publication . Article . 2018

Rectifier Current Control for an LLC Resonant Converter Based on a Simplified Linearized Model

Zhijian Fang; Junhua Wang; Shanxu Duan; Liangle Xiao; Guozheng Hu; Qisheng Liu;
Open Access English
  • Published: 01 Mar 2018 Journal: Energies, volume 11, issue 3 (issn: 1996-1073, Copyright policy)
  • Publisher: MDPI AG
Abstract
In this paper, a rectifier current control for an LLC resonant converter is proposed, based on a simplified, two-order, linearized model that adds a rectifier current feedback inner loop to improve dynamic performance. Compared to the traditional large-signal model with seven resonant states, this paper utilizes a rectifier current state to represent the characteristics of the resonant states, simplifying the LLC resonant model from seven orders to two orders. Then, the rectifier current feedback inner loop is proposed to increase the control system damping, improving dynamic performance. The modeling and design methodology for the LLC resonant converter are als...
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free text keywords: LLC resonant converter, linearized model, rectifier current control, extended description function (EDF), General Computer Science, lcsh:Technology, lcsh:T, Control theory, Computer science, Rectifier, Resonant converter, Frequency analysis, law.invention, law, Inner loop, Voltage droop, Control system, Settling time
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