AC Motor Control TRIZ Cases

Phase difference signals trigger periodic piezo adjustments, eliminating continuous actuator energy consumption during resonance tracking.

A calculation apparatus stores AD-converted current values after PWM signal rising edges to compute phase differences.

A bidirectional control method applies a signal with lower slope during central cycle parts to reduce mechanical shocks from rapid direction reversals.

Branching refrigerant flow channels cool motor element arrays, suppressing temperature gradients across phases.

Segmented triplet power modules manage thermal dissipation through ceramic plates while reducing electromagnetic interference via dielectric gel trays.

A voltage calculator estimates primary power line magnitude using tertiary voltage and output current data.

Calculating rotor position via speed integration eliminates expensive physical sensors while maintaining precise yarn tension and reducing torque ripple.

A wind turbine fault handling method groups faults by target protection objects to execute precise control actions.

This circuit resolves the trade-off between fixed hardware timing and flexible software control by allowing dynamic switching of analog-to-digital conversion order.

A drive device calculates command switching speed information to adjust gate currents for power converter switches.

A voice coil motor controller detects impedance variations to identify displacement asymmetry and applies compensation feedback.

A motor drive circuit aligns rotor position using duty control signals for reliable startup.

A bidirectional voice coil motor control system uses a shared analog core for PWM and linear modes, reducing output current errors during switching.

A pre-charging system manages capacitor voltage in electric motor inverters using controlled contactor switching.

A motor fault detection system injects high-frequency signals through a dedicated coupling circuit to analyze winding response.

Isolating bridges decouple the stator from the housing to absorb displacement waves and reduce torque ripple noise.

A rotary machine control device compares phase current sums against reference values to detect open phases.

String-shaped electrode projections create gaps for external electrodes, improving connectivity and reducing dielectric loss in miniaturized capacitors.

A motor driver circuit uses a shared inductor and charge storage element to enable bidirectional current flow through stator coil windings.

A resin-sealed mold bus bar aligns terminal main surfaces to improve assembly performance and reduce junction variations.

A control unit estimates rotor position to generate optimized PWM signals for motor driving.

Root mean square pulse gating simplifies drive circuitry, reducing component size and cost while maintaining high power output.

Back-EMF voltage measurements regulate DC motor speed in hopper spreaders, preventing material jamming during low-speed operation.

Asymmetric conductor thickness on an insulating substrate disperses external forces, reducing weight while maintaining junction strength.

A motor control device detects rotor position using current and induced voltage electrical angles.

A variable voltage converter adjusts the DC bus voltage range in hybrid electric vehicle drives using a switch, capacitor, and parallel inductor.

A controller modifies space vectors to suppress switching interference in motor drive circuits.

A central processing unit compares PWM duty and speed to preset maximums, dynamically adjusting control signals for brushless motors.

A block switching controller synchronizes motor energization with current zero crossings to minimize transient currents in linear motor systems.

Dynamic phase switching in electrical machines adjusts winding configurations to optimize power delivery across varying operational speeds.

A control method regulates phase voltage based on current profiles to align the rotor.

A rotary electric machine control device varies the carrier frequency based on rotational speed to shift sideband frequencies away from the audible range.

A motor controller detects current between a battery and inverter circuit to determine overload states without stopping rotation.

Bypasses field coil current from slipping DC traction motors to maintain torque in non-slipping units, preventing wheel slip and rail wear.

A power converter calculates DC-link voltage using voltmeters across anti-interference capacitors.

A transformer drive system transfers switching speed instructions to power switching elements without additional insulation means.

Interphase inductors distribute power to parallel converters, reducing common-mode noise while maintaining high power capability.

A motor drive circuit generates parameter voltage to determine a motor speed curve for stable rotation.

A stacked power module uses overlapping circuit elements to minimize inductive coupling.

A secondary variable frequency drive injects correction signals into the power pathway to optimize electric motor operation along the maximum torque per ampere curve.

Overmodulation increases inverter output voltage capability, reducing the number of required power cells and lowering device complexity.

A drive circuit couples a variable frequency drive to motor windings via a contactor controlled by a dedicated controller.

A silicon carbide MOSFET termination region with specific trench structures and p-type regions.

A linear motor controller applies switching compensation during armature coil transitions to stabilize mover movement.

A controller measures filter voltage to determine resonant frequency and adjusts rectifier parameters for active damping.

Segmented gate drive voltages reduce switching losses in hybrid powertrains by optimizing current slopes and minimizing semiconductor stress.

Voltage feedback control accelerates operating point determination for electric motors, replacing weeks of manual scanning with real-time automated adjustment.

A lens driver circuit applies dual current pulses to minimize oscillation and reduce stabilization time.

A semiconductor device generates N-phase pulse width modulation signals using dedicated hardware counters and a correction buffer to manage timing.