Balanced Voltage Sag Compensation on Adjustable Speed Drive of a Gas Compressor
2019
The paper deals with the analysis of balanced voltage sags on V/f adjustable speed drive (ASD) of a gas compressor based on using Z-source inverter (ZSI). It has been shown that ZSI drastically extends the permissible range of DC-link voltage reduction. The voltage tolerance curves are obtained to estimate Z-source ASD immunity to balanced voltage sags. Stability of the investigated ASD system is provided by means of regulating ZSI shoot-through duty ratio. The simulation results are given to affirm presented features.
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