Single-stage Five-level Common Ground Transformerless Inverter with Extendable Structure for Centralized Photovoltaics
作者机构：Department of Electrical EngineeringNational Institute of Technology RaipurIndia Renewable Energy LabPrince Sultan UniversityRiyadh11586Saudi Arabia Department of Electrical and Electronics EngineeringSRM Institute of Science and TechnologyKattankulathur Campus603203-Tamil NaduIndia
出 版 物：《CSEE Journal of Power and Energy Systems》 (中国电机工程学会电力与能源系统学报（英文）)
年 卷 期：2023年第9卷第1期
页 面：37-49页
核心收录：
学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0835[工学-软件工程]
主 题：Active and reactive power boost inverter common mode voltage(CMV)grid-tied inverters inrush current leakage current photovoltaics
摘 要：The paper presents a five-level common ground type(5L-CGT),transformer-less inverter topology with double voltage *** proposed inverter uses eight switches and two capacitors,charged at input voltage *** inverter in its basic form acts as a string inverter for low-power PV ***,it can be extended to work as a scalable multi-level inverter with higher power handling capability to act as a centralized *** working of the inverter with the sizing of the components is presented with mathematical *** efficiency of the proposed PV inverter is found using thermal losses associated with switches using PLECS software.A prototype of 1 kW has been designed,and experimentation has been carried *** loads with a lagging power factor up to 0.6 have been tested with the inverter to establish the usability of the proposed inverter in a worst-case emulated homeuse *** total harmonic distortion(THD)at the output has been recorded using a power quality analyzer with voltage and current THD values of 4.5%and 2.5%,respectively,which lies within the limits of IEEE 519 *** highest power conversion efficiency of the inverter has been recorded to be 96.20%.
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