Electronic Commutation Motor Control TRIZ Cases

A power conversion device adjusts output frequency via a correction calculation unit to stabilize induction motor speed.

A control device applies constant DC voltages to calculate rotary machine inductance from steady-state current measurements.

A transient current planning method calculates d- and q-axis voltage instruction values to optimize electromagnetic torque output in ultra-high-speed permanent magnet synchronous motors.

A control unit analyzes back EMF peak order, magnitude, and polarity to detect motor stall conditions.

A motor control system measures residual voltage during free rotation to determine speed without external sensors.

Eliminates expensive current sensors by estimating active and reactive power components from DC link voltage ripple, reducing system complexity.

Detecting output current pulsation to correct inverter voltage phase and frequency, suppressing beat phenomena without complex DC sensing.

A thyristor-based short-circuit device manages secondary winding currents in wound-rotor induction machines.

A stepper motor drive device with a transformation module decomposes phase currents into slip and torque components for precise position control.

Full-bridge double-voltage circuit with bidirectional triode thyristor switch stabilizes output voltage.

A six-step inverter generates three-phase voltages directly to the motor.

A state observer estimates power supply current using inverter input voltage and current measurements without additional sensors.

A motor drive apparatus controller gradually increases phase current through bottom switches before dynamic braking.

Segmented error detection adjusts motor gain without increasing circuit complexity or reducing calculation speed.

A controller injects position current pulses into stator poles to estimate rotor position in switched reluctance motors.

A low pass filter extracts cycle-averaged voltage for feedback control, reducing noise susceptibility and sampling frequency requirements.

A dual-interval processing scheme regenerates PWM duty cycles at half carrier signal intervals to boost inverter control speed.

A synchronous machine controller adjusts magnetic field-forming current limits in a rotor-revolving coordinate system.

A motor driving circuit uses pulse width modulation to generate speed signals from output terminals.

Separate PWM and drive circuits process dual emergency stop signals to bypass software delays and improve shutdown reliability.

A motor drive control device uses voltage thresholds to start and stop a power supply converter based on direct-current bus levels.

Hysteresis comparators regulate capacitor discharge current based on real-time power demand, reducing source current without requiring large capacitance.

A motor control device generates q-axis voltage instructions using speed deviation to maintain precise rotation.

Nesting the rotor position sensor inside the rotor structure reduces the axial length and overall volume of the electric machine for motor vehicles.

A motor controller restricts power source current in interior permanent magnet motors using torque current conversion.

A motor driving apparatus calculates current and frequency instructions directly from speed values to generate desired torque output.

Injecting a perturbation signal into the flux magnitude compensates for environmental changes and maintains efficiency while minimizing torque ripple.

Estimates position waveform errors and adjusts current regulator virtual resistance to reduce DC-link voltage oscillations caused by resolver imperfections.

A phase detector circuit senses motor phase current sign transitions to calculate precise phase shift compensation for inverter control.

Kickback voltage detection modules monitor coil terminals and trigger selective MOSFET switching when voltages exceed thresholds, preventing IC latch-up.

A motor controller adjusts direct-axis current to weaken the electromagnetic field and increase speed.

A synchronous motor control apparatus calculates d-phase and q-phase current limit candidate values to manage torque and flux commands.

Aligning the rotor with d-axis current during stop phase improves initial position estimation accuracy and motor responsiveness.

A permanent magnet synchronous motor control method uses d-q axis feedforward compensation to stabilize speed.

Integrating a network interface circuit into the motor controller enables remote debugging and eliminates manual on-site maintenance.

A linear motor door actuator controller varies current amplitude to maintain an optimum phase shift between magnets and coils.

A motor control device estimates rotor magnetic pole position using multi-angle inductive sensing and current component integration.

A voice coil motor displacement sensor applies an alternating measurement signal to determine impedance and estimate displacement.

A phase control loop regulates electric generator rotational speed using amplitude and phase difference signals to generate a correction signal.

A control apparatus adjusts q-axis current commands to enhance torque linearity in reluctance synchronous motors.

Controller adjusts phase winding energization angle based on measured DC link voltage.

A variable switching determination value adjusts control modes based on inverter states to prevent chattering.

Notch filters and a phase delay filter remove steep power spectra from the torque control system to prevent noisy sounds.

Controller monitors phase current and speed to detect permanent magnet synchronous motor faults without costly position sensors.

A controller executes deceleration control by decreasing current frequency to the rotor d-axis during motor startup.

Controller transforms rotor position signals to rotating reference frames, filters them, and converts back to stationary frames.

An AC rotary machine controller uses an adaptive observer to estimate magnetic flux phase and current vectors from voltage and current signals.

A logic circuit sequences voltage vectors across stator coils to generate induced voltages for position tracking.

A rotary machine control device adjusts phase differences between winding groups to manage electromagnetic noise and torque output.