Simulation of Transformer Based Z-Source Inverter to Obtain High Voltage Boost Ability

The Transformer based Z-Source inverter is an enhanced series inductance Z-Source impedance network. This proposed inverter is used to combine the main circuit and the power source. This configuration delivers a strong boost capacity to overcome the barriers of the series inductance Z-source inverter. Further, with the usage of low voltage capacitors and the transformer, the capacitor voltage strain gets reduced. The advantage of projected topology over series inductance Z-source inverter is that two built-in capacitors block DC currents in transformer windings and prevents core saturation, which results in easy construction with effective cost and the efficiency is also improved. The stray inductance effects are reduced by transformer. The main point of the proposed technique is that, a very short shoot through zero state is essential to obtain high voltage conversion which improves the output power quality. This circuit can be applied to several power conversion applications which use impedance-type power inverters. The output results of the Transformer based Z-source inverters are simulated in MATLAB/Simulink using a 120 degree mode pulse circuit. The simulated output results of the conventional and proposed inverters are compared and verified.