Electric Power TRIZ Cases
- UPS Bus Capacitor Precharge for Safe Grid Reconnection
A boosted bus-capacitor precharge cuts AC-to-bus voltage mismatch, protecting switch circuits and enabling reliable UPS startup.
- DC Power Plant Battery Recharge Control for Lead-Acid Strings
PI-based current and voltage shaping keeps lead-acid battery strings within recharge limits, avoiding overcharge, heat, and uneven charging.
- Implantable Backup Capacitor Switching for Inrush Current Control
Staggered switching of backup capacitor groups cuts implantable device inrush current peaks and helps prevent resets, data loss, and power overload.
- Parallel Battery Stack Control for State-of-Charge Balancing
Coordinated local and global control lets parallel electrochemical stacks balance state of charge while maintaining battery power and safety.
- Buck-Boost Charger Current Limit Loop for Sense Resistor Failure
A backup discharge-current sensing loop limits output current when the primary sense resistor shorts, protecting charger circuitry from surge damage.
- Battery Charger Control for Long-Term Unattended Maintenance
Adaptive battery identification, feedback control, and maintenance charging improve unattended long-term charging safety, efficiency, and battery life.
- Wireless Charger Over-Voltage Circuit for Stable In-Band Communication
An over-voltage protection circuit regulates rectifier and regulator outputs to spread excess power and preserve wireless charger communication.
- Peer Power Sharing for Low-Battery Electronic Devices
Nearby compatible devices are detected in real time to request and negotiate power sharing, reducing charging delays and dependence on stations.
- Multi-Cell Battery Reconfiguration Using Protection Switches
Primary battery protection switches are reused to reconfigure cells in series, parallel, or isolation, cutting switch count while improving charging and cell health.
- Partial-Power DC-DC Battery Pack Layout for Lower Conversion Loss
Most charge and discharge power bypasses the DC-DC converter, cutting conversion loss while preserving voltage matching and safe battery pack operation.
- Alternating Power Cell Charging for Continuous Off-Grid AC Supply
Two power cells alternate through a motor-driven generator to sustain off-grid AC power without a closed-loop self-recharge scheme.