AC Motor Control TRIZ Cases

A motor controller adjusts floating phase time intervals to drive three-phase motors with optimized pulse width modulation.

Adjusting motor flux based on load minimizes waste heat and acoustic noise generation.

Segmented primary coils activate in timed resonance with an LC circuit to produce rotational torque while reducing heat generation from continuous current flow.

A motor driving device calculates rotational speed and magnetic pole electrical angle using counter electromotive voltage arithmetic sections.

Replacing mechanical guides with a floating output ring and permanent magnets reduces mechanism weight while maintaining stable movement.

A power conversion apparatus manages idle phase energy through a discharge resistor connected to the capacitor.

A four motor direct driving system connects electric motors to vehicle axles for independent wheel control.

Segmented control wirings with balance resistors suppress parasitic resonance in parallel arm switches during faults.

A motor control system generates parameter measurements using position sensor signals and electrical parameters for robust commutation.

A single multiplexed converter measures currents with temporal anticipation and delay to estimate values via arithmetic mean.

A modular multilevel converter adjusts input voltage as a function of angular frequency to optimize sub-module capacitor energy distribution.

An AC-AC power converter uses motor inertia to stabilize DC link voltage without large electrolytic capacitors.

An electric motor control system redirects phase currents via switching devices to distribute high dv/dt voltage spikes, extending winding insulation life.

An electric motor drive device manages smoothing capacitor voltage using a discharge circuit and phase short-circuit control unit.

Advancing stator coil energization timing reduces audible noise while the hybrid converter recycles inductive energy to lower peak power demand.

A motor control device adjusts dead time compensation voltage based on fundamental wave phase to reduce output voltage fluctuations.

Segmented propulsion system drives main and stern propellers via independent electric motors to optimize power distribution.

Angular and star connected stator coils reduce harmonic magnetic potentials, lowering temperature rise and vibration in compressors.

A motor control circuit adjusts drive cycles based on rotor position feedback to maintain constant speed in electronic timepieces.

Conductive shields redirect electric fields from phase windings into the stator, preventing voltage discharge across bearings that damages motor components.

Capacitors absorb drain-source voltage surges to prevent gate-source fluctuations and self-turn-on in SiC half-bridges.

Synchronizing inverter output frequency and phase with the grid eliminates complex speed sensors, reducing energy consumption while maintaining safety.

Monitor coil temperature and resistance during startup to detect faults before vehicle operation, preventing travel-related instability.

A power converter computes offset voltages to correct three-phase commands and reduce output distortion.

Assistant circuitry activates a second controller via counter electromotive force generated by an uncontrolled motor rotation.

A control unit adjusts hydraulic pump delivery capacity based on swing electric motor speed and lever operation.

Low-capacity film capacitors replace bulky electrolytics in a 3-level inverter, with damping and offset voltage control maintaining stability.

Ceramic frame encloses SiC power devices to suppress shear stress from thermal expansion mismatch.

A motor driver applies pulse voltages to coil pairs for sensorless rotor position detection.

A DC to AC converter integrates an energy recovery module with voltage and current modulation circuits.

A six-step flux controller generates a flux modifier to regulate electric machine flux in the speed-load region.

A composite terminal member with an intermediate coefficient of linear expansion reduces thermal stress on bonding members in double-sided SiC devices.

Dynamic control logic manages parallel DC bus connections between frequency converters to optimize energy sharing.

Asymmetric current command values applied to a dual-system motor eliminate the steering handle center dead band, ensuring proportional torque generation.

A power conversion device calculates phase current ratios to determine ground fault sites in motors and cables.

Resonant capacitor lowers high impedance to facilitate excitation current flow, reducing torque ripple in field winding rotating electric machines.

Segmented inverter modules divert fault current and reconfigure the power bus to maintain reduced-capacity operation when motor controller faults occur.

A PWM drive control method uses hysteresis clamping to minimize unnecessary switching transitions in multiple phase systems.

A power conversion control device calculates pre-switching and post-switching pulse times to determine carrier wave switching enablement.

Feedforward control cancels unbalanced back electromotive forces from partial magnet alignment, reducing vibration during high-speed lithography stage movement.

Differing lateral forces on both sides of the transport unit enable steering without auxiliary coils, reducing device complexity and wear.

A controller calculates d-axis and q-axis voltage commands using magnetic flux data for an induction machine in electric vehicles.

A motor control method measures position sensor transition times to calculate commutation error fractions and adjust timing.

Fuel cell integration with reconfigurable electric motors and conversion units minimizes weight by eliminating dedicated components during aircraft emergencies.

A hybrid vehicle controller manages two electrical storage devices to supply external power without depleting driving energy reserves.

A semiconductor device uses a second main electrode to surround the control gate pad for efficient thermal management.

Monitoring temporal amplitude fluctuations via induced voltage allows early abnormality detection, avoiding false triggers from component variations.

A parallel inverter control method detects and compensates synchronization errors to stabilize output signals.

Multiple generator modules between rotor and stator eliminate mechanical gearboxes, allowing efficient power generation across varying fluid stream conditions.