Design and analysis of solitary AC-AC converter using reduced components for efficient power generation system

K Nandakumar; V Mohan; Faisal Alsaif; S Senthilkumar

doi:10.1038/s41598-024-60230-3

Design and analysis of solitary AC-AC converter using reduced components for efficient power generation system

Sci Rep. 2024 Apr 23;14(1):9323. doi: 10.1038/s41598-024-60230-3.

Authors

K Nandakumar¹, V Mohan², Faisal Alsaif³, S Senthilkumar⁴

Affiliations

¹ Department of Electrical and Electronics Engineering, E.G.S. Pillay Engineering College, Nagapattinam, Tamilnadu, 611002, India. nandakumar071974@gmail.com.
² Department of Electrical and Electronics Engineering, E.G.S. Pillay Engineering College, Nagapattinam, Tamilnadu, 611002, India.
³ Department of Electrical Engineering, College of Engineering, King Saud University, 11421, Riyadh, Saudi Arabia.
⁴ Department of Electronics and Communication Engineering, E.G.S. Pillay Engineering College, Nagapattinam, Tamilnadu, 611002, India.

Abstract

Considering different applications that require varied power and voltage conversion levels between AC grids and AC loads, AC-AC power conversion between AC grids has become an inevitable technology of energy management systems. An isolated converter for performing AC-to-AC transmission is proposed with minimal components for reduced losses and enhanced system efficiency. Single-phase direct buck-boost AC to AC converter with minimum components constituted with two dual IGBT control units (IGBT 1-IGBT 4), inductor (L_f), and capacitor (C_f) is proposed in this work. The MATLAB/Simulink platform is used to provide in-depth analysis of the circuit and components along with the design guidelines, and simulation outcomes of this proposed model. The voltage gains of G = 2.13, power factor of 0.97, and overall efficiency of 98% are achieved in the proposed system with minimum components of 4 switches, 2 conductors, and 1 capacitor and inductor respectively. The obtained results are compared with existing technology to evaluate the proposed system.

Keywords: AC grids; AC–AC converter; Buck-boost converter; Power system.