Ac-Dc Conversion TRIZ Cases
- Bipolar Power Conversion Circuit for Low DC Leakage
A charge-pump bipolar signaling circuit generates positive and negative voltages from a unipolar design to cut DC leakage and power use.
- MRFT PID Auto-Tuning for 3-Phase DC-AC Converters
Modified relay feedback auto-tunes PID control in 3-phase DC-AC converters, avoiding inaccurate models while preserving stability margins.
- Integrated Energy Storage Inverters Without Bulky Transformers
A multilevel PV inverter embeds battery or supercapacitor cells to combine MPPT, storage, and grid conversion without bulky low-frequency transformers.
- Power Converter Voltage Limiting for Breaker-Failure Overvoltage
Limits voltage command and current feedback outputs to prevent power converter overvoltage when output-side breaker failure rapidly raises impedance.
- Stepwise Gate Drive Circuit for SiC Switching Oscillation Control
Stepwise gate drive capability switching helps SiC power modules pass unstable regions faster, cutting oscillation, voltage surge, and switching loss.
- Hybrid Clamped Converter Control for Minimum DC-Bus Capacitance
By shaping reference waves and switch duty ratios, this case cuts HCC DC-bus capacitance while keeping capacitor voltage fluctuation within limits.