Design and analysis of multi phase quasi Z source direct matrix converter with various PWM control techniques

Abstract

An AC to AC converter is a combination of power electronic devices newlinethat can convert fixed AC into variable AC according to the requirements and newlinethe usage. The output voltage and frequency can be managed by AC to AC newlineconverter. Cycloconverter is like a transformer that converts the AC voltage of newlineone frequency to another. The single-stage power conversion done by matrix newlineconverter is an alternative to cycloconverter. Variable voltages and newlinefrequencies can be obtained from the matrix converter when the source has newlinefixed voltage and frequency, and vice versa. The applications of matrix newlineconverters can be broadly classified into wind energy conversion systems as newlinewell as multiphase and multi-motor drive systems. This work mainly focuses newlineon the application of matrix converters in the field of the multi-phase drive newlinesystem. Three-phase in and k-phase out matrix converter can feed the required newlinepower to the multiphase drive system from a fixed frequency and fixed voltage newlinethree-phase voltage source. newlineThe advantages of multiphase drive systems over traditional threephase newlinedrive systems include a higher degree of freedom in control, lower perleg newlinepower rating, higher system stability, higher fault tolerance properties, newlinehigher redundant structure, reduced volume of machines, reduced dc-link newlinecurrent harmonics and less current losses, reduced rotor harmonics, reduced newlinepulsating torque amplitude, and high frequency pulsating torque production. newlineThe applications of multiphase matrix converter are aircraft applications, newlinedefense, hospitals, ship propulsion, traction drive, naval ship, and hybrid newlineelectric vehicle applications. newline