Electronic Commutation Motor Control TRIZ Cases

A microcontroller adjusts the triac firing angle to maintain constant motor speed, eliminating oscillations that disrupt air flow and pressure switch operation.

A control device processes d-axis and q-axis current values through multi-point detection, averaging, and low-pass filtering to generate corrected feedback signals.

Regeneration dissipation control utilizes motor windings to dissipate regenerative energy, eliminating heavy external dump resistors.

A control unit determines command voltage using offset compensation to ensure stable motor restart.

A model predictive control method generates modified pulse patterns to damp resonant oscillations in electrical converter systems.

A motor control device specifies sine wave frequencies near the reciprocal of the electrical time constant to calculate resistance and inductance.

A generator control method injects harmonic currents to counteract radial and tangential force ripples.

Detects back-EMF zero-crossings to estimate electrical angles, eliminating position sensors and reducing device complexity.

Parallel regenerative line with bridge circuit converts direct current to alternating current for injection molding machines.

Dynamic sampling window adjustment maintains measurement precision under low modulation indices and unfavorable duty cycle conditions.

A motor control system calculates optimal flux levels using stored speed-dependent slopes and estimated torque values.

A power conversion apparatus uses a voltage distortion corrector to superimpose compensation values on current controller outputs.

Dual controllers calculate compensation torque from mapped parameters to minimize shaft torque error despite long-distance voltage drops.

A parallel capacitor filter reduces radiated emissions by drawing noise current to ground, avoiding oversized conductors required by ferrite cores.

Segmenting control law processing reduces weight, heat, and electromagnetic interference in brushless motor systems.

A control circuit uses solid state switching devices to manage motor taps via DC signals.

Zero vector selection counters active vector contributions to reduce link choke saturation and optimize system size.

A voltage limiting module computes a feedback current using compensation gains to adjust the motor drive controller input.

A motor control device uses variable integral gain to cancel interference components in specific rotation ranges.

Vector classification and auxiliary synthesis reduce common-mode voltage magnitude without increasing calculation complexity.

A converter compares detected motor current and auxiliary values against expected maximum limits to enforce safe torque boundaries.

An AC motor control apparatus uses an electric current estimation unit to perform inverted dq conversion and dq conversion for precise phase synchronization.

A dual inverter power conversion apparatus maintains motor operation through independent switch control and neutral point referencing.

A power converter controller maintains switching patterns for minimum time limits to enable accurate phase current detection.

Magnetic flux observers calculate estimated stator and rotor flux values to improve torque control precision without physical sensors.

Dynamic modulation adjustment minimizes harmonic losses and Joule heating in the rotor by varying frequency relative to rotational speed.

A capacitor across the FET gate and source terminals delays switching to protect against load-dump transients.

Multi-drive elevator control device distributes torque commands via communication to shorten gate signal lines.

Segmented DC-DC converters use parallel current paths to bypass inductors, reducing conduction losses that degrade automotive drive range.

Harmonic and stabilization controllers segment the control signal to reduce noise while maintaining stability with minimal computing power.

A harmonic regulator system transforms feedback signals into a harmonic reference frame to regulate individual harmonics.

A multiphase brushless DC motor controller detects back electromotive force to determine barrier position and torque.

An inverter control device estimates motor rotation speed and adjusts slip frequency references to maintain stable direct current terminal voltage.

A processing unit estimates magnet temperature by calculating the difference between total magnetic flux and reluctance flux.

A rotating electric machine controller estimates phase currents using mathematical relationships when direct detection fails.

Tri-stating floating phase inputs during PWM periods enables direct back electromotive force zero cross detection via voltage comparison.

Square-wave excitation identifies stator and rotor resistances to calculate magnetizing curves, reducing sampling errors and computational demands.

A motor control device calculates a dynamic compensation gain to linearize voltage command values against output voltage.

Modifying q-axis current commands limits machine terminal voltage, resolving high-speed instability caused by d-axis flux sign reversal.

Segmented computing units execute parallel gradient projections to minimize harmonic distortion while maintaining fast response times during transient events.

Electrical machine control system generates precise crankshaft angular position signals using real-time torque modulation and rotor feedback.

Sequencer performs input switching without waiting for A/D conversion completion, eliminating idle time and improving processing speed.

Spectral analysis of phase currents determines direct and quadrature inductance values during steady-state operation.

Determines sensorless PMSM rotor orientation using high-speed saliency pulses to resolve measurement precision versus low-speed back-EMF limitations.

Extends inverter switch duty cycles below a threshold to prevent inadmissible short pulses and ensure symmetrical thermal load distribution.

A method estimates discrete instantaneous angular speed using stator current and voltage signals processed through a simplified mathematical model.

A voltage regulator introduces negative flux current to reduce motor back-EMF during constant speed operation.

Dynamic high frequency injection decouples stator current signals to resolve low-speed position estimation errors in sensorless PMSM drives.

A motor control device discriminates motor type using driving current to enable efficient startup.

A motor control apparatus acquires phase current values at specific timings based on command amplitudes to prevent switching noise.