http://www.iaeme.com/IJEET/index.asp 36 editor@iaeme.com International Journal of Electrical Engineering & Technology (IJEET) Volume 8, Issue 4, July-August 2017, pp. 36–47, Article ID: IJEET_08_04_005 Available online at http://www.iaeme.com/IJEET/issues.asp?JType=IJEET&VType=8&IType=4 ISSN Print: 0976-6545 and ISSN Online: 0976-6553 Journal Impact Factor (2016): 8.1891 (Calculated by GISI) www.jifactor.com © IAEME Publication ANALYSIS OF SINGLE PHASE Z-SOURCE INVERTER USING VARIABLE LOAD Gauravi S. Somani, Dr. P. H. Zope M.E. Scholar, Assistant Professor, Department of Electronics and Telecommunication Engineering, SSBT‟s C.O.E.T., Bambhori, North Maharashtra University, India ABSTRACT This paper presents a high performance, low cost prototype Z-source inverter for variable load or household based application. It is an improvement over Traditional Voltage-source and Current-source inverter with a unique X-shaped network. The X- shaped network can provide a single stage power conversion concept where as the traditional inverter requires two stage power conversion for renewable energy applications. Z-source inverter system is designed and simulated using Matlab- Simulink and their results are compared with the hardware designed by microcontroller ATMEL AT89S52. The sinusoidal PWM signal are generated using microcontroller with 10Khz switching speed.The performance analysis, simulation and comparison have been carried out it results the Z-source inverter system is more suitable as compared to traditional inverters. The efficiency, stability, faster switching action of the MOSFET, the total harmonics distortion against the nonlinear load is also better as variation in modulation index. Key words: Z-source inverter (ZSI), Pulse Width Modulation (PWM), Matlab- Simulink, Modulation index. Cite this Article: Gauravi S. Somani, Dr. P. H. Zope. Analysis of Single Phase Z- Source Inverter using Variable Load. International Journal of Electrical Engineering & Technology, 8(4), 2017, pp. 36–47. http://www.iaeme.com/IJEET/issues.asp?JType=IJEET&VType=8&IType=4 1. INTRODUCTION Z-source inverters are new breed of inverter in which voltage boost operation can be simultaneously performed along with inversion operation, which greatly reduces the losses occurring due to two stages while using conventional inverter method. These losses include the losses occurring due to transformer or due to DC-DC boost converter. ZSI although reduces the overall cost by reducing the stages[1] In the initial part of paper a review of the resultant analysis of hardware and software with their modulation index. The technique is discussed with basic principle, methodology, advantages and disadvantages. At last comparative analysis of Hardware and Software is also provided.