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A Comparison of the Performance Indices of Embedded EZ-Source Inverter Using Different PWM Techniques

Abstract

Many converters were proposed for boost/buck operation for power supply. But these converters have more stages due to separate boost or buck converters, as a result, it increases the cost, volume, conduction losses and also reduces the efficiency. Impedance source-based inverter is proposed for reducing the converter stage and achieve buck/boost operation using a shoot through features with simple passive elements. The impedance source converter is modified by replacing capacitor into dc source for reducing current and voltage across dc link and smoothing the dc voltage. This circuit is called as embedded EZ- source inverter. This circuit gives same voltage gain with same passive elements rating and counting. Different PWM technique is used to control the inverter output voltage and reduce the current harmonic. The circuit is simulated using three PWM techniques in MATLAB environment. The circuit performance is compared with simulation results.

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Correspondence to P. Kannan.

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Kannan, P., Xavier, S.A.E. A Comparison of the Performance Indices of Embedded EZ-Source Inverter Using Different PWM Techniques. Wireless Pers Commun (2020). https://doi.org/10.1007/s11277-020-07107-6

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Keywords

  • PWM technique
  • Voltage gain
  • Harmonic and impedance source inverter