Nine-level cascaded multilevel inverter for PV systems

This paper presents an improved Cascaded Multilevel Inverter (CMLI) based on a highly efficient and reliable configuration for the minimization of the leakage current. The suggested technique also exhibits minimal switching and conduction losses in addition to having fewer switches. The proposed topology using the specified, high-frequency voltage is decreased by the Pulse Width Modulation (PWM) approach, voltage changes at the terminal and commonmode levels. Keeping away from high-frequency voltage changes results in the reduction in leakage current and a reduction in the size EMI filter. In addition, the continuation of the CMLI and the PWM method for 2m+1 levels is also shown, where m denotes quantity, solar energy, photovoltaic (PV) sources. The suggested PWM to cover all 2m+1, only one carrier wave is required levels of performance. Total Harmonic Distortion (THD) is the planned CMLI network current that meets the specifications of the Institute of Electrical and Electronics Engineers (IEEE) 1547 standard. The paper also includes a comparison of the proposed CMLI topology and the existing multilevel inverter (MLI) PV topology. The article presents the full features of the common-mode and photovoltaic voltage terminal analysis proposed by CMLI using switching function ideas, simulations, and experimental results.