Performance Evaluation of Solar-PV-Based Non-Isolated Switched-Inductor and Switched-Capacitor High-Step-Up Cuk Converter

Abstract

Solar photovoltaic (PV) is the most promising renewable energy source available on Earth. Three topologies based on a switched-inductor capacitor and non-isolated high-step-up Cuk converter have been proposed for solar PV. These topologies of the Cuk converter have higher boosting ability than conventional Cuk and boost converters and can reduce the voltage stress of the main switch. A small voltage rating and on-state resistance can give higher efficiency of the converter. The voltage boosting ability of all three topologies was compared to each other and with a conventional Cuk converter. The boosting capability of the third converter was 11 times at 0.75 duty cycle with a solar PV source. These converters do not use a coupled inductor and transformer, which leads to less volume, reducing coupling/core saturation loss, and thus the cost of the converter. A solar PV system of 12 volts was used for boosting with these converters for analysis of the feasibility of use with renewables. The three topologies of the switched-inductor and switched-capacitor (SLSC) Cuk converter were designed and simulated in MATLAB/Simulink to evaluate their effectiveness.

Modernisation of DC-DC converter topologies for solar energy harvesting applications: A review

“…A negative capacitive output is characteristic of a Cuk converter, much like that of a buck-boost converter [28], [31], [116], [138], [147], [319], [326], [327], [341], [346]- [351]. The Cuk converter is unusual from other comparable devices in that it stores energy and transmits power using a capacitor rather than an inductor.…”

“…The efficiency of the revised Cuk converter has substantially improved. This converter is renowned for its good bidirectional performance in managing current and voltage [116]. Furthermore, many forms of traditional Cuk converters have been published in the literature [147], [308], [326], [340], [352], the modified Cuk converter having a higher efficiency level for controlling voltage and current in bidirectional operation [319].…”

An Extensive Critique on Electric Vehicle Components and Charging Systems

“…e CC-based charging system was developed by Deshmukh et al [9] for charging the batteries of EVs. In [87], the authors used a switched inductor in CC for charging the batteries of EVs. In [88], the CC was implemented with the PI-based controller to activate the EV's motor.…”

The Combined Effect of Current Boosting and Power Loss on Photovoltaic Arrays under Partial Shading Conditions

“…This results in inconsistent module characteristics [11]. Partial Shading Conditions (PSCs) occur when some modules in a PV array are shaded by trees and buildings and this results in the reduction of the voltage and current of the afflicted panel [12][13][14][15]. The panel that generates the least amount of electricity will act as an electrical load drawing energy from the system's other modules [14,15], resulting in a decrease in the overall power output.…”