Browsing by Author "Ayapbergen Zh."

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    A MULTILEVEL CONVERTER WITH TRIPLE VOLTAGE BOOST FOR RENEWABLE ENERGY SOURCES
    (SDU University, 2025) Taissariyeva K.; Ayapbergen Zh.
    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 pulsewidth 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.