Electric Motor Control TRIZ Cases

A half-bridge bootstrap circuit adjusts the minimum duty cycle to charge the boot capacitor for high-side switch operation.

A gear motor integrates a power detection circuit within its terminal box to calculate electrical power independently of voltage fluctuations.

Virtual resistance decouples d-axis and q-axis voltage commands, stabilizing torque tracking near peak power points.

A driver circuit limits pulse width modulation duty cycles to protect electronically commutated machine phases from overcurrents.

A protection switch circuit reroutes current pathways to prevent overvoltage application to capacitors in three-level chopper systems.

Alternating coil pulses reduce lubricant viscosity at low temperatures, enabling reliable start-up without overdesigning the drive circuit.

A brushless starter generator switches its exciter stator supply from direct current to alternating current during the start-up phase.

A converter apparatus detects power device failures by comparing post-disconnection currents against threshold values.

A processing device estimates winding temperature using fluorescence intensity changes triggered by voltage application.

A motor control device calculates current deviations and applies filtering to index data for accurate power line breakage detection.

Alternator control circuitry detects high voltage signals and activates pull-down switches to manage excitation current delivery.

A control device injects voltage pulses into a synchronous machine stator to detect current responses for rotor angle estimation.

Dynamic derating allows short-term power peaks without overdesign, resolving the trade-off between continuous rating and compact motor weight.

Segmented function checking distinguishes integrated IC failures from encoder issues, preventing erroneous part replacement during low voltage conditions.

Injecting high-frequency voltage creates artificial saliency, enabling accurate rotor position estimation at low speeds without physical sensors.

A servo motor control system generates ideal command waveforms for jerk, acceleration, speed, and position to enable precise tracking.

Movable magnets manipulate magnetic fields to store kinetic energy in a flywheel, resolving battery inefficiencies by enabling controllable storage duration.

Outrigger systems extend laterally to counterbalance loads positioned away from the boom axis, preventing tipping during asymmetric lifting operations.

An arc flash protection device detects personnel presence near a generator set and initiates an automatic shutdown regime upon short circuit detection.

A circuit protection apparatus measures motor rotation speed to calculate counter electromotive voltage and opens a switch when the voltage exceeds output limits.

A motor drive device rectifies phase voltages from an idling spindle motor to power a voice coil motor.

A hybrid controller manages brushless DC motor commutation using mutual inductance and back-electromotive force signals.

A coil temperature estimating section calculates phase calorific values using motor current data to determine thermal states.

Segmenting protection strategies by anomaly type reduces unnecessary operation halting while preventing damage to permanent-magnet synchronous motors.

A wireless power transmitter executes carrier sense in adjacent frequency bands to detect signals before transmitting electromagnetic energy.

Control unit sets opposing torque directions for armature windings to suppress output torque, eliminating complex terminal voltage detection circuits.

Electronic circuit detects coil voltage and compares values against reference thresholds to reduce error frequencies in industrial brake systems.

A refrigerant-coolant heat exchanger couples the battery coolant circuit to the air conditioning refrigerant loop.

A rotating machine controller drives three-phase and direct current motors using shared switching elements.

Parallel varistors clamp voltage spikes across series capacitors, preventing bursting and electrolyte dispersion without adding bulky fuses.

An estimation unit calculates motor electric angle from response output when detection fails, maintaining steering assist reliability.

Microprocessor selects stored torque data sets to maintain accurate torque control when substituting permanent-split capacitor motors.

A motor controller adjusts control parameters to maintain normal energization system output.

Accumulating motor driving time enables precise calculation of bearing remaining lifetime, preventing unexpected failures through timely maintenance warnings.

A single bidirectional line carries speed control and status signals, reducing wiring harness complexity in vehicle lighting systems.

A synchronous machine control system monitors rotor inductance differences to validate sensorless angle detection.

A control parameter exchange unit manages data transfer between a PLC and drive control units.

A control module compares stator winding and ambient temperature readings to detect sensor errors in motor vehicle alternator-starters.

A power conversion device detects AC motor rotation direction by analyzing freewheeling current patterns at specific voltage intersection timings.

A motor drive controller manages emergency braking by switching the motor to a generator state.

A control unit converts operation instructions into parameters using acquired detector data and external information.

A motor control device estimates power supply current to determine overcurrent faults accurately.

A grid-tied converter dynamically predicts maximum reactive power capability using internal status and external feedback.

A motor driving device detects inverter abnormalities using feedback control signals and three-phase AC voltage sums.

Switchable neutral leads in a redundant wye-wound motor isolate faulty windings, preventing overheating and maintaining operation during circuit faults.

A control unit accumulates a cumulative value based on direct current-link voltage and time to block inverter output when thresholds are exceeded.

A detection system monitors rotor winding temperature and stator current to identify dynamic turn-to-turn short circuit faults in synchronous generators.

A control system reduces magnetic stator flux during high temperature operation to prevent magnet demagnetization.