AC Motor Control TRIZ Cases

A power converter discharges intermediate capacitors through conductive semiconductor elements and parallel resistors.

Removing capacitors eliminates thick housing walls and complex pressure compensation systems for deep-sea converter reliability.

A conveyance device control unit cancels detection-to-reflection delays using continuous speed feedback to maintain precise motor operation.

High gain over voltage modulation improves power efficiency by resolving the trade-off between device complexity and fuel economy.

Integrating feedback acquisition, communication, and PWM output into one chip reduces device size and power consumption while increasing processing speed.

Harmonic components induce voltage in a pick-up coil, delivering power without interfering with fundamental propulsion.

A vibration generator control method applies alternating current at a starting frequency different from resonance to build initial momentum.

A motor controller adjusts inductance values to synchronize rotor and stator positions.

Potting material eliminates air gaps between sensors and busbars, improving isolation reliability.

Segmenting coils into two electrically independent groups resolves the contradiction between reliability and cost in vehicle steering systems.

A motor drive system uses a wireless transceiver for remote configuration and updates.

A controlled short-circuit mode protects electric machines by calculating optimal rotor positions to minimize current peaks during fault isolation.

Segmented half-bridge switches with individual fuses enable incremental melting via pulsed currents, preventing continuous short-circuit damage during flight.

Segmenting the power supply reduces switching losses in control components, improving overall fan efficiency.

A dual-sensor and dual-microprocessor system synchronizes steering actuation signals to suppress output variations caused by sensor discrepancies.

Segmented gate control applies distinct pulse timing to RC-IGBT terminals, suppressing energy loss while maintaining high switching speed.

A motor brake circuit routes electrical energy from an electric machine to a storage accumulator or heat resistor.

An automatic single-phase to three-phase converter circuit detects load demand and starts an idler motor.

Sinusoidal pulse width modulation selects redundant switching states to regulate flying capacitor voltages in multilevel converters.

A regeneration module integrates a voltage converter and switching circuit to control braking current flow.

Segmented electric motor drives with thyristor control lower fuel oil use and carbon oxide emissions while maintaining inert gas supply.

A control module applies a zero setpoint torque and predetermined gradient to manage rotary electric machine transitions.

A symmetric bridge circuit distributes thermal load across switching devices using bidirectional currents and center-aligned PWM.

A power inverter controller selects distinct voltage distortion compensation methods based on the modulation index to optimize switching performance.

A drive control device stores regenerative power in a capacitor connected to the DC bus of a vertical carrier machine.

A torque sensor measures reduction gear torsional deformation to correct electric motor output signals.

A motor control device monitors AC current to protect the initial charging unit from excessive inrush currents during capacitor charging.

Dynamic air gap adjustment resolves performance trade-offs from motor variability, ensuring efficient torque delivery throughout the entire speed range.

A motor driving control device executes short-circuit braking and rotor locking via a single position detector.

Converter system circulates stator current through generator windings to dissipate heat, preventing moisture condensation and voltage flashovers during startup.

A frequency ramping circuit gradually increases AC supply frequency to start motors without abrupt current spikes.

A sensorless BLDC motor controller uses non-commutation periods in PWM cycles to detect back EMF zero-crossing points for precise rotor position estimation.

An inverter-based control system alters current phase angles to form multiple pole pairs in induction motors.

Push-pull amplifiers generate amplified currents to reduce PMOS charge-discharge periods and switching loss.

Parallel stator windings connect to a dual converter system to manage electrical output in electric machines.

Direct phase current comparison replaces speed sensors to switch inverter modes safely, reducing complexity and preventing energy overcharge.

A motor control circuit synchronizes energization phases with rotor position signals to enable rapid motor activation.

A voltage applying circuit detects external terminal short circuits before current cut-off device closure.

A linear permanent magnet motor controller monitors electrical current to determine instantaneous force and detect pump-off conditions in ESP systems.

Asymmetric supply voltage surfaces reduce parasitic capacitance and electromagnetic interference from high-frequency switching in vehicle electrical assemblies.

A controller applies duty-cycle blanking to adjust PWM signal components and limit parasitic effects in electric motor systems.

Independent secondary controllers regulate voltage and current by varying connection time, enabling flexible power ratings without structural complexity.

A parallel flat plate bus bar electrically connects a capacitor to a power module, preventing electromagnetic noise from causing dielectric breakdown.

A stiff current power converter topology delivers controlled current to electric loads using capacitors and inductors.

A power conversion system stabilizes onboard electrical loads using a battery device connected to DC power lines.

A method calculates electrical angle offset by converting multi-phase motor voltages to a DQ reference frame during rotation.

VBattery transition detection activates the brake booster ECU during power loss, preventing damage from rapid piston movement.

A phase detector compares back-EMF signal levels to determine rotor position without extra sensors.

Variable duty ratio PWM control shortens negative voltage generation periods at input terminals, preventing control circuit malfunction in brushless motors.

Integrating choke devices and Y capacitors into the motor controller housing reduces device volume and eliminates manual installation of bulky external filters.