Propulsion Using Ac Induction Motors TRIZ Cases
- Electric Assist Bicycle Control Using Acceleration-Based Power Adjustment
Acceleration and torque sensing let the bike adapt motor assist to slopes and headwinds without manual mode switching.
- Railway Traction Converter Using Brake Chopper Rectification
Shared brake chopper rectification lets a railway drive handle single-phase and three-phase power without extra rectifiers, saving space.
- Contactless Power Inter-Floor Transport for High-Rise Access
A contactless guide cable powers an aerial vehicle in one passage, enabling high-floor access, easier maintenance, and multiple boarding units.
- Overhead Contact Wire Layout for Automatic Pantograph Disconnection
Laterally diverging contact wires trigger controlled pantograph lowering and load-break switching to avoid arcing in restricted road sections.
- Shielded High-Voltage Wire Harness for In-Cabin Magnetic Field Control
A resin case and metallic cover enclose the high-voltage harness to suppress passenger magnetic-field exposure while simplifying shielding and fixation.
- Electric Work Machine Torque Mapping for Low-Speed Power Saving
A switchable two-map torque limit control cuts power use in electric work machines, especially when the motor runs at low speed.
- Train Traction Chopper Reuse for Low-Voltage Battery Propulsion
A dual-use chopper boosts low battery voltage to the DC link and also handles rheostatic braking, cutting train traction hardware.
- Dump Truck Power Switching Control for Overhead Line Transitions
Converter state switching limits current during battery and overhead line transitions, helping electric dump trucks maintain stable operation.
- Electric Motor Torque Map Switching for Low-Speed Power Saving
Dual torque maps cut battery power use at low motor speeds by lowering torque limits in energy-saving mode without sacrificing work efficiency.
- Fuel Cell Startup Voltage Control in Work Vehicle Converters
A chopper circuit and contactor limit fuel cell startup overvoltage so the converter stays within rated voltage and avoids higher-cost withstand design.
- Multi-Current Train Power Conversion for Four Grid Voltages
A modular converter keeps train output voltage stable across AC25kV, AC15kV, DC3000V, and DC1500V using reconfigurable inductance and rectification.
- Dual-Mode Rail Vehicle Self-Load Testing With Overhead Line Feedback
Excess diesel-generator power is split between a braking resistor and the overhead line, cutting heat loss and test cost in dual-mode rail vehicles.
- EV Battery Current Balancing via Temperature-Based Resistance Control
Temperature-driven resistor control balances current between EV battery groups, reducing uneven heating, output loss, and cell aging.
- Rail Vehicle Selector Switch Assembly for Seamless AC/DC Changeover
A common DC intermediate circuit keeps rail vehicle power continuous during fast AC/DC switching at system change points.
- Pantograph Separation Detection Using Dynamic Voltage Thresholds
Dynamic voltage-rate thresholds tied to converter output power improve pantograph separation detection and help prevent inrush current on recontact.
- Rail Vehicle Power Network With Decentralized High-Voltage Sections
Distributed high-voltage sections and local converters cut rail vehicle cable weight while maintaining reliable low-voltage power supply.
- Electric Truck Battery Pack Layout for Shorter High-Voltage Wiring
A battery pack placed between the drive unit and cab auxiliaries shortens high-voltage wiring, simplifying maintenance and improving protection.
- Neutral Point Clamped Choppers for Low-Loss Rail Battery Conversion
Two neutral point clamped choppers link a medium-voltage DC rail bus to low-voltage batteries with lower losses and overvoltage protection.
- Dual-Cab Auxiliary Inverter Start Circuit for Railway Operation
Hard-wired APS start and stop lines let drivers control auxiliary inverters from either cab, improving railway operating flexibility.
- Traction Power Converter Multi-Voltage Rail Vehicle
A traction power converter steps up or down voltage to maintain inverter output across varying catenary levels.