Ac-Dc Conversion Without Reversal TRIZ Cases
- Cascaded Resonant DC/DC Converter for HVDC Transmission
Segmented switching elements reduce transformer weight and size while enabling efficient voltage conversion in HVDC transmission.
- Dynamic Droop Control for HVDC Converter Voltage Regulation
Dynamic droop control switches between two droop rates in HVDC converters to limit excessive current and voltage during faults, preventing system conflicts.
- AC-DC Converter Control Angle Adjustment for Open-Line Test
A control mechanism adjusts the firing angle of switching elements in an AC-DC converter to manage voltage application during operation.
- GaN-Si Co-Packaged Driver Circuit for High-Voltage Signal Level Shifting
A co-packaged chip uses a gallium nitride circuit to transfer pulse signals between silicon driver dies.
- DC Power Supply Device with Automatic Voltage Detection and Switching
A DC power supply device detects connected tool voltage ratings and switches internal circuits to output the correct 18 V or 36 V level.
- Bridge Rectifier Switching Circuits Reduce Power Dissipation
Switching circuits with dedicated driving circuits replace diodes in bridge rectifiers to lower impedance and reduce power loss.
- Printer Power Adapter with Energy Storage for Peak Load Management
A printer power adapter uses an energy storage device to supply high current pulses during peak load conditions.
- Hybrid Rectifier Converter for Offshore Wind Frequency Regulation
Segmenting the unregulated rectifier from the self-commutated converter resolves weight versus reliability trade-offs in offshore AC networks.
- Phantom Voltage Detection Using Coupled Inductor for Blackout Sensing
A coupled inductor device converts neutral wire signals to phase-shifted voltages for blackout detection.
- Power Supply Device Optimizing Conversion Efficiency via Predictive Control
A power supply device adjusts conversion efficiency using new power prediction information to match load requirements.
- LED Luminaire Control Gear with Battery Backup for Emergency Lighting
Add-on control gear supplies emergency DC voltage via rechargeable battery during AC mains failure, eliminating ballast maintenance costs.
- Power Converter Switching Element Protection via Resonance Voltage Discharge
Control unit sets switching elements to ON state to discharge stored electric charge, preventing resonance voltage peaks from damaging components.
- HEMT Power Circuit Sigmoid Gate Driver for DC-DC Converter Loss Reduction
A power circuit uses a High Electron Mobility Transistor with a sigmoid gate driver to generate diode-like rectification characteristics.
- Variable Bias Power Module for Inrush Current Control
A variable bias supply unit adjusts voltage levels to manage DC/DC conversion stages in power modules.
- Reactor Arrangement With Segmented Magnetic Core
Segmenting the magnetic core into three legs provides closed flux paths for common-mode inductance without adding the weight of a five-leg structure.
- SiC-Si Hybrid Converter for Galvanic Isolation
Hybrid SiC and silicon converter topology enables high-frequency galvanic isolation, reducing transformer weight while maintaining power density.
- RFID Tag Power Management Circuit for Extended Read Range
Reflective impedance network prevents heat loss from shunt regulators, extending passive RFID tag read range.