Generation Protection Through Control TRIZ Cases
- Generator-Controlled Induction Motor Startup and Speed Regulation
Closed-loop generator voltage control limits induction motor inrush current at startup and improves speed stability under load.
- Electrically Heated Thermal Storage for Gas Turbine Overspeed Control
When grid load is lost, generator output is diverted to electrically heated thermal storage to absorb power and enable controlled gas turbine shutdown.
- Pseudo-Synchronous Power Supply Control for Grid Accident Step-Out Prevention
During grid voltage accidents, fixed command frequency control prevents pseudo-synchronous generator step-out and keeps output voltage synchronized.
- Generator DC Link Damping for Drive Shaft Torsional Oscillation
A feedforward DC link control uses speed ripple sensing to damp generator drive shaft torsional oscillations with less weight and power loss.
- Virtual Synchronous Generator Current Limiting via Virtual Impedance
Virtual impedance limits fault overcurrent in grid-forming power units, reducing converter damage, tripping, and component wear.
- Brake Resistor Assembly for Turboexpander Rotor Shutdown Control
A matched brake resistor dissipates rotor energy during turboexpander generator faults, enabling safe shutdown while recovering gas expansion power.
- Generator Output Circuit Control for Fast Overload Prevention
Real-time voltage and current feedback lets one generator output circuit self-regulate power, preventing overload without inter-circuit communication.
- Virtual Synchronous Generator Current Limiting With Virtual Impedance
Virtual impedance limits overcurrent in grid-forming power units by slowing virtual generator acceleration and protecting converter components.
- Generator Voltage Regulator With Dynamic V/F Curve Selection
Real-time resistance and voltage sensing let the regulator switch V/F curves to stabilize generator speed and output voltage under changing loads.
- Virtual Synchronous Generator Control Under Grid Overcurrent
A virtual impedance scheme limits converter current during grid voltage drops, protecting switching transistors while maintaining grid-forming behavior.
- Welding-Voltage Feedback for Stable Auxiliary Power Output
Welding voltage feedback regulates auxiliary power under load, avoiding high-voltage isolation while maintaining stable output and overvoltage protection.
- Feedforward Generator Damping via DC Link Voltage Adjustment
A ripple sensor and feedforward circuit adjust generator DC link voltage in phase with shaft oscillations to cut torsional vibration and power loss.
- Vehicle Motor Shaft Voltage Suppression via Field Weakening
Field weakening control suppresses shaft voltage below bearing withstand limits, preventing electrolytic corrosion and enhancing durability.
- AVR Field Voltage Monitoring for Generator Overvoltage Protection
Automatic voltage regulator detects generator field voltage via auxiliary gate-pulse regulator to control excitation current.
- Overvoltage Protection in Aircraft Generator Control Units
A dedicated overvoltage prevention unit monitors generator parameters to selectively open the conduction path, preventing overvoltage during GCU failure.
- Electric Power Plant Controller Adaptation for Oscillation Suppression
Automatic adaptation of band-stop filters to detected oscillation frequencies eliminates manual tuning requirements during installation.