Generation Protection Through Control TRIZ Cases

Closed-loop generator voltage control limits induction motor inrush current at startup and improves speed stability under load.

When grid load is lost, generator output is diverted to electrically heated thermal storage to absorb power and enable controlled gas turbine shutdown.

During grid voltage accidents, fixed command frequency control prevents pseudo-synchronous generator step-out and keeps output voltage synchronized.

A feedforward DC link control uses speed ripple sensing to damp generator drive shaft torsional oscillations with less weight and power loss.

Virtual impedance limits fault overcurrent in grid-forming power units, reducing converter damage, tripping, and component wear.

A matched brake resistor dissipates rotor energy during turboexpander generator faults, enabling safe shutdown while recovering gas expansion power.

Real-time voltage and current feedback lets one generator output circuit self-regulate power, preventing overload without inter-circuit communication.

Virtual impedance limits overcurrent in grid-forming power units by slowing virtual generator acceleration and protecting converter components.

Real-time resistance and voltage sensing let the regulator switch V/F curves to stabilize generator speed and output voltage under changing loads.

A virtual impedance scheme limits converter current during grid voltage drops, protecting switching transistors while maintaining grid-forming behavior.

Welding voltage feedback regulates auxiliary power under load, avoiding high-voltage isolation while maintaining stable output and overvoltage protection.

A ripple sensor and feedforward circuit adjust generator DC link voltage in phase with shaft oscillations to cut torsional vibration and power loss.

Field weakening control suppresses shaft voltage below bearing withstand limits, preventing electrolytic corrosion and enhancing durability.

Automatic voltage regulator detects generator field voltage via auxiliary gate-pulse regulator to control excitation current.

A dedicated overvoltage prevention unit monitors generator parameters to selectively open the conduction path, preventing overvoltage during GCU failure.

Automatic adaptation of band-stop filters to detected oscillation frequencies eliminates manual tuning requirements during installation.

Reconfigurable stator windings maintain nominal voltage during cooling failures, extending emergency operation without additional generators.

Dual stator windings in an asynchronous starter-generator enable independent motor starting and generator power supply via a single inverter.

Variable resistance load bank maintains minimum generator loading to prevent wet stacking and soot buildup.

A rotating rectifier protection circuit isolates the exciter winding from voltage increases during shorted diode events.

Measurement system detects malfunctions and controller interrupts energy output to protect generator components from damage.

A brake controller monitors turbogenerator speed and activates a braking circuit to constrain acceleration during grid events.

A detection apparatus samples alternator field winding voltage to identify rectifier diode short faults using frequency analysis.

Dynamic cold gas temperature control matches cooling liquid flow to generator load states, reducing thermomechanical stresses from thermal expansion variations.

A generator controller selectively activates load interruption devices to isolate faults while maintaining power to critical loads.

A permanent magnet machine drive shaft incorporates a shear section that breaks under excessive torque to isolate the rotor from the prime mover.

Dynamic boundary curves derived from real-time impedance and voltage data enable accurate protection against operational hazards in synchronous generators.

A voltage buildup detection unit measures the rate of voltage rise across a DC rectifier section to identify faulty rotating diodes in aircraft generators.

Controller compares diagnostic values against expected operating parameters to identify short circuit conditions, reducing downtime and maintenance costs.

Coordinated excitation control and transformer tap selection reduce fault currents, enabling network expansion without switchgear upgrades.

Secondary stator windings offset synchronous reactance effects during load changes, preventing over-voltage faults in aircraft electrical systems.

A generator protection system monitors speed and voltage deviations from normal droop operation to identify unhealthy units.

Evaluation device assesses operating parameter gradients to identify generator load shedding events accurately.

A resistive braking system redirects generator current to a parallel resistor during grid events.

Shared dissipating units prevent overload during high-power events, maintaining system operation and prolonging component lifespan.

A TRIAC and MOSFET circuit grounds an alternator magneto to stop engine rotation when overvoltage is detected.

A chopper control method monitors DC bus voltage and current to manage power converter operation.

A digital interface and regulator limit excitation current to prevent excessive counter-torque in vehicle alternators.

Segmented protection logic detects common mode currents and harmonic distortion in parallel converters, isolating faults to prevent equipment damage.

Third-harmonic voltage analysis detects wiring defects, blocking protection misoperation and preventing generator damage.

A detection circuit attenuates phase signals using a voltage divider and blocking capacitance to isolate rotation frequency.

A power generation controller manages field current to maintain vehicle AC generator voltage levels.

An electric damping module converts torsional oscillations into control signals, reducing mechanical fatigue in high-power drive trains.

Lateral coils apply opposing electromagnetic forces to counteract vibration from mass eccentricity, preventing rotor instability during acceleration.

A multi-winding stator monitoring method extracts second harmonic power components from individual winding sets to identify internal electrical faults.

A regulator injects simulated error voltages into phase signals to trigger existing anomaly detection circuits.

Proximity sensors measure instantaneous airgap distances between rotor poles and stator, preventing contact risks while maintaining high power output.

A controller adjusts generator output voltage to match available engine power.