Ac-Dc Conversion Without Reversal TRIZ Cases

Input current control balances series capacitor voltages in an auxiliary commutated pole resonant converter without extra hardware or resistive loss.

Shorting the power-line coil below a power threshold suppresses capacitor resonance and cuts audible vibration in image forming power supplies.

Autonomous gate voltage adjustment in each parallel converter leg balances current sharing and reduces switch stress, heat, and power loss.

A series transformer stage with a transistor converter and DC-DC link cuts electrolysis current ripple and grid perturbations while lowering filter inductance.

A differential comparator aligns rectifier switching with the received RF waveform to cut power loss, delay, and load variation effects.

Adaptive frequency and duty control let one induction cooktop heat magnetic and non-magnetic pans while cutting SiC switching loss and heat.

Half-bridge modules and flying capacitors cut input current THD and cost while handling high three-phase input voltage.

A unified control circuit detects power failure and sequentially discharges interphase and main capacitors through two switching paths.

Calculated synchronous rectifier duty control improves multi-level AC/DC and DC/DC switch timing without zero-current detection circuits.

A drive circuit becomes operable within half an LC resonance cycle, turning on a semiconductor switch before startup overvoltage can damage the inverter.

A staged hybrid converter sequence manages capacitive and inductive reactive power to raise DC voltage safely in electrolyzer power supplies.

Series-connected transformer primaries and parallel secondary windings balance voltage and current for simpler, reliable DC power distribution.

Feedforward compensation using input ripple polarity suppresses overcontrol and output current ripple, enabling smaller filter circuits.

Threshold-based reverse-phase compensation stabilizes AC system voltage while avoiding capacitor voltage imbalance in MMC converters.

Orthogonal diode boards and alternating capacitor placement shrink high-voltage cascade space while preserving dielectric strength.

Independent half-bus voltage control meets load demand and overvoltage limits while reducing input current unbalance and harmonics.

High-frequency AC transmission replaces high-voltage DC, enabling thinner display power cables while maintaining stable voltage conversion.

Controlling phase differences between parallel self-commutated converters cuts electrolyzer voltage and current ripple without changing DC parallel supply.

A single-piece magnetic core with an anisotropic bus bar opening improves cooling and compactness while avoiding noise removal loss.

Sensor-driven load switching matches renewable output to connected loads, stabilizing voltage and avoiding peak demand charges.

An inductively coupled sensing winding improves low-level LED dimming accuracy while avoiding the cost of secondary-side current transformers.

Waveform-controlled switching enables multi-speed ceiling fan lights on existing wiring, avoiding RF interference, batteries, and added wiring.

Current-sensor feedback adjusts variable resistance switches to suppress capacitor resonance in parallel AC/DC converters while reducing size.

When one converter malfunctions, remaining parallel converters adjust load current and droop settings to keep power delivery uninterrupted.

Placing the regulator between the rectifier and bandgap reference circuit cuts rectification noise and stabilizes the reference voltage.

PTC current limiting and controllable switching tubes replace relays to suppress surge current and prevent overvoltage wear in compact converters.

Parallel overvoltage suppressors protect bypass switches in series power converters, keeping faulty units isolated without stopping power supply.

Conductive housings cover openings between magnetic bodies to suppress flux leakage while keeping inverter current sensing thin and accurate.

Dynamic feedback compensation shifts frequency range by load mode in an active clamp flyback supply to cut power use while stabilizing output.

Hybrid active-passive rectification with stacked converters cuts losses and switch VA rating in multi-port PMSG interfaces to dc grids.

Parallel capacitors shunt AC noise around PoE rectifier elements, preventing DC offsets that disrupt PD resistance detection.

Independent feedback loops with different response speeds stabilize polarity switching for consistent developer recovery and release.

Dynamic control of switch driving voltage uses capacitive and current-sense feedback to cut power-switch loss in notebook power supplies.

A single-inductor converter multiplexes mains PFC and battery discharge to curb EMC issues, avoid overheating, and cut UPS size and cost.

Bi-directional DC conversion creates isolated, adjustable DC buses for EV charging while reducing circuit complexity in solid-state transformers.

Switching the receiving resonance circuit between series and parallel modes improves wireless charging efficiency while preventing overvoltage.

Directly powering inverter modules from solar DC and transformer AC removes auxiliary isolation circuits, cutting noise, power loss, and cost.

Adjusting intermediate-voltage period length from output-voltage feedback cuts ripple, supports variable loads, and simplifies converter control.

A multi-layer wrapped winding wire cuts transformer size while preserving 4000-5000VAC isolation and improving power density.

A parallel switch, capacitor, and varistor circuit limits voltage rise and clamps surges to protect converters without added H-bridge complexity.

Adjusting alternating intermediate voltage periods cuts output ripple in a single-stage power converter and supports variable power loads.

A switched multi-input converter uses one shared PFC and DC-DC stage to cut cost and size while selecting the higher-voltage source.

Optimization of voltage and current signals tracks energy-store capacitance during converter operation despite offsets, EMI, and timing shifts.

Phase control between inverter switchers enables zero-voltage switching while reducing peak current and switching losses in solar power conversion.

An active rectifier stabilizes HVDC during CT X-ray scans, cutting harmonic currents and heat while improving power factor.

Minimizing a voltage-current objective function with time shift correction enables accurate in-operation converter capacitance monitoring.

Calculated synchronous rectifier timing removes zero-current detection circuits, cutting losses, cost, and ripple-related control errors.

Dynamic timing correction keeps interleaved critical-mode PFC currents balanced, reducing heat and supporting higher power output.

Dynamic control of free-vibration count and switching frequency helps PFC circuits stabilize output, cut THD, and reduce power loss.

Parallel stacked module units place a heat dissipation member beside embedded power substrates to improve cooling, cut size, and reduce noise.

Nested receiving coils and switchable rectifier paths improve wireless charging compatibility across power levels without enlarging coil area.

Narrowband rectenna arrays harvest coherent thermal radiation to improve heat-to-electric power conversion and reduce scattering losses.

A clamp and snubber capacitor-diode topology redirects surge power to cut resistor-related losses and improve DC-link energy regeneration.

AC is rectified before self-passivating contacts and reconstructed after them, preventing passivation breakdown, leakage, and shorts.

CT sampling with a bridge rectifier and comparator simplifies synchronous rectifier switching while maintaining fast, precise control.

An intelligent alternating current conversion circuit dynamically adapts input voltages to standard levels using real-time sampling and control logic.

A transformer supplies controlled pre-charge voltage to input filter capacitors via electromagnetic induction.

A feed forward circuit stabilizes the pulse width modulation duty cycle before switching modes to maintain a constant output voltage level.

A bipolar double voltage cell uses segmented switching units to deliver fault current blocking and bipolar voltage contributions.

Segmented circuit breakers isolate faulty modules in high-current rectifiers, preventing cascade failures and protecting functional components.

Integrated H-bridge units transfer secondary ripple power to suppress voltage pulsation and improve power density in traction transformers.

A three-level converter control method uses reactor switching to set midpoint potential without detecting power supply voltage polarities.

A voltage detection circuit samples drain-source voltage to generate a holding voltage for zero-crossing signal generation.

Integrating an autotransformer unit within the generator eliminates separate components, reducing engine weight and simplifying cooling systems.

A three-level inverter controller switches to half bridge operation when output voltage amplitude is low.

A power semiconductor package extracts control circuit energy from the potential difference between reference and supply voltage terminals.

A hybrid-mode boost power factor corrector samples peak or average inductor current to switch between continuous and critical conduction modes.

Shared inrush current suppressing diode and resistor eliminate redundant components, reducing manufacturing costs and power loss.

A phase-shifted polygon forked wye transformer generates pseudo multiple pulse output waveforms through magnetic coupling of primary and secondary windings.

A switching power supply adjusts its oscillation frequency based on input voltage levels to optimize circuit operation.

A hybrid multilevel inverter topology synthesizes voltage levels using fewer switches and DC sources through series-parallel switching.

Switchable discharge path removes stored charge from input capacitors upon mains disconnection, eliminating continuous power dissipation.

A power supply apparatus calculates input power using output measurements and stored conversion efficiency data.

A switching controller detects resonance waveform valleys to actuate a power switch at optimal timing points.

A semiconductor device for switching power supply control uses a shared timer circuit to measure delay times for brownout and plug removal detection.

A solid-state circuit interrupter uses MOSFETs and optical control to detect ground and arc faults in electrical systems.

Duty-controllable switching elements enable step-up and step-down voltage control within a single rectifier, eliminating additional DC conversion circuits.

A power inverter dynamically conditions the power factor of energy transfer from local sources to grid-tied loads.

A power conversion apparatus detects earth-fault conditions by processing leakage current signals to calculate time-variant and time-invariant components.

An isolated phase control circuit employs an optocoupler to separate low-voltage potentiometer signals from mains power, eliminating electric shock hazards.

A multiphase generator system merges AC/DC conversion functions into a single rectification module to reduce component weight.

Optical-electric modules and switch modules enable hot-swap replacement of power modules without interrupting electricity supply in cascaded converters.

Superposition and rectification means reduce power constraints on components by segmenting transfer paths, minimizing heat losses in the transformer.

A power transistor chip integrates a junction field effect transistor to serve as an automatic start-up circuit.

Dynamic switching of segmented bulk capacitance components reduces physical volume and cost while maintaining holdup time across wide AC input ranges.

A synchronous rectifier driver generates gate signals using the switch's own body diode current without external transformers.

A peak detector module samples sinusoidal input voltages to enable precise valley switching in power conversion circuits.

A controller diagnoses inverter switching element states by analyzing DC link voltage curves against predetermined time durations.

Segmented generator windings eliminate circulating common mode currents between parallel converters, removing bulky inductors and reducing thermal stress.

Dynamic switching control maintains output voltage stability and delivers two-thirds power when one input phase disconnects or shorts.

A line interactive UPS uses a rectifying and buck circuit to regulate output voltage without an automatic voltage regulator.

A supply unit feeds power into a DC intermediate circuit via parallel rectifier and inverter branches.

A bus controller uses a feedback control unit to adjust DC voltage levels based on device connection status.

Rectifying circuit achieves 90% power conversion efficiency by matching resonance conditions to eliminate switching losses.

A passive non-linear analog signal conversion circuit processes dimming signals using inversion and filtering modules to generate stable reference power.

A clamping capacitor coupled to a power factor inductor provides zero turn-off loss for the main switch.

A cooling wall portion in an electric power conversion apparatus uses a standing portion and sealant to manage coolant flow passages.