Propulsion Using Dc Motors TRIZ Cases

Detachable power and control connectors let one drive unit be replaced without stopping the full system, while sequenced disconnection limits arcing and wear.

High-voltage DC over a tether cuts cable losses and heat, while a universal aerial supply adapts power to different small UAV classes.

Placing the main transformer above the bogie frees passenger space, shortens power lines, and improves weight balance in double-deck rail carriages.

By placing the drive motor on the traveling wheel axis and using track notches, this case cuts traveling section height without wall interference.

Automatic grid-voltage detection switches the traction converter between AC and DC modes to prevent manual errors and circuit damage.

Motor-driven feed arm adjustment tracks upper carriage rotation to prevent energy line overstretch, tearing, and friction in construction machines.

Flexing insulating leaf springs shake off salty conductive deposits, preserving pantograph insulation resistance and winter power pickup.

A common tether interface and onboard DC-DC conversion let one ground station power different UAVs with lower losses and less equipment.

A DC bus interface lets industrial electric vehicles draw power while moving or stopped, cutting recharge downtime and battery oversizing.

A boost DC-DC converter absorbs DC catenary overvoltage, removing extra protection parts and shrinking railway traction power supplies.

A bidirectional charger links the traction battery and on-board network to cut converter losses, simplify retrofits, and extend rail vehicle range.

A battery tender lets existing locomotives switch between pantograph and onboard power, enabling catenary-free operation with less retrofit complexity.

A comparator-based DC/DC ground wire circuit detects poor contact or disconnection and limits converter output to prevent harness overheating.

A control system shifts portable power supplies to machines that need them, extending electric worksite range beyond tether limits.

Rail voltage monitoring disconnects drive motor power below a risk threshold, preventing unintended storage-retrieval unit movement.

A separate DC on-board supply keeps converter coolant pumps running during emergency braking, avoiding AC interference and semiconductor overheating.

A dedicated DC onboard network keeps coolant pumps running despite three-phase interference, preventing converter overheating during emergency braking.

Charge transfer unit adjusts voltage between input and load sides, enabling standardized power electronics across varying national mains voltages.

A circuit breaker controller adjusts interruption timing based on train speed to ensure reliable power isolation before dead sections.

A compact switching device uses an integrated insulator to reduce terminal spacing and electromagnetic energy requirements.

Integrates overvoltage protection with power switching elements to minimize conductor bar length and reduce wiring inductance.

Periodic switching between high and low power modes reduces energy consumption while maintaining accurate pantograph-catenary electric arc simulation.

A battery device adjusts charging and discharging voltages based on line voltage and state of charge to optimize energy flow in DC rail systems.

A vehicle charging system power source circuit supplies energy to the control section using multiple internal and external batteries.

A traction transformer control cabinet adjusts cooling fan frequency using real-time train speed and oil temperature data.

A rail vehicle transformer secondary winding stabilizes traction converter operation through controlled current injection from a braking chopper.

Medium-frequency transformers reduce input transformer weight in rail vehicles while supporting operation on varying AC and DC voltage networks.

A power conversion device generates PWM signals using a carrier wave with periodic time ratio changes to suppress harmonic currents.

A regeneration inverter device manages energy flow between electric car lines and an electric double layer capacitor storage medium.

Series resonant converters on the AC bus enable bidirectional power flow, maintaining emergency traction supply during external grid failures.

Electric machine with transformer windings configured for dual AC and DC operation modes, eliminating separate throttles to reduce weight and size.

Integrating capacitors and connections within a plate cavity reduces impedance while protecting components from damage.

A universal rail power supply unit converts electrical energy to support track construction machines across multiple voltage systems.

A variable voltage source manages load variations in DC rail systems by controlling current flow through an interconnection reactor.

A controller generates manipulated current to suppress interference currents in DC vehicle main circuits.

Detects overhead wire voltage phase and reversely excites the main transformer primary side to prevent excitation inrush currents during pantograph connection.

Pre-charging unit with electronic switches manages capacitor voltage across inductors before main coupling.

A superconducting cable in a railway pantograph transitions to high resistance when direct current intensity exceeds a critical threshold.

A rail vehicle transformer links the energy storage device to traction equipment, enabling efficient power transfer.

A vehicle control device calculates voltage differences between detectors to identify sensor malfunctions without dedicated circuits.

FPGA-based controller divides arithmetic processing into parallel blocks to reduce return harmonics caused by asynchronous data exchange.