AC Motor Control TRIZ Cases

A semiconductor device uses a three-layer laminated resin structure to stabilize blocking voltage across the peripheral section.

Segmenting the control system into independent P, I, and limiter modules resolves grid stability issues caused by slow reaction times in wind farms.

A drive voltage controller transitions PWM states to gradually adjust phase current levels during motor startup and stop sequences.

Zero-crossing detection adjusts Hall sensor compensation to correct installation errors, reducing sinusoidal waveform distortions in motor current.

A reconfigurable battery system switches between series and parallel connections to optimize voltage levels.

A control system generates unique current reference profiles to optimize phase currents in switched reluctance machines.

A cooling bar extends from capacitor potting into a power module coolant channel to conduct heat away from power sources.

Differentiating resolver output signals eliminates hardware filter delays, enabling rapid phase delay detection without increasing calculation complexity.

PWM voltage excitation and recursive curve fitting estimate differential inductances while eliminating integration drift errors from voltage offsets.

A motor driving device adjusts feedback gain based on rotational speed signals to stabilize control.

A synchronous motor control apparatus detects rotor position using neutral point potential from Y-connected stator windings.

Adjusting control pulse timing balances power distribution among parallel converters while preventing current peaks and short-circuit risks.

Azimuthal flux closure in a toroidal switched reluctance machine minimizes leakage flux and total weight while maintaining high force generation efficiency.

A method estimates motor power consumption by generating compensation terminal voltages from error signals and detected phase currents.

A controller calculates basic voltage vectors proportional to the DC bus voltage to generate a stator field vector for AC motor torque control.

Merging the circuit board with the cooling member reduces thermal resistance layers between the semiconductor element and refrigerant.

A heteropolar inductor motor drives field windings via a rectifier bridge attached to phase windings, eliminating permanent magnets and separate controllers.

Control device segments regenerative power distribution across multiple inverters to maximize charging efficiency and reduce power loss during deceleration.

A redundant microcomputer motor control apparatus synchronizes shutdown sequences through inter-unit communication signals to maintain stable assist torque.

A power conversion device uses a ground conductor to connect the cooler and casing, reducing noise source current in high frequency bands.

A rotor position estimation system converts inverter output current samples into stationary reference frame values for precise motor control.

A control method calculates a synthetic variable from motor parameters to maintain constant levels during operation.

A shift range control circuit calculates phase lead correction values from rotation speed error to drive a switched reluctance motor.

Merging isolation transformers for power and signals eliminates dedicated components, reducing device size while maintaining electrical isolation.

A signal control device uses an AC conversion circuit to diagnose charge/discharge circuit malfunctions through digital value analysis.

A discharge control device consumes capacitor charges by generating voltage command values in an alpha-beta stationary coordinate system.

A voltage sensing unit measures potential differences between conductor patterns to detect bonding wire deterioration without increasing current flow.

Uneven current sharing enables early abnormality diagnosis of all converter circuits without significant decreases in conversion efficiency.

Segmented ground connections with rectifiers prevent overheating from cross-system current flow when open faults occur in electric motor controllers.

Variable loss horsepower calculation prevents prime mover stalling while maximizing electric motor output utilization.

A motor driver merges separate sensing paths into one unified path using a single sense transistor, reducing zero-crossing distortion in brushless DC motors.

Drive circuits transmit temperature and abnormality signals through shared magnetic couplers using logical OR operations to prioritize fault data.

Gate-source voltage control isolates faulty EPS inverter bridges, suppressing damping currents and heat without extra blocking components.

A power conversion device uses a control unit to generate PWM pulses based on output voltage vectors.

A power converter calculates intermediate circuit current using corrected switching functions derived from phase voltage and current measurements.

Series capacitors connect power terminals to a grounded board through hole, reducing common mode noise without increasing motor driving device size.

An intelligent battery cell integrates monitoring and switching circuits directly within the active material structure.

A motor control system generates out-of-volts signals to limit torque demand based on DC bus voltage.

A motor control circuit estimates rotor position using inductive sensing at multiple electrical angles.

A motor apparatus uses a hierarchical control system with one master module receiving encoder signals to manage multiple winding systems.

Replacing hydraulic cylinders with a linear motor reduces moving mass while eliminating gear mechanisms that cause jamming and structural complexity.

A frequency conversion module stabilizes elevator residual energy for direct water preheating in electric boilers.

Simulation-based sizing adjusts PID gains and motor parameters across motion profiles to lower energy usage and heat generation.

A quasi variable frequency motor controller applies discrete frequencies lower than the fundamental AC voltage to manage motor startup.

A linear motor compensates manufacturing deviations and wear by adjusting vibrator motion through feedback signals from a positioning sensor.

A machine learning device calculates reactive current commands for servo motors using reinforcement learning to optimize control signals.

Segmenting coils into opposing rotating fields cancels torque, enabling electrical energy conversion to heat without mechanical movement.

Segmented switching arms operate in overlapping subperiods to lower switching losses while maintaining operational reliability despite component failures.

A dedicated protection circuit with switches and resistors manages DC voltage spikes at inverter inputs without disrupting generator control.

A voltage converter adjusts its upper limit based on integrated power change to maintain safe operating conditions.