Ac-Dc Conversion TRIZ Cases

A dual inverter power conversion system activates a second unit based on input power thresholds to optimize energy harvesting.

A three-phase PWM signal generating apparatus redistributes basic voltage vector combinations to increase switching mode holding time width.

Active harmonic cancellation via power electronic switching eliminates grid resonance and equipment heat without passive filter dissipation.

Hybrid control logic monitors RLC filter states to suppress harmonic distortion and stabilize output voltage under fluctuating DC inputs.

A high-voltage pulse generator uses modular upper and lower sections with inverted control mechanisms to produce alternating polarity pulses.

Dynamic voltage boosting reduces the time constant when charging large capacitive loads in CMOS imagers.

A dual-path inverter circuit converts input energy through a direct stage that bypasses the DC-to-DC converter.

Segmented submodules with galvanic inductive links constrain short-circuit currents, preventing chain reaction failures without increasing converter weight.

A control method divides inverter half cycles to adjust switching frequency and achieve soft switch states.

A redundant power supply system uses pulse width modulation to share load between primary and secondary units.

A magnetic flux error correction unit calculates disturbance components from main circuit wiring to enable accurate rotor position detection.

A multi-level inverter uses a resistor and controller to pre-charge the flying capacitor before main operation begins.

Ramp rate control limits voltage changes to prevent latch-up conditions in integrated circuits.

Dynamic stage selection in a charge-pump circuit adjusts source impedance to suppress ripple while supporting variable loads and output voltages.

Segmenting the converter with intermediary inductances reduces harmonic load and volume compared to conventional DC link designs.

A single-phase multi-level inverter uses an AC-bypass switching state to isolate DC capacitors from the AC source.

Full bridge cells block generator and transformer fault currents, eliminating expensive machine-side and line-side circuit breakers.

A modular voltage source converter structure integrates bipolar and unipolar cells to manage AC voltage generation and reactive power capabilities.

An inverter system uses switch controllers to convert direct current into single-phase or multi-phase alternating current outputs.

A fault protection apparatus adjusts reference port connections to prevent overvoltage damage in photovoltaic systems.

Parallel semiconductor switches divert fault currents away from converter arms, preventing damage during DC side short circuits.

A modular multilevel converter interrupts current flow through one arm and transmits AC power through another to isolate DC faults.

A command generation device calculates virtual generator rotation speed to determine active and reactive power targets for inverter control.

A photovoltaic inverter capacitor pre-charges to a first voltage before grid connection.

A DC-to-DC converter controller synchronizes switch states to maintain stable operation during capacitor failure.

Improved space vector modulation calculates dwell times using ampere-second balance to reduce load-side inductance requirements.

Symmetrical winding placement equalizes impedances to prevent iron core saturation from DC leakage flux, reducing rated voltage requirements.

Dynamic resistance switching optimizes power delivery across varying DC capacitor voltages, expanding the operating range of control circuits.

Multi-winding inductors on a shared core filter AC output while lowering converter costs.

Dynamic hysteresis width modulation shifts harmonic components into damped ranges, reducing resonant excitations and mains noise.

Reactive power circulation maintains constant current in IGBT bridges, reducing thermal cycling and mechanical stress that shorten device lifespan.

A drive control unit manages switch timing to enable safe connector insertion without modifying the physical interface.

A voltage compensating method adjusts switching times in a converter to offset dead time losses.

A filter arrangement merges differential and common mode coils on a shared magnetic core to optimize flux circulation.

A reverse power feed PSU uses a single transformer with multiple primary windings to supply remote network distribution point units.

Feedback mechanisms regulate circulating currents in multilevel converters, reducing losses and enabling smaller inductor sizes.

Low-resistance switch transistors replace high-drop diodes in multi-level inverters, cutting conduction losses and harmonic components.

A power conversion device calculates switching times to prevent overlap in bi-directional switching elements.

A buck converter control circuit samples input line voltage to regulate power switch operation for stable output.

A charge pump control circuit uses a driver to manage switch pairs for energy transfer through a flying capacitor.

Segmenting voltage conversion into separate switching units reduces power losses and component stress in high-power uninterruptible power supplies.

Control circuitry adjusts output current commands using detected voltage amplitude oscillation components.

Coupling arc light into a shared optical path disrupts message transmission, enabling reliable fault detection without adding separate communication lines.

A power conversion device separates high-voltage and low-voltage ground wirings using a single equipotential node to maintain consistent reference potentials.

A converter controller manages energy recovery by creating short circuits between phase lines to reduce safety-critical torque.

A voltage balancing mode adjusts power drawn from clamp capacitors based on their individual voltage levels to maintain stable operation.

A multi-level inverter applies selective switch blocking to manage current gradients during transient voltage variations.

An LCL filter eliminates bulky DC energy storage components while maintaining high input power factor and continuous load power.

Low-pass filtering shapes control signals for power semiconductor switches to damp mains voltage oscillations above the fundamental frequency.

A high side switch circuit uses a secondary energy storage device to maintain bootstrap capacitor charge.