Design a 25-level inverter topology with less switching devices fed by PV systems

Abstract

<span lang="EN-US">Multilevel inverter (MLI) technology has lately emerged as one of the most popular solutions for high power and medium voltage energy management. MLIs have many benefits and require more switches for higher levels, which are considered disadvantaged. This could result in large size and extremely expensive cost for the MLI. So, in order to overcome this problem, a new MLI topology is proposed with reduced number of switches. A 25‐level inverter fed by isolated unequal photovoltaic panels as DC sources is chosen in this study. The structure of DC voltages is chosen as (1:1:5:5) Vdc. The proposed approach, which is created using twelve switches, is ideally suited for a high-power application. Multi-carrier with a sinusoidal PWM technique is programmed as a controller. According to the simulation findings, a single-phase system's output voltage and current total harmonic distortion (THD) values are 1.2% and 0.462%, respectively, while a three-phase system's values are 1.07% and 0.342%. These findings prove that the power circuit and investigation were successful.</span>

Design a Three Phase 43-level Inverter Fed by Renewable Energy Source

“…This study's main goal is to provide high output voltage with few switching components and minimal THD. In 2023 [ 19], Design single and three phase inverter to generate 25-level using a 12switches, and 4-PV sources was built based on MSPWM switching method. a single-phase system's output voltage total harmonic distortion obtained for the output voltage is 1.2% while a three-phase system's values are 1.07%.…”

Harmonics mitigation technique for asymmetrical multilevel inverter fed by photovoltaic sources

“…The THD value of the output voltage was 3.4053% for zero-level state and 3.0252% for none zero state. Design single and three phase inverter to generate 25-level using a 12-switches, and 4-PV sources was built based on MSPWM switching method [26]. a single-phase system's output voltage total harmonic distortion obtained for the output voltage is 1.2% while a three-phase system's values are 1.07%.…”