Electric Motor Control TRIZ Cases

A motor controller uses mode select circuits to switch between internal and external protection modes for fault handling.

A generator switches to emergency mode with reduced excitation current upon cooling device failure.

Dynamic motor speed target values balance rapid fluid pressure buildup against abrupt operation noise changes in vehicle braking systems.

Stationary coils detect inductance changes to determine rough position, enabling accurate initial positioning with limited-range sensors.

A vehicle battery system configures energy modules and power switches to supply N-phase electric machines based on estimated load consumption.

A diagnostic apparatus acquires time series force data to identify drive object irregularities through dynamic oscillation threshold setting.

A switching control unit compares voltage command values with asymmetric carriers to reduce switching times.

Segmenting the electrical system with a dedicated alternator isolates emissions components from the battery, eliminating special warranty requirements.

A brake control device executes positional propeller shaft movement to accelerate electric braking force generation.

Electronic parking brake actuator adjusts target current via motor driver to compensate for voltage fluctuations and ensure consistent braking force.

A motor driven appliance segments detected abnormalities into clearable and persistent types to execute specific processing routines.

Closed-loop control of motor winding temperature via matrix converters prevents condensation and reduces energy waste compared to fixed heaters.

A series switching element regulates capacitor charging timing in electric working machines.

A diagnostic device detects sidebands in driving current to identify mechanical and copper losses.

A motor control apparatus integrates protection logic into a microprocessor to generate switching signals for three-phase bridge circuits.

A rotary connector monitors stator and rotor temperatures to control power supply circuits.

A control device estimates total flow rate using generator characteristics and a flow resistance characteristic line to manage fluid system operation.

A semiconductor device detects back electromotive force to determine rotor position for stable motor startup.

A multiphase spindle motor uses sequential transistor switching to rectify back electromotive forces and charge a hold capacitor.

Magnetic sensors measure stator fields outside the housing to determine operational state variables without structural modifications.

A bridge circuit detects motor current using transistor on-resistance instead of an external sense resistor, reducing power consumption and part count.

A control device uses inter-CPU communication status and power supply voltage to determine processor states during reset operations.

Converter controllers share digital shaft information through communication buses to ensure system reliability despite resolver-to-digital converter failures.

A sheet conveying device restricts motor drive using independent time-based determination processing portions.

A controller limits turning electric motor output during state transitions in hybrid work machines to maintain consistent speed profiles.

All-phase short circuit control prevents DC voltage rises and torque spikes during shutdown by managing induced currents.

Protection circuit detects capacitor short circuits and generates action signals to divert energy from the DC link.

A brushless motor control system varies winding conduction periods using a periodic waveform to shape current flow.

Stator current and voltage measurements calculate slip to detect synchronization thresholds, resolving inefficient induction-to-synchronous mode transitions.

An inverter generator adjusts output voltage based on detected DC and AC voltages to correct the PWM signal for stable power delivery.

Dual phase windings detect faults and clamp the motor rotor, preventing unpredictable steering when a microcontroller fails.

A signal adjusting device changes termination resistor values electronically to match position detector types.

A current switch uses a microcontroller to sample frequency and current for real-time self-calibration.

A blockage detector calculates a power quotient from two rotating field speeds to identify motor faults without speed sensors.

Direct on-off commutation routine replaces PWM switching to eliminate high-frequency losses while maintaining indefinite on-time for high-side switches.

A control device adjusts impeller rotational speed by monitoring motor load current to maintain operational stability.

A multi-phase rectifier adjusts individual phase currents to equalize temperature across switching elements.

A generator regulator monitors DC voltage to prevent overvoltage in vehicle power supplies.

An inverter switch-off device autonomously closes current valves to secure an electric machine.

A motor control system estimates DC link current using shunt resistor measurements and phase current summation for precise field regulation.

A motor control system generates voltage commands using dynamic inverse model equations to manage rotational velocity and torque.

A load torque estimation apparatus updates a motor model's mechanical time constant based on actual rotational speed to improve accuracy.

An electronically commutated fan system uses a conversion module and inverter unit to process input power sources for rotational speed control.

A manual mode buffer with a lag filter processes driving signals to stabilize PID controller transitions.

A generator-based braking control method adjusts electric machine power using accelerator pedal position for seamless propulsion management.

A motor management relay uses an optical sensor to detect electro-optical radiation from electrical arcs.

A motor control device adjusts inverter output to reduce input current harmonics without large capacitors.

A bidirectional DC/AC converter regulates power flow between a rectifier and an electric motor to optimize energy storage.

A motor control device limits d-axis and q-axis voltage instruction values during regenerative operation to manage power source current.

A prohibition circuit prevents the locking protection circuit from stopping drive current supply during low power voltage conditions.