Indian Journal of Science and Technology

Abstract

Objective: In applications like Wind Energy Conversion System, electric cell power conversion and Grid-connected PV generation, a small DC source voltage should be boosted to induce fascinating AC output voltage. Methods/Statistical Analysis: Z Structured Impedance Source Inverter (ZSI) is well-liked for its buck to boost operations. The high voltage gain will be obtained from the normal Z Structured Impedance Source Inverter at low modulation index state. On the other side, a little modulation index state produces high voltage stress at the inverter side switches. To defeat this problem, a Trans Z Structured Impedance Source Inverter (TZSI) is developed. In TZSI, transformer winding turns demand is high and the windings get burnt because of high instant current throughout shoot through length. Findings: A new topology of Trans Z Structured Impedance Source Inverter is introduced in this paper to boost the voltage gain fair enough. In this new topology the winding turn’s usage is smaller amount and consequently inverter gain is lift up by lower the modulation index. To validate the ideas planned in theories, experimental results were taken and bestowed in this paper. Application: This inverter is utilized for three faze Uninterruptable Power Supply. The proposed inverter is designed and simulated in MATLAB/Simulink podium for 3 KVA load capacity and it will sustain the specified output voltage with the substantial drop in voltage at battery bank side.

Keywords: PWM Inverter, Shoot Through Period, Trans Z Source Inverter (TZSI), Uninterruptable Power Supply (UPS), Z Source Inverter (ZSI)