Terminal Voltage and Common Mode Voltage Analysis for Various PV Inverter Topologies

Abstract

The switching function method is critical for understanding the effect of different switching mechanisms or Pulse Width Modulation (PWM) designs on both terminal voltage and common mode voltage. The switching patterns of numerous five-level inverter topologies are determined using modified PWM in this study. The switching function technique is used in this study to investigate the terminal voltage of the PV array and the common mode voltage of the inverter. Notably, as compared to normal PWM approaches, five-level common mode voltage source inverters (CMLIs) need less carrier waves. The study gives thorough insights into the overall architecture of the examined converter, as well as terminal and common mode voltage expressions. When compared to normal PWM, any five-level CMLI requires less carrier waves. This document also details the converter’s overall structure, terminal and common mode voltage expressions, and switching patterns.

Keywords:

• cascaded multilevel topologies
• converter topologies
• inverter topologies
• leakage current
• PV array
• PWM technique

Disclosure Statement

No potential competing interest was reported by the authors.

Data Availability Statement

Data sharing is not applicable to this article as no new data were created or analyzed in this study.

Additional information

Notes on contributors

Surbhi Aggarwal

Surbhi Aggarwal received her B.Tech degree in electrical and electronics engineering from R.K.G.I.T, U.P.T.U, India in 2015 and her M.Tech degree in Power Systems from Thapar University, Patiala, India in 2017. At present, pursuing a Ph.D. at the Department of Electrical and Electronics Engineering, National Institute of Technology, Delhi, India. Her areas of interest are power systems, electric vehicles, and electric vehicle charging stations.

Ravi Pal

Ravi Pal received his B. Tech degree in electrical engineering from U.P.T.U, India in 2018 and M. Tech degree in Electrical Engineering, from NIT Delhi, India in 2021.

Amit Kumar Singh

Amit Kumar Singh received his B. Tech degree in electrical engineering from U.P.T.U, India in 2007 and M. Tech degree in Power and Energy Systems Engineering, from NIT Silchar, India in 2009. He persuaded PhD in Electrical Engineering from Indian Institute of Technology, Patna, India, in 2014. His areas of interest are Power System Restructuring /Deregulation, Electricity Market, Distributed Generation, Renewable Energy, Security Analysis, Fault Detection, Operation and Control of Power Systems, Smart Energy Network.