Power Conversion Systems TRIZ Cases

A dimming device measures voltage across a switched-off MOSFET to determine current zero crossing for phase-angle control.

A voltage regulator package uses a programmable trim circuit to adjust periodic signal frequency for optimized output impedance.

A controller limits peak junction temperature in power converters by applying a derating function to reduce output power.

Phase-shifted synchronized PWM signals cancel voltage ripple across DC buses, reducing capacitance bank size and electromagnetic interference.

A feedback module generates a compensating voltage to neutralize input disturbances in electric vehicle charging devices.

A high frequency line filter uses parallel Y and impulse capacitors with ohmic resistors to shape impedance.

Feedback-controlled preregulators adjust offset signals to resolve the contradiction between fixed component settings and dynamic load adaptability.

An emitter-switched current source charges a storage capacitor, then disables to eliminate no-load power dissipation.

Additional windings on inverter T-filter series reactors generate signal voltages proportional to phase conductor currents.

A start-up circuit discharges stored voltage in an EMI filter to reduce standby power consumption.

Electronic component applies electrical quantity at injection point to generate counter-current opposing common mode current.

A high voltage startup circuit uses a diac and transistor to charge capacitors for controller VCC generation.

A power converter alternates between overload and resting periods to manage semiconductor temperatures.

Digital waveform selection replaces physical components to improve power factor while reducing device complexity in switched mode power supplies.

Multi-channel switching mode power supply generates load indication signals to form clock control signals.

Modulating a static switch conduction angle gradually increases generator power flow, preventing protective mechanism tripping during transient overloading.

A voltage ripple controller stabilizes LED driving circuits by filtering input fluctuations through a switching unit.

An active ripple filter generates a cancelling voltage to neutralize DC link ripples in power converters.

A switched power supply injects a low-frequency disturbance into its feedback loop to vary the switching frequency and spread electromagnetic noise.

Dual Schmitt triggers manage bias voltage for controller startup, eliminating high-voltage switches to reduce power dissipation during operation.

A high-side switch driver circuit uses a charge storage capacitor to supply operating power directly from the input potential.

A rectifier control circuit generates oscillating intermediate signals to drive semiconductor switches into safe states.

A p-floating region in the n-drift layer of a high voltage JFET enhances electrostatic discharge capacity.

A harmonic compensation controller models passive filter dynamics to drive precise current regulation.

Targeted LC tuning attenuates second harmonics at 170 kHz, reducing component count and dimensions for automotive wireless power transmission.

A gate driver controller uses galvanic isolation and multiplexing to transmit high-bandwidth data sets across serial channels.

A two-quadrant converter filter device generates compensation currents to neutralize disruptive AC voltage components in power supply connections.

A three-phase rectifier bridge enables a single uninterruptible power supply to accept diverse electrical utility configurations.

An integrated power supply merges isolated and non-isolated circuits to manage multiple load states via a single controller.

A control circuit monitors load voltage, current, and power to select error signals and generate modification signals, preventing overshoot during transitions.

A digital active EMI filter samples incident noise and injects a compensation signal to cancel interference.

A modular filter device uses toroidal core holders and ferrite rings to form current-compensated chokes for electromagnetic interference reduction.

Segmenting switching branches into six controllable paths resolves the trade-off between power factor compensation and harmonic reduction.

A discrete-time model estimates LCL filter parameters using a PRBS voltage signal injected into the converter without additional sensors.

A PWM modulated control signal switches a feedback network modulation node between floating and grounded states to adjust power converter output voltage.

A noise filter circuit processes switching node signals to generate cancellation feedback.

A diode unit connected in parallel to a power semiconductor switch generates a constant amplitude alternating voltage for control circuit supply.

Delaying the load switch gate signal relative to the converter switch transition minimizes current overshoot and stabilizes light output intensity.