Dc-Ac Conversion Without Reversal TRIZ Cases
- Hybrid Parallel Converter Capacity Matching for Lower Voltage Capacity
Output current models align L-VSC and LC-VSC current capability, cutting total voltage capacity in parallel high-power converters.
- Inverter Control Switching Using GFL-to-GFM Initial Value Alignment
Pre-setting GFM amplitude and phase from GFL values smooths inverter mode switching and limits output voltage fluctuation.
- MMC Carrier Modulation for Precise Circulating Current Control
Carrier modulation tied to circulating current expands control resolution in MMC leg circuits, improving current regulation accuracy.
- Modular Multilevel Converter Carrier Shaping for Charge Balancing
Carrier shifts and curvature changes in phase-shifted PWM balance module charge and temperature despite internal resistance differences.
- Common-Bus Converter Switching Phase Control for Harmonic Reduction
Shifting converter switching frequency and phase on a common bus cuts ripple RMS current, harmonic distortion, and DC link capacitor size.
- Converter Cell Thyristor Bypass for Overcurrent Protection
A thyristor bypass turns on during converter-cell overcurrent to divert fault current from freewheel diodes and prevent damage.
- Quasi-Three-Level Power Converter for Low-Loss WBG Switching
A hybrid 3L NPC converter splits switching between vertical and horizontal legs to cut losses and harmonics while easing WBG integration.
- Quasi Multi-Level Converter Topology for Scalable MV Voltage
Modular phase legs and nested switching cells scale MV voltage while cutting switching losses and capacitor volume.
- Power Converter Mode Switchover Timing for Stable 2-Level/3-Level Control
Switching between 2-level and 3-level modes while a set semiconductor element stays ON reduces current disturbance and torque variation.