Power Supply Lines TRIZ Cases
- DC Refrigeration Power Switching for Photovoltaic Cold-Mass Storage
See how a DC refrigeration control system switches between PV and backup sources, maximizing su
- DC Refrigeration Power Switching for PV and Non-PV Source Management
See how a DC refrigeration control system switches between PV and non-PV power, maximizing cool
- Traction Transformer Phase Switching to Suppress Magnetizing Inrush
Phase-angle timing of feeder switch-off and switch-on keeps traction transformer flux in range and suppresses inrush during neutral section passing.
- Thermal Line Fault Mapping for Complex Power Feeder Layouts
Maps estimated thermal line fault positions onto complex power feeder layouts, helping operators find short circuits or disconnections faster.
- Dual-Voltage Train Power Conversion With Landmark-Based Switching
Classified landmarks and mileage checks make AC/DC train power switching more reliable when landmark detection is uncertain.
- DC Breaker Interlock for Safe Maintenance Rail Bonding
An interlocked disconnector keeps the DC breaker closed during maintenance overcurrent, preserving rail bonding and preventing unsafe live rails.
- Contact Wire Hanger With Friction Damping for Pantograph Stability
A friction-damped contact wire hanger uses elastic frame parts and adjustable preload to reduce pantograph detachments and simplify upkeep.
- Rail Return Path Monitoring for Reliable Rail Fracture Detection
Current imbalance and voltage between parallel rails reveal fractures, enabling cost-effective detection and timely railway maintenance.
- Segmented Power Line Control for Variable-Speed Vehicle Movement
Timed movement and powering instructions synchronize segmented power activation with vehicle speed to maintain reliable delivery without speed limits.
- Railway Traction Substation Voltage Adjustment for Balanced Power Flow
Periodic power-exchange data updates substation no-load voltage settings to balance railway power distribution as traffic conditions change.
- MMC Phase-Leg Voltage Control During Grid Fault Recovery
Lowering each MMC phase-leg DC voltage during a grid fault creates overvoltage margin and helps avoid shutdown when voltage recovers.
- Overhead Line Dropper With Threshold-Activated Vibration Damping
A spring-impact dropper damps catenary wire vibrations only when needed, reducing wear, arcing, and temperature-sensitive maintenance.
- Bandgap Reference Circuit Using PTAT-CTAT Nonlinear Compensation
PTAT, CTAT, and compensation-current blocks hold reference voltage steady across temperature changes, reducing semiconductor malfunction risk.
- Current-Limiting Power Switch Startup Burst Control
A timed three-stage current limit lets power switches deliver startup bursts, then step down safely for reliable load power-up.
- Iterative Facility Exclusion for Optimal Power Line Positioning
A design device iteratively excludes facilities to determine optimal positioning configurations while maintaining train voltage requirements.
- Reference Voltage Generation Circuit with Start-Up Mechanism
A start-up circuit supplies current to an output node to directly increase a reference voltage, reducing transition time from non-operating to operating states.
- Railway Track Circuit Voltage Regulation for Thermal Dissipation
Dynamic voltage regulation minimizes thermal dissipation while maintaining reliable code detection in railway track circuits.