Solar Powered Asymmetric Cascaded Multilevel Converter fed Multilevel Inverter

IF 1.6 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electrical Engineering & Technology Pub Date : 2024-08-07 DOI:10.1007/s42835-024-01994-6

K. Jayasudha, Vijayalakshmi Subramanian, M. Marimuthu, Ram Prakash Ponraj

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引用次数: 0

Abstract

Non isolated multilevel inverters (MLI) with reduced switch components are becoming more popular to attain higher voltage levels. However, this kind of MLI increases the number of DC sources and has some issues like higher charging current, a high peak VA rating of the switches, and a high capacitor ripple voltage. This manuscript presents a modified multicell based multilevel boost inverter with a multistage DC output. It has three sections namely Boost converter, level shifter and h-bridge inverter. The proposed circuit is powered by solar photovoltaic (PV); using the Perturb and Observe Maximum Power Point method. The suggested circuit working in asymmetric mode and produces a 31-level output waveform. This topology helps to reduce the Total Harmonic Distortion, increases the output voltage levels, and reduces the common mode voltage. This topology is compared with other multilevel inverters presented in recent literature and the analysis is presented. Simulation results for various irradiance values are presented with other key factors. The experimental prototype of a 1.5 kW, single phase, 31-level inverter is designed and verified and the proportional results are substantiated.

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太阳能供电的非对称级联多电平转换器喂多电平逆变器

非隔离多电平逆变器（MLI）减少了开关元件，因此越来越受欢迎，以获得更高的电压水平。然而，这种多电平逆变器增加了直流源的数量，并存在一些问题，如充电电流较大、开关的峰值额定电压较高、电容器纹波电压较高等。本手稿介绍了一种具有多级直流输出的改进型基于多电池的多电平升压逆变器。它包括三个部分，即升压转换器、电平转换器和 h 桥逆变器。所建议的电路由太阳能光伏（PV）供电，采用扰动和观测最大功率点方法。建议的电路以非对称模式工作，产生 31 级输出波形。这种拓扑结构有助于降低总谐波失真，提高输出电压电平，并降低共模电压。该拓扑结构与近期文献中介绍的其他多电平逆变器进行了比较和分析。此外，还介绍了各种辐照度值和其他关键因素的仿真结果。设计并验证了 1.5 千瓦单相 31 电平逆变器的实验原型，并证实了比例结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Electrical Engineering & Technology ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

4.00

自引率

15.80%

发文量

321

审稿时长

3.8 months

期刊介绍： ournal of Electrical Engineering and Technology (JEET), which is the official publication of the Korean Institute of Electrical Engineers (KIEE) being published bimonthly, released the first issue in March 2006.The journal is open to submission from scholars and experts in the wide areas of electrical engineering technologies. The scope of the journal includes all issues in the field of Electrical Engineering and Technology. Included are techniques for electrical power engineering, electrical machinery and energy conversion systems, electrophysics and applications, information and controls.