摘要详情

ID / 提交时间

72 / 2025-02-12 09:41:33

标题

Ultralocal Model-Free Pulse-Frequency- Modulation of a Bidirectional Resonant DC-DC Converter for V2G System

关键字

Bidirectional CLLLC resonant converter; Pulse frequency modulation; Ultra-local model-free control.

主题及专题

Review group 3

状态

全文录用

作者

LUPING WANG / University of Electronic Science Technology of China

PENG QI / University of Electronic Science Technology of China

TING YU / University of Electronic Science Technology of China

Garcia Cristian / Universidad de Talca Energy Transition Lab, ETL

Jose Rodriguez / Universidad San Sebastian

Bo Long / university of electronic science and technology of china

摘要

CLLLC-type DC-DC converter (CLLLC converter) has garnered significant attention due to its capability to step-up and step-down voltage in both forward and reverse directions, while maintaining consistent operating characteristics, soft switching across the full-load range, and high efficiency. Conventional control methods, such as Proportional-Integral (PI) control, are widely used due to their simple structure and straightforward principles. However, these approaches heavily depend on the model accuracy, which can lead to suboptimal performance in the presence of parameter mismatches and disturbances. To overcome this limitation, this paper proposes a comprehensive control framework for voltage closed-loop regulation and introduces the ultra-local model-free pulse-frequency modulation (UMF-PFM) approach. In this framework, the frequency and output voltage are used as variables in frequency modulation. This enables the identification of the unknown nonlinear term, which encapsulates all relevant structural information. By adjusting the frequency, the controller’s performance remains robust, reducing its dependence on model accuracy. Simulation results validate the effectiveness and correctness of the proposed scheme.