Propulsion Using Dc Motors TRIZ Cases
- Drive Unit Connector Sequencing for Hot-Swappable Replacement
Detachable power and control connectors let one drive unit be replaced without stopping the full system, while sequenced disconnection limits arcing and wear.
- Universal UAV Tether Power Supply With High-Voltage DC Feed
High-voltage DC over a tether cuts cable losses and heat, while a universal aerial supply adapts power to different small UAV classes.
- Roof-Mounted Main Transformer Layout for Double-Deck Rail Carriages
Placing the main transformer above the bogie frees passenger space, shortens power lines, and improves weight balance in double-deck rail carriages.
- Overhead Traveling Vehicle Wheel-Motor Layout for Lower Profile
By placing the drive motor on the traveling wheel axis and using track notches, this case cuts traveling section height without wall interference.
- Traction Converter Power Mode Detection for Safe AC/DC Switching
Automatic grid-voltage detection switches the traction converter between AC and DC modes to prevent manual errors and circuit damage.
- Active Feed Arm Control for Construction Machine Energy Lines
Motor-driven feed arm adjustment tracks upper carriage rotation to prevent energy line overstretch, tearing, and friction in construction machines.
- Pantograph Leaf Spring Vibration Against Conductive Deposits
Flexing insulating leaf springs shake off salty conductive deposits, preserving pantograph insulation resistance and winter power pickup.
- Universal UAV Tether Power Supply for Multi-Voltage Flight Endurance
A common tether interface and onboard DC-DC conversion let one ground station power different UAVs with lower losses and less equipment.
- Industrial EV Traction Power Interface for Charging While Moving
A DC bus interface lets industrial electric vehicles draw power while moving or stopped, cutting recharge downtime and battery oversizing.
- Railway Traction Power Supply With Boost Converter Overvoltage Absorption
A boost DC-DC converter absorbs DC catenary overvoltage, removing extra protection parts and shrinking railway traction power supplies.
- Rail Vehicle Traction Battery Supply Using a Bidirectional Charger
A bidirectional charger links the traction battery and on-board network to cut converter losses, simplify retrofits, and extend rail vehicle range.
- Battery Tender Traction Assembly for Catenary-Free Locomotive Retrofit
A battery tender lets existing locomotives switch between pantograph and onboard power, enabling catenary-free operation with less retrofit complexity.
- DC/DC Ground Wire Detection Circuit for Poor Contact Protection
A comparator-based DC/DC ground wire circuit detects poor contact or disconnection and limits converter output to prevent harness overheating.
- Worksite Power Control With Relocatable Portable Supply Units
A control system shifts portable power supplies to machines that need them, extending electric worksite range beyond tether limits.
- Storage-Retrieval Unit Voltage Cutoff for Risk-State Motion Prevention
Rail voltage monitoring disconnects drive motor power below a risk threshold, preventing unintended storage-retrieval unit movement.
- Rail Vehicle Coolant Pump Power Isolation During Emergency Braking
A separate DC on-board supply keeps converter coolant pumps running during emergency braking, avoiding AC interference and semiconductor overheating.
- Rail Vehicle Coolant Pump Supply on a Separate DC Network
A dedicated DC onboard network keeps coolant pumps running despite three-phase interference, preventing converter overheating during emergency braking.
- Rail Vehicle Circuit Voltage Conversion Unit
Charge transfer unit adjusts voltage between input and load sides, enabling standardized power electronics across varying national mains voltages.