A Modular Hybrid Switched-Capacitor Cross-Switched Asymmetrical Multilevel Inverter With Low-Stress Voltage and High-Power Quality Utilizing the Nearest Level Control Switching Technique

As time passes, multilevel inverters (MLIs) have gained more popularity due to advanced structures in voltage conversion from dc to ac. The high-quality output voltage, modularity, and boosting capability are the advantages of these converters, which widely increase their applications in industry and power systems. This article proposes a modular hybrid switched-capacitor cross-switched asymmetrical MLI. The proposed MLI has a low total standing voltage (TSV) on switches, and it reduces MLI's costs by altering its cost function. The proposed MLI is investigated in one module with 39 output voltage levels and compared with the state-of-the-art structures recently published in terms of TSV and the number of power electronic elements to illustrate its merit over them. The proposed converter is switched by the nearest level control, a simple yet efficient switching technique that achieves a low total harmonic distortion of the output voltage and low-switching frequency. After a detailed analysis, the proposed MLI is simulated in MATLAB and implemented as a prototype for conducting experiments. Simulation-based and experimental results reveal the feasibility and practicality of the proposed MLI.