An innovative design approach: optimized super-lift Luo converter for solar energy extraction

This paper proposes a novel design methodology for a super-lift Luo converter to efficiently perform in maximum power point tracking (MPPT) systems, considering the wide range of weather conditions that can affect the converter?s effectiveness and performance. This approach optimizes the design of the super-lift Luo converters? inductance, and capacitance components and output resistance, all of which are essential to the converter?s efficiency and ripple performance. The innovative aspect of the proposed design is to engage the photovoltaic (PV) array?s maximum power point as an optimal power point, which can be recognized based on the weather and the PV array?s characteristics. Optimizing the inductance size selection based on the extracted energy amount allows the MPPT super-lift Luo converter?s ripple quantity and duty cycle to be regulated in compliance with the necessary specifications. The robust performance of the proposed design strategy has been validated experimentally as well as by simulation. The prototype of the well-designed super-lift Luo converter is implemented and tested under uniform solar radiation, different shading situations, and sudden changes in incident radiation. The performance aspects are compared with that of the boost converter designed based on a recent design method. The findings confirm the super-lift Luo converter outperformance in terms of effectiveness, stability, diminished ripples, and readiness for radiation fluctuation. The stability offered by the proposed solution eliminates the need for an input capacitor at the convertor input, allowing a rise in steady PV voltage to a greater level than for the boost at virtually the same cost.