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Z-SOURCE INVERTER

Abstract :

This paper presents a Z-source inverter system and control for adjustable speed drives (ASD). The Z-source inverter employs a unique LC network to couple the inverter main circuit to the diode front end. By controlling the shoot-through duty cycle, the Z-source can produce any desired output ac voltage, even greater than the line voltage. As results, the new Z-source inverter system provides ride-through capability under voltage sags, reduces line harmonics, and extends output voltage range. Simulation results will be presented to demonstrate the new features.

References :

1. B.K.Bose."Adjustable speed ac drive systems."

2. Y. Kim and S. Sul, “A novel ride-through system for adjustable-speed
drives using common-mode voltage,”

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