Ac-Dc Conversion TRIZ Cases

A multiphase distributed energy storage system manages power delivery across electrical phases using bidirectional converters.

Periodic wake-up pulses prevent extended inactivity that causes latch-up, ensuring reliable voltage regulation under varying load conditions.

Segmenting amplitude and frequency control reduces torque ripple and power losses at low motor speeds.

Multiple synchronous reference frames provide infinite gain at specific frequencies, attenuating harmonic distortion and voltage unbalance.

Electronic switching replaces mechanical taps to eliminate arcs and wear while enabling continuous voltage regulation.

A control circuit corrects PWM signal phase based on input voltage and current detection to synchronize with AC zero-crossing.

Segmenting the bypass switch into parallel elements reduces operation time, preventing overvoltage and overcurrent damage while lowering component costs.

A hybrid multilevel power converter uses silicon carbide and silicon devices to reduce manufacturing costs.

Solid-state IGBT switching eliminates heavy electromechanical relays, reducing mass while maintaining vibration-resistant damping capacity.

Snubber thyristors absorb rapid voltage changes during faults, isolating faulty modules while protecting semiconductor switches from overvoltage damage.

Gate voltage control circuit monitors input and rectified voltage difference to activate the transistor before reverse current occurs, preventing power loss.

Segmented converter legs regulate line parameters to zero during faults, enabling continuous HVDC operation while minimizing component count.

Decoupling subsystems with separate prime movers eliminates complex mechanical linkages in voltage regulator tap changers.

A voltage converter subtracts an opposite-phase reference signal from the output to cancel ripple components.

Full-wave rectification with MOSFETs transmits data via power lines, eliminating separate wiring and reducing heat generation.

Model predictive control compensates for communication delays and packet losses in modular multi-level converters by predicting future states.

A frequency setting circuit pre-sets PWM frequency higher than minimum overload levels during startup to ensure stable power delivery.

A power supply circuit adjusts boosting capability to increase output voltage rising speed.

Inductances in switching cells enable continuous current flow, reducing unwanted circulating currents and component losses.

Auxiliary commutated silicon-controlled rectifier circuit applies reverse bias voltage to turn off SCRs using a dedicated commutation module.

Change-over switches in a reconfigurable MMC sub-module unit enable rapid topology conversion, reducing construction costs for dynamic simulation experiments.

A switching power supply apparatus generates inverted and doubled voltages using a single flying capacitor and time-division driver circuit.

A two-layer predictive controller manages bidirectional inductive power transfer by generating primary, secondary, and differential phase shifts.

High-impedance voltage dividers create a virtual neutral point for accurate zero crossing detection while minimizing current consumption in three-phase motors.

Decoupling three phase inverter control reduces circulating currents and simplifies current sharing by treating phases as independent single phase circuits.

A charge pump system dynamically adjusts active boosting units to generate required output voltages.

A charge pump circuit uses dynamic switching to manage bulk terminal voltages and maintain stable operation.

Segmented upper and lower arm circuits with an isolated converter regulate output voltage, reducing power loss in high voltage systems.

Dynamic body voltage switching eliminates the body effect in a two-phase charge pump, reducing conduction voltage requirements.

A transformerless power circuit uses capacitor drop technology and MOSFETs to regulate voltage levels efficiently.

Receiving-end MMC control method actively decreases DC voltage to suppress overvoltages during AC system faults.

Series-connected power transfer modules tap DC energy to AC lines, balancing capacitor voltages and mitigating harmonics.

Adjustable transformer ratio via switchable inductors reduces standby energy losses while maintaining proper auxiliary voltage levels.

Modular voltage converting units coupled via inter-phase transformers enable phase shifting and higher effective switching frequencies.

Ramp average common-mode voltage to zero during start-up to prevent inductor saturation and current peaks.

A five-level inverter balances clamping capacitor voltages through controlled switch transistor conduction combinations.

Detecting circuit forces switch elements on to route current through a fuse, preventing reverse voltage damage without adding protective diodes.

An on-chip current sense system uses an operational transconductance amplifier to generate a linear sense current.

Model predictive control selects switching matrices via multi-objective functions to reduce switching frequency and balance DC bus voltage.

Integrated converter modules share cabling connections within a single switchgear frame, eliminating separate UPS infrastructure and reducing thermal losses.

A power supply circuit system adjusts oscillation frequency to maintain optimal current consumption levels.

A multilevel converter circuit reduces semiconductor switch count using arm pairs and capacitors to generate multiple voltage levels.

Merging separate output terminals into one block reduces inverter size while parameter-based control maintains duty ratio for reliable signal transmission.

An active clamp circuit ensures continuous current flow in a capacitor-drop power supply, preventing LED flickering in neutral-less lighting configurations.

A switching power supply starting circuit supplies constant current to stabilize the control circuit during initial operation.

Dynamic input voltage detection and feedback control maintain consistent output across varying welding conditions.

Short-circuiting the rectifier input limits output voltage while synchronizing switch removal with phase current zero-crossings to prevent transient damage.

A compensation control circuit adjusts a temperature protection point dynamically based on input voltage levels to maintain accurate thermal monitoring.