using Zener diodes and active clamping.

A motor driving circuit adjusts voltage via a multiplier to maintain ideal sine wave coil current across varying speeds.

Split trip curve regions with parallel software modules provide redundant instantaneous trip detection, reducing nuisance tripping during motor startup.

A motor driving apparatus uses counter electromotive force detection to monitor actuator state via shunt resistors and an operational amplifier.

Controller drives extra converter phases to heat the cooling medium, restoring switching element withstand voltage when temperatures drop below limits.

A motor protection method measures current and voltage to define permissible operating ranges for real-time critical state detection.

A generator control system detects output rate of change to activate field current discharging.

A motor control device uses a switch element to discharge induced voltage from an electric motor during uncontrolled stopping.

Segmented control algorithms counteract active behavior in specific frequency ranges, preventing unwanted energy injection into the grid.

Periodic bidirectional motor rotation balances transmission loads, extending service life while reducing tool weight and improving ergonomics.

A Kalman filter estimates winding temperature using high-frequency resistance changes derived from the skin effect.

A single inverter apparatus manages harmonic filtering and regenerating energy control for adjustable speed drives.

Thermal control of a composite permanent magnet reduces dragging loss at high speeds by lowering magnetic flux without increasing inverter load.

Determines accurate rotor temperature after a shutdown period to calibrate magnetic flux, avoiding errors from stator temperature differences.

A motor control apparatus manages speed command selection between position and pressure modes during mechanical transitions.

Modifying switching time generates a DC component in the output, enabling accurate stator winding resistance estimation without disconnecting the AC motor.

A controller computes reactive power offset signals using modulation index error to manage DC bus voltage in active rectifier systems.

Control unit injects test current into semiconductor switch outputs to detect defects, preventing steering impairment from undetected short-circuits.

An actuator system updates soft reference positions by detecting load steps during motor overtravel to maintain precise needle valve alignment.

A forced speed mode control system uses a bumpless regulator integrator to manage motor drive operations.

A drive arrangement uses a controller to switch H-bridge legs based on measured DC-motor current, reducing switching frequency and wear.

A control method estimates rotor position using phase current zero crossings to drive single coil brushless DC motors without Hall sensors.

A controller calculates sensor measurement differences to generate intermediate histogram data for power converter damage assessment.

A wind turbine converter generates negative sequence current equal to the negative of positive sequence fault current.

Rectangular or trapezoidal current waveforms reduce power losses in superconducting windings, lowering cooling demands while maintaining rotary stability.

A control circuit drops down the motor current limit step-by-step after startup to detect motor deterioration.

Sampling back-EMF voltage during off-periods prevents motor burning by ensuring actual speed matches preset thresholds.

A winch controller adjusts motor operation based on load limits and temperature to enhance performance.

A rotary driving apparatus uses a controller to predict stator temperature changes and close an open-close valve, storing cooling medium inside the housing.

A control device manages automatic driving states by monitoring power generator information to maintain operational stability.

Segmented voltage reduction prevents overheating while maintaining dashboard lighting stability.

A pulse pattern generation device calculates effective current and iron loss to optimize inverter switching control.

A drive control device adjusts PWM pulse periods to manage current in an inductive load.

Controller analyzes PWM and encoder feedback patterns to detect signal abnormalities without adding hardware complexity.

A shift range control device calculates motor acceleration moving averages to drive a motor toward target positions without an output shaft sensor.

A processor triggers a boost circuit to deliver an initial high voltage, reducing flat motor starting time while maintaining rated operation.

A control system estimates alternator temperatures to adjust blower fan airflow for precise thermal management.

A machine learning controller adjusts electric motor acceleration profiles based on ambient temperature.

Calculates actual winding distribution via sequence components to detect inter-turn faults, preventing erroneous detection caused by sinusoidal assumptions.