Generator Control Circuits TRIZ Cases
- Wound Rotor Induction Generator Frequency Conversion for Compact Wind Power
Power converters let a wound rotor induction generator run faster while delivering grid-frequency output with lower size, losses, and footprint.
- Per-Phase Grid-Forming Control for Unbalanced Fault Current Limiting
Per-phase balancing feedback lets a grid-forming converter limit overcurrent and maintain sinusoidal voltage and current during unbalanced faults.
- DFIG DC-Chopper Control for Fast Power Reduction and Rotor Overspeed
A DC-link chopper and coordinated pitch control dissipate excess rotor energy during fast power reduction, limiting overspeed and chopper runtime.
- Wind Turbine Converter PWM Frequency for Grid Fault Thermal Protection
Converter PWM frequency is lowered as current rises during grid faults, preventing semiconductor thermal overload while preserving turbine control.
- Doubly-Fed Electric Machine Control Near Synchronous Speed
Reactive power injection creates a compensable harmonic that cuts thermal stress near synchronous speed without reducing output.
- DFIM Drive Capacity Limits Under Real-Time Operating Conditions
Real-time limit calculation lets a DFIM drive handle transient and steady-state power demands without conservative lookup tables.
- Grid-Forming Inverter SSCI Damping With Virtual Resistance
A controller isolates sub-synchronous current components and adds virtual resistance to damp SSCI in grid-forming inverters.
- Power Converter Warm-Up Timing for Condensation-Safe Restart
Inactivity-based warm-up timing helps wind turbine power converters restart safely after condensation risk without manual inspection.
- Rotor-Side Converter Control for DFIG Grid Fault Ride-Through
A hybrid rotor-side converter controller switches modes during grid faults to regulate sequence currents, cut fault currents, and meet LVRT/HVRT.
- Grid-Forming VSM Control With Damper Winding Emulation
Power angle compensation damps wind turbine GFM oscillations, cutting drivetrain loads and helping fault ride-through grid-code compliance.
- DFIG Wind Turbine Frequency Modeling for Grid Inertia Support
A simplified DFIG transient model quantifies post-disturbance frequency support and spatial variation, enabling PI-based grid stabilization.
- Generator Bearing Health Detection Using Converter Common Mode Power
Converter phase voltage and current are used to track common mode power, exposing bearing insulation or ground brush degradation before EDM damage.
- DFIG UPS Rotor Excitation Control for Grid Disturbances
Rotor excitation from stored energy lets a DFIG UPS maintain load frequency, phase, and voltage quality during utility disturbances.
- Three-Level NPC Excitation Converter for Overcurrent Continuity
A three-level NPC excitation converter maintains voltage balance and reactive-power continuity during overcurrent events while reducing coil insulation stress.
- Selective Crowbar Protection in Multi-Level Power Converters
Selective crowbar activation diverts fault energy in multi-level power converters to stop failure propagation across converter phases.