Article
A MULTILEVEL CONVERTER WITH TRIPLE VOLTAGE BOOST FOR RENEWABLE ENERGY SOURCES
DOI:
https://doi.org/10.47344/hxfy6e54Keywords:
amplifier inverter; multi-level inverters (MLI); renewable energy use; self-balancing voltage; variable capacitor (SC)Abstract
A compact, single-supply, multilevel inverter (SC-MLI) topology based on a switched-capacitor structure for high-efficiency power conversion is proposed. The overall goal of the study is to develop a three-stage inverter that increases the voltage by a factor of 13 while simultaneously reducing the number of required components. As a result, the proposed design reduces circuit complexity and cost while also increasing reliability.
The inverter’s performance was evaluated using theoretical analysis, MATLAB/Simulink and PLECS simulations, and experimental verification. In addition, tests using a natural capacitor without a control circuit or with resistive and inductive loads confirmed the stable generation of multi-level voltage and voltage balance with additional sensors. For example, when operating in sinusoidal pulse-width modulation (SPWM) and low-level control (NLC) modes, the inverter maintained low harmonic distortion and a uniform current waveform. As a result, the system achieved a maximum efficiency of 97.2 % in modeling and 95.3 % experimentally. The results of this study confirm the Recommended Level 13 SC-MLI compliance for renewable energy integration and other advanced power electronics applications.
