Electric Motor Control TRIZ Cases

A motor drive apparatus corrects speed commands during AC voltage drops to maintain continuous operation.

Independent control units isolate inverter faults, preventing excessive current flow and enabling continued steering operation.

Applying transient high voltage to an exciter winding accelerates magnetic field build-up, resolving slow torque response in high-inductance drive devices.

Synchronizes phase short circuits with natural frequency to reduce valve stress during load shedding de-excitation.

A control unit compares electric machine phase currents against reference values to identify the operational mode and trigger error signals.

Resistive shield termination damps reflected voltage transients, reducing insulation stress without bulky filters.

Segmented modules compare calculated torque against thresholds to prevent mechanical fatigue during switching operations.

A brushless permanent-magnet motor control method measures phase current magnitude during freewheeling intervals to determine rotor position.

Segmented protection modules isolate motors with maintenance conditions, restoring electrical power to unaffected units and reducing operational downtime.

A motor control device switches rotating axes to adapt sensorless estimation methods based on rotor speed.

A vibration motor control device adjusts drive signal voltage across operational phases to generate rapid start-up and fast stoppage torque.

A power converter control device switches between asynchronous and synchronous PWM modes to stabilize multiplex-winding motor operation.

A state observer extracts DC link capacitor current harmonics to identify input phase loss conditions in adjustable speed drives.

A motor control device detects power feeding abnormalities using inverter input voltage and motor current thresholds.

A motor failure detection system uses torque sensor data to identify stuck conditions when position sensors fail.

A heat conduction pattern connects a switching device output pad to a temperature protection circuit.

A precharge voltage detection circuit diagnoses capacitor electrode shorts and voltage shortages before relay testing begins.

An independent energy supply and emergency controller switch inverter output stages to a safe short-circuit mode during power transitions.

A generator droop curve adjusts output frequency based on motor load feedback to balance mechanical loads between AC motors.

Voltage detector identifies ground faults by monitoring DC supply potential, reducing detection time and circuit complexity.

Dynamic voltage adjustment normalizes cooling fan currents, preventing inverter trips and downtime caused by abnormal electrical loads.

A motor driving device selects data from specific acquisition periods to determine current levels.

A segmented controller system monitors phase voltages across insulated subwindings to estimate back electromotive force and determine commutation timing.

A diagnostic device uses non-contact electric field sensors to measure voltage curves alongside Hall effect current detection.

Abnormality detector monitors high-side and low-side instruction signals to identify simultaneous switching states in rotating electric machine drivers.

A differencing comparator uses a transconductance circuit to compare differential input signals against programmable thresholds.

Switching circuit groups select pre-generated drive signals from redundant microcomputers to prevent sudden torque changes during system failure.

A motor control device records reference measuring values to adapt revolution speed tables for precise operation.

A motor drive circuit uses a low-capacitance capacitor to reduce inrush current and eliminate bulky components.

A protective device derives speed from phase currents to switch an inverter between active short-circuit and freewheeling modes.

A motor control apparatus uses temperature difference calculation to detect abnormalities in power inverter circuits.

A magnet temperature estimation device calculates moving averages of motor rotation parameters to input into a trained neural network model.

A dual-shaft preconditioner employs independent variable speed drives to control rotational speeds and directions for each mixing shaft.

A relay welding detector uses a signal generator and current transformer to identify contact faults through induced electrical signals.

A bus transient control component bypasses selected rectifier phases to regulate current and reduce common mode voltage.

A control system detects wiring errors at startup by comparing drive unit feedback values against pre-set thresholds to prevent dangerous motor operations.

A failure determiner monitors motor deceleration to detect brake device faults in electric working machines.

Drive unit monitors output current during load switch opening to enable automatic soft start, eliminating high starting current impulses and process stop time.

Two series semiconductor switches manage motor current paths in electric power tools to ensure reliable operation.

A motor control apparatus limits torque during voltage sags and adjusts speed commands to prevent overspeed alarms upon power restoration.

Dynamic gate resistance adjustment suppresses electromagnetic noise and bearing corrosion caused by capacitive coupling in electric drive motors.

A motor parameter-setting module dynamically adjusts resistance and capacitance values to match specific operating stages.

A DC electric motor control device performs reverse rotation verification before normal operation to ensure safe drive initiation.

Electronic control device detects intersystem short-circuits in multiphase motor drives using asymmetric PWM carrier phases.

A parameter learning system estimates machine parameters using voltage command errors during feedback control.

Predicting permanent magnet temperature via stator coil data prevents irreversible demagnetization by adjusting inverter switching frequency and motor current.

A real-time vibration state monitoring system calculates mechanical parameters from electrical signals to control linear motor drive amplitude.

Dynamic slew rate adjustment reduces heat emission and prevents transistor damage in high temperature environments.

A brushless motor controller switches between normal and under-voltage modes using distinct voltage thresholds to manage power states.

A DC-bus capacitor monitoring system estimates capacitance and ESR values using self-calibration during normal inverter operation.