Improved Model of a Standard LLC Resonant Converter Architecture

This paper presents an improved model of the standard LLC resonant converter, whose advantages consist in lower switching losses, a prolonged functioning time at a higher resonant frequency, a wider input voltage range, an improved efficiency and a greater compatibility with other power electronics devices. The proposed design consists in an assembly of electrical and electronic components, integrated circuits and an Arduino type motherboard that generates a command signal with a duty cycle of 50% for the transistors on the circuit. The novel circuit was initially simulated in Multisim 14.1, after which it was implemented in the design environment EAGLE 6.3.0 and Altium to verify that the new layout is without any structural errors. Following the new proposed design architecture in this paper, the novel LLC resonant converter has been simulated, implemented and tested. The PC oscilloscope PicoScope 2206B was the measuring instrument used to test the completed hardware LLC architecture. The obtained results demonstrate that the new proposed architectural model in this paper has better performances than the standard LLC resonant converter.