International Journal of Advances in Applied Sciences (IJAAS) Vol. 10, No. 4, December 2021, pp. 310~334 ISSN: 2252-8814, DOI: 10.11591/ijaas.v10.i4.pp310-334  310 Journal homepage: http://ijaas.iaescore.com Review of impedance source power converter for electrical applications V. Saravanan 1 , K. M. Venkatachalam 2 , M. Arumugam 3 , M. A. K. Borelessa 4 , K. T. M. U. Hemapala 5 1,2,3 Department of Electrical & Electronics Engineering, Arunai Engineering College, Tamilnadu, India 4,5 Department of Electrical Engineering, University of Moratuwa, Moratuwa, Srilanka Article Info ABSTRACT Article history: Received Dec 8, 2020 Revised Jul 24, 2021 Accepted Aug 2, 2021 Power electronic converters have been actively researched and developed over the past decades. There is a growing need for new solutions and topography to increase the reliability and efficiency of alternatives with lower cost, size and weight. Resistor source converter is one of the most important power electronic converters that can be used for AC-DC, AC-AC, DC-DC and DC-DC converters which can be used for various applications such as photovoltaic systems, wind power systems, electricity. Vehicles and fuel cell applications. This article provides a comprehensive overview of Z-source converters and their implementation with new configurations with advanced features, emerging control strategies and applications. Keywords: Control strategies Impedance source converter Power converter Topological developments Z-source converter This is an open access article under the CC BY-SA license. Corresponding Author: V. Saravanan Department of Electrical and Electronics Engineering Arunai Engineering College Tiruvannamalai 606 603, Tamilnadu, India Email: vsaranaec@yahoo.co.in 1. INTRODUCTION This paper reviews the developments made in the field of Z source converter from the year 2018 to till date addressing several structures with detailed analysis of operations, its switching patterns, modulation techniques, control methods and different applications. Impedance (Z) source converter was introduced by Peng in 2002 which allows single stage conversion with buck and boost capability and eliminates the need for dead-time protection. The short circuit of leg switches, named as shoot-through, which can be used for boosting the input voltage. Many derivatives of this basic topology are developed by various researchers throughout the world and adopted to all existing types of power converters, i.e., DC–AC, DC–DC, AC–DC, and AC–AC. These topologies are aimed to increase the conversion system reliability and efficiency with decreased cost, volume, and weight. The topologies are used for various applications such as photovoltaic (PV) systems, wind energy conversion, fuel cells, uninterruptible power systems, motor drives, energy storage systems, and power factor correction [1], [2]. Abdelhakim et al. has presented classification and review of modulation schemes of the three-phase impedance source inverters. They classified different types of modulation schemes such as three phase leg shoot through based (3P) modulation schemes; and single phase leg ST based (1P) modulation schemes. The existing widely used pulse width modulation (PWM) strategies for Z source inverter (ZSI) includes simple constant boost control (SCPWM), maximum boost control (MPWM) and maximum constant boost control (MCPWM) sinusoidal PWM, sinusoidal PWM with 3rd harmonic injection and space vector modulation