This study presents Field Programmable Gate Array (FPGA) implementation of Sinusoidal Pulse Width Modulation (SPWM) technique for 5-level Cascaded H-Bridge Multilevel Inverter (CHB-MLI). The fast and easy generation of switching signals for multilevel inverters (MLI) which has complex switching schemes is an important issue. In addition, because of parallel processing, the use of FPGAs in the field of power electronics has increased. MATLAB-Simulink software and Xilinx System Generator (XSG) are used to analyze CHB-MLI and generate architecture of PWM signals which embedded in FPGA. After implementation on Digilent Genesys II FPGA board, the experimental gate signals waveforms are observed on a digital oscilloscope.

This paper introduces an innovative multi-level inverter (MLI) topology operating with a single DC source. The proposed structure consists of a DC-DC rectifier (HFL), a switched capacitor (SC) unit and a Packaged U-Cell (PUC) module. The topology synthesizes 17 voltage levels at the output with only 10 power switches, offering low control complexity and high power efficiency. The high number of levels at the output voltage provides a high quality output voltage wave. A soft charging cell (SCC) is used to suppress impulsive charging currents in the switched capacitors. Experimental results show that SCC effectively suppresses impulsive currents in switched capacitors. The high frequency link (HFL) used to provide high voltage gain improves the cost efficiency of the system by reducing transformer sizes and costs. Simulation and experimental results show that the proposed topology achieves 96.92% efficiency, near sinusoidal current output and total harmonic distortion (THD) values between 4.99% and 1.23%. Moreover, with a low cost function (CF) value of 1.60, it is proven to offer a viable alternative for applications such as Renewable Energy Systems (RES) and Electric Vehicles (EVs). These findings demonstrate the applicability of the proposed MLI topology in these areas with low cost, high efficiency and quality power output.

In recent years, the growing demand for efficient voltage boosting solutions has been driven by advancements in renewable energy systems, electric vehicles (EVs), and photovoltaic (PV) arrays. However, conventional magnetic-based inverters remain bulky and inefficient for compact, high-performance applications, limiting their use in emerging technologies. To address this, the objective of this study is to develop a compact, single-source switched-capacitor multilevel inverter (SC-MLI) topology that achieves high voltage gain with minimal component count. The proposed 13-level SC-MLI employs a novel switched-capacitor structure and is evaluated under Natural Level Control (NLC) and Sinusoidal PWM (SPWM) schemes. Theoretical analysis, MATLAB/Simulink simulations, and experimental validation on a 100–1000 W prototype are carried out, along with thermal modeling in PLECS. The results show that the topology achieves a voltage gain of 3, maintains capacitor self-balancing without auxiliary circuits, and reaches a peak efficiency of 97.2% (simulation) and 95.3% (experiment). Moreover, it meets harmonic standards, reduces total harmonic distortion (THD), and outperforms recent single-source designs in terms of accuracy, cost, and control simplicity. This makes the proposed topology highly suitable for grid-connected PV systems, electric vehicle chargers, and compact renewable energy interfaces, with theoretical scalability toward medium- and high-power applications.