Ac-Dc Conversion TRIZ Cases
- Modular Power Converter Energy Storage Ripple Cancellation
High frequency transformer cancels AC ripple currents in modular power converter energy storage units.
- Inverter With Coupled Inductor And Phase-Shifted Half-Bridges
Coupled inductor filters ripple currents in phase-shifted half-bridge inverters, reducing device complexity and volume.
- Modular Multilevel Converter Reducing Capacitor Volume
Segmenting chopper cells into groups with distinct voltage ratings halves the required capacitor count, reducing device volume and power conversion loss.
- Active Compensator Circuit for Power Grid Resonance Suppression
Compensator circuit emulates a resistor to suppress filter resonance, reducing equivalent impedance and stabilizing distributed power generation systems.
- Multi-Level Bridge Power Converter for Wind Turbines
Segmenting the bridge into multiple legs reduces distortion and filter size, resolving complexity constraints in wind turbine power generation.
- Active Neutral Control Circuit for Unbalanced Three-Phase Inverter Systems
An active neutral control circuit generates balanced three-phase AC power using a resistor bank and voltage sensor.
- Inverter Architecture for Reverse Current Protection in PV Systems
Direct medium-voltage transformer connection to inverter AC output eliminates external contactors, reducing system complexity and cost.
- Active Rectifier and Regulator Circuit for Implant Power
A rectifier and regulator circuit merges functions to minimize component count.
- Inverter Open Circuit Voltage Clamping via Load Resistor
A load resistor clamps open circuit voltage in photovoltaic inverters, preventing damage from cold start spikes without expensive chopper circuitry.
- Isolated DC-DC Converter Voltage Control for Vehicle Inverter Size Reduction
An isolated DC-DC converter regulates the voltage of a series-connected capacitor to maintain stable input power for vehicle drive inverters.
- Configurable Multistage Charge Pump with Supply Detect
Dynamic stage adjustment via supply detection maintains low ripple and adequate load drive across wide input voltage ranges.
- Multilevel Inverter Voltage Balancing via Harmonic Injection
A control unit generates a harmonic component out of phase with the fundamental current to offset input voltage unbalance in multilevel inverters.
- Time-Sharing Bootstrap Drive Circuit for Switch Capacitor Converters
A drive circuit uses a single bootstrap capacitor to power multiple high-side switches in a switch capacitor converter.
- Three-Port DC/AC Converter for Grid Regulation
A three-port DC/AC converter maintains stable DC port voltage while regulating grid frequency through a dedicated storage interface.
- Multi-Protector Fuse Circuit for Short Circuit Protection
A multi-protector fuse circuit structure withstands short circuit voltage without physical damage.
- Capacitor Bootstrap Buck Converter for Single Cell Voltage Regulation
A capacitor pump and buck converter configuration generates regulated voltage rails from a single lithium ion cell input.
- In-Vehicle Charger Ground Fault Detection via Dynamic Test Voltage
Dynamic test voltage overcomes diode forward barriers, enabling ground fault detection in alternating current intervals where standard methods fail.
- Three-Level Bidirectional DC-AC Module for High-Power EV Charging
A three-level bidirectional DC-AC module enables high-power charging via modulated PWM signals.
- Dynamic IGBT Gate Drive for Switching Loss Reduction
A two-step current source profile transitions between high and low levels to optimize IGBT switching speed.
- Power Converter Voltage Reflection Control
A power converter uses a voltage sensor to detect reflected test pulses for dynamic pulse width adjustment.
- Power Converter Controller with Phase-Dependent Carrier Frequency
A controller adjusts carrier frequencies based on phase angles to normalize ripple components in power converter reactors.