Authors:
Subbulakshmy Ramamurthi, P. Velmurugan, S. Manivannan, Shobana Devendiren, Mika Sillanpää
Addresses:
Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Ramapuram, Chennai, Tamil Nadu, India. Department of Electrical and Electronics Engineering, St. Joseph’s College of Engineering, Chennai, Tamil Nadu, India. Department of Electrical Engineering, Panimalar Engineering College, Chennai, Tamil Nadu, India. Department of Chemical Engineering Technology, University of Johannesburg, Gauteng, South Africa.
Abstract:
With an increasing demand for high-gain DC-DC conversion from electric vehicles and renewable energies, stable control mechanisms and topologies are needed. A Quadratic Boost Converter (QBC) was implemented here using a passive self-lift circuit as an experiment to achieve an ultra-high voltage conversion ratio without high duty cycles or the added complexity of coupled inductors. The most demanding task of such a high-order, non-linear topological type is dynamic voltage regulation. In this paper, a thorough comparative analysis of two sophisticated methods of control of this type: the non-linear Sliding Mode Control (SMC) and fractional-calculus-based Fractional-Order PID (FOPID) controller is discussed. The comparison is made in the time domain on a high-fidelity simulation model. Start-up overshoot, settling time, and rejection rate of the said critical performance parameters for large line and load disturbances are strictly tested. The result is a compromise in performance: the FOPID controller response is extremely smooth, with minimal start-up overshoot, and thus optimized for sensitive loads. Otherwise, the SMC is extremely strong and has extremely short transient settling times, making its well-suited to high parameter uncertainty and large disturbance conditions. The above discussion provides a simple process for selecting an effective advanced control scheme based on the proper application requirements for the proposed new converter topology.
Keywords: High Step-Up Converter; Quadratic Boost Converter (QBC); Self-Lift Circuit; Sliding Mode Control (SMC); Fractional-Order PID (FOPID); DC-DC Conversion; Energy Systems.
Received on: 28/08/2024, Revised on: 25/10/2024, Accepted on: 15/01/2025, Published on: 12/09/2025
DOI: 10.64091/ATIAS.2025.000245
AVE Trends in Intelligent Applied Sciences, 2025 Vol. 1 No. 3 , Pages: 152-160