Electric Motor Control TRIZ Cases

A detection circuit identifies overcurrents by analyzing phase current frequency components rather than relying on fixed amplitude thresholds.

A signal transmission circuit differentiates temperature and abnormality data using distinct pulse widths.

A dual motor control system uses a backup clock from a secondary MCU to keep the resolver digital converter active during primary unit faults.

A sensorless BLDC motor controller divides rotation phase angles to apply reverse electromotive force for rapid deceleration.

A dual-stator motor design adjusts winding impedance to isolate faults and maintain rotor drive.

A thermal limiter fuse uses a coaxial spring and trigger solder to disconnect circuits upon overheating.

A dual three-phase motor controller deactivates a secondary converter via a dedicated signal wire to maintain drive continuity.

A frequency control apparatus adjusts drive frequencies to minimize noise interference.

A processor calculates motor temperature using back electromotive force measurements to replace mechanical thermal switches.

A control system determines voltage-based and motor current-based torque limits to calculate a final torque limit for electric machines.

Distinct temperature thresholds prevent inverter restart after shutdowns, protecting power switches from overheating damage during high load conditions.

A vehicle power supply controller retains the main relay closed to bypass precharging delays when the bidirectional converter overheats.

Gap-filling layers conduct heat from high-power semiconductor modules to primary fins, preventing overheating during increased power density.

Dynamic shifted frequency optimization for electromagnetic transient simulation.

A method detects unipolar stepper motor blockages by analyzing current flow during commutation phases.

A resonant circuit coil made of shape memory material changes oscillation frequency with temperature shifts.

A pole direction detection device adjusts high-frequency voltage based on measured inductance to improve estimation accuracy.

Anti-windup module adds compensating signals to input commands, preventing torque command limitations from causing controller windup and instability.

A method detects inverter ground faults by sampling phase currents during zero vector states.

A fixed frequency boost converter provides rectified sinusoidal modulation to single phase AC motors for avionics cooling fans.

A motor valve control device energizes a stator to generate heat and reduce refrigerant lubricant viscosity.

A motor drive assembly links adjacent heatsinks via a connection part to enable thermal conduction between devices.

A receiver microcomputer adjusts drive timing using a synchronization signal to maintain motor operation.

A servo driver calculates frequency response to identify resonance peak gain for early state change notification.

A control device calculates power losses and temperature swings in inverter modules to maintain vehicle startability at low speeds.

A vehicle electric compressor control substrate uses segmented ground patterns to isolate high and low voltage regions on the printed circuit board.

An electronic actuator generates phase currents for precise temperature control, eliminating bulky transformers and reducing reactive power consumption.

Alternating assist and offset voltages enables smooth deceleration after user stops operating the door, resolving followability trade-offs.

Splitting brake resistance into submodules with pre-charged energy stores enables rapid power conversion, resolving long delays in fault exclusion.

Two optical couplers detect phase loss and reversal in three-phase systems, reducing circuit complexity and component count.

A detection apparatus compares pre-memorized open-state terminal voltages with real-time measurements to identify short circuits in three-phase motor switches.

A motor control device switches between activated, stopped, and suspended states to manage thermal conditions.

A variable speed drive cycles stator heating current across multiple power transistors to distribute thermal stress evenly.

A motor control device implements region-specific torque restrictions to protect components from overheating.

Separate power and control ground terminals in a vehicle rotary electric machine prevent parasitic current flow between circuits.

A generator control unit manages ram air turbine output by adjusting contactor states based on real-time frequency thresholds.

A switch path with an auxiliary capacitor protects power tool electronics from voltage spikes.

A power-generation maintaining unit manages rotor control independently to reduce microcomputer processing load.

A centrifuge control unit tracks rotor position via angle sensor pulses to regulate speed and deceleration phases.

Segmenting heavy loads across independent drive trains reduces starting current and eliminates thermal stress waiting times.

Segmented electrodes on the IC chip substrate mitigate device complexity while enhancing reliability by preventing noise propagation via self-induction.

Adaptive filters reduce harmonic distortion during downhole motor transition from pulse width modulation to six-step control.

A power conversion system adjusts converter DC voltages based on detected inverter current differences to suppress cross currents between parallel inverters.

Actuators monitor health by comparing measured characteristics against reference profiles, enabling early fault detection without adding hardware complexity.

Segmented notch filters suppress higher order resonant frequencies without increasing controller bandwidth complexity.

A porous electrode assembly uses an eggshell membrane to generate electrical energy through ion diffusion.

A hardware comparator circuit compares demodulated pulse width modulation signals with reference values to determine electrical machine operating states.

A permanent magnet synchronous motor starting method uses a preset minimum rotational speed as feedback to enable direct closed-loop control.

Segmenting fuel cell and battery storage prevents hydrogen exposure risks while improving weather resistance.

Load sensors replace mechanical linkages to detect motor disengagement, sending alerts that prevent unauthorized access.