Ac-Dc Conversion TRIZ Cases

A short-circuit elimination check isolates only the faulted converter, enabling fast restart of parallel units and reducing wind or solar downtime.

Modular isolated converter stages split a high DC bus into manageable voltages, enabling joint low-voltage DC supply with conventional IGBTs.

Dual inverters separately drive steering and telescopic motors, improving control precision, motor efficiency, and steering assist in autonomous vehicles.

A symmetric 10-switch, 4-capacitor MMC submodule cuts fault energy in half while improving capacitor protection and fault tolerance.

Short-circuit current sensing and test energization let a power converter assess main circuit soundness without disassembly.

A multi-port transformer and separate conversion circuits enable simultaneous AC input and output across multiple voltage parts, including a vehicle battery.

Mode-aware MMC control generates balance voltage references to keep cell voltages stable during STATCOM operation and grid unbalance.

Short-pulse switch testing uses LC filter capacitor voltage windows to detect ANPC bridge faults before grid connection and prevent switch damage.

A balance reference using DC bus voltage difference and even harmonic current helps a three-level inverter maintain neutral-point balance.

A two-stage adiabatic switched-capacitor converter cuts AC-DC energy loss while delivering stable DC output with minimal ripple.

Series-connected bus capacitors split DC bus voltage so each DC/DC circuit uses fewer high-voltage semiconductors and lowers converter cost.

A heat-equivalent value based on current squared over time limits converter power only when needed, reducing excessive overheat restriction.

Circulating current detection triggers wave blocking across parallel inverters to contain DC bus short-circuit faults and overvoltage damage.

Selective switching lets one UPS power converter handle rectification and battery charging, cutting module count, space, and cost.

Scalable storage blocks and adjustable cooling and EMC let one cabinet adapt to different drive loads without replacing control electronics.

One converter topology combines AC ports, a DC bus, and cell-level energy storage to support DC charging and AC microgrid operation in less space.

Group-based voltage evaluation replaces mean-value control to detect cell energy imbalance earlier and avoid overvoltage or undervoltage trips.

A lower-doped electric field relaxation layer eases trench-bottom field concentration while preserving current path width and low on-resistance.

Fuzzy-tuned virtual inertia and damping help a grid-connected PV inverter stabilize frequency and voltage while reducing harmonic disturbance.

A three-level dual-path converter cuts inductor RMS current to limit DCR loss and preserve efficiency with smaller inductors.

A DC-line suppression circuit with a diode and current limiter absorbs stored energy to damp oscillatory voltage after converter cell gate blocking.

By measuring converter-side voltage and current with the transformer secondary disconnected, leakage impedance can be estimated for accurate short-circuit capability.

Intermittent switch control lets one bidirectional charger power an electric heating catalyst and external loads across operating points.

Staggered ON timing across multiple inductive load drivers cancels ripple current, cutting heat and extending electronic component life.

Phase-shifted PWM with selective leading and trailing edge modulation balances flying capacitor voltages while reducing stress and oscillations.

Real-time supply monitoring adjusts PWM duty cycles to rebalance unsymmetrical inverter voltages and prevent battery SoC drift.

Differential geometry control balances flying-capacitor voltages in DC/AC inverters, reducing semiconductor voltage stress and supporting panel-level MPPT.

A current transformer and rectifiers derive control power from load current, keeping a solid-state relay circuit powered when switch voltage drops.

Average capacitor-voltage control and DC current suppression help MMC converters cut capacitor volume while sustaining operation during faults.

A single-switch current sensor is cross-checked with phase output current to detect inverter faults while limiting sensor redundancy and cost.

Stator-flux-based pulse pattern control removes machine-specific rotor flux estimation, cutting controller complexity while keeping fast speed response.

A shared thyristor power supply using rectification and capacitor coupling simplifies AC-DC converter circuitry, cuts area, and lowers cost.

Even-harmonic current detection lets the inverter lower output voltage during transformer saturation, reducing inrush current without extra hardware.

Keeps at least one power converter in voltage control during control-method updates to stabilize the DC bus and maintain load sharing.

Series flying capacitor circuits and a reactor let the converter use lower-withstand-voltage switches to cut losses, heat, and size.

A timed bypass switch limits startup inrush current, then shunts the NTC path to cut power loss, cooling delays, and burnout risk.

Uses half-bridge modules and a storage capacitor to convert single-phase 240V AC into balanced three-phase 480V AC with lower unbalance.

Multiple synchronous generator models are combined in converter control to add synthetic inertia and reduce grid frequency swings.

A resistance switching circuit changes output resistance by polarity to limit parallel supply interference and keep output voltage stable.

A multilevel flying-capacitor switching cell cuts switch and inductor voltage stress, reducing ripple, power loss, and converter size.

Semiconductor phase selection and rectification let one high-voltage setup handle AC and DC connector tests with lower switch wear and cost.

Separate upper- and lower-arm transformers keep safety control and capacitor discharge available during overlapping low-voltage and GD power loss.

Common-mode feedback and a center shunt switch stabilize H-bridge outputs, reducing EMI and signal distortion at high bit rates.

Bypassing healthy DC poles through MMC director valves limits fault overvoltage and avoids costly high-voltage cable and arrester ratings.

Variable-frequency resonant switching widens input voltage range while limiting energy storage size and switching loss.

Bus-voltage feedback control adjusts distributed DC power supplies to suppress oscillation and stabilize long-distance transmission.

A single auxiliary inductor and variable switching frequency maintain ZVS in an interleaved totem-pole converter while limiting reactive current losses.

Phase-shifted carrier grouping balances conduction times in multilevel converters while raising switching rate without added output distortion.

Temperature-based self-diagnosis detects and localizes open-circuit faults in modular inverters without added sensing circuits.

Triangular inductor current pulses let an inverter feed the grid with simpler control, smaller storage chokes, and no broadband current sensors.