An improved Z-source inverter with high voltage boost ability

Abstract An improved high voltage boost Z-source inverter topology is proposed to improve ability. Compared the conventional inverter, it can produce very with a short shoot-through duty ratio, stress on capacitors and inverter-bridge greatly reduced, has inherent limitation inrush current at startup. The addition of input capacitor an active switch allows in Z source network flow reverse direction, which adapts wide range load change. Theoretical analysis, operation principle comparison are explicitly described. Simulation experimental results presented demonstrate new features.