High-Performance Digital Multiloop Control of LLC Resonant Converters for EV Fast Charging With LUT-Based Feedforward and Adaptive Gain

Cittanti, Davide; Gregorio, Matteo; Vico, Enrico; Mandrile, Fabio; Armando, Eric; Bojoi, Radu

doi:10.1109/tia.2022.3178394

Cited by 18 publications

(2 citation statements)

References 36 publications

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“…LLC resonant converters usually adopt PI control [2]- [3]. However, the LLC resonant converter has inherent complexities due to its nonlinear characteristics and time-varying nature.…”

Section: Introductionmentioning

confidence: 99%

Design of Fuzzy Controller for Lithium Battery Formation LLC Converter Based on Sparrow Search Algorithm Optimization

Li,

Xie

2023

J. Phys.: Conf. Ser.

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This paper provides a novel fuzzy PI controller design for LLC resonant converters that make use of the sparrow search algorithm optimization. The LLC resonant converter is a complex nonlinear and time-varying system. As the trend in lithium battery energy conversion systems shifts toward high-power applications, they frequently encounter wide load variations. When employing traditional linear PI controllers of LLC resonant converters, the transient response is slow and fails to adapt effectively to the requirements of wide load changes. In this proposed approach, fuzzy control and PI control are combined to enhance the controller’s flexibility and transient response characteristics. The PI controller parameters are continuously adjusted online, incorporating fuzzy control outputs to improve the controller’s performance. Furthermore, the sparrow search algorithm is applied to optimize the proportional and quantization factors, minimizing the impact of improper parameter selection on the performance of the fuzzy PI controller. This method successfully addresses the challenges posed by the LLC resonant converter, improving adaptability and transient response characteristics in varying load conditions by combining fuzzy control and PI control, online parameter modification, and utilizing the sparrow search algorithm to optimize proportional and quantization factors.

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“…LLC resonant converters usually adopt PI control [2]- [3]. However, the LLC resonant converter has inherent complexities due to its nonlinear characteristics and time-varying nature.…”

Section: Introductionmentioning

confidence: 99%

Design of Fuzzy Controller for Lithium Battery Formation LLC Converter Based on Sparrow Search Algorithm Optimization

Li,

Xie

2023

J. Phys.: Conf. Ser.

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“…A decentralized EV charging control system has proven that the EV can adjust the charging power according to the voltage level of the low-voltage distribution network to reduce the investment cost of the distribution network [26]. Reference [27] proposes a simplified small signal model for the LLC resonant converter, which greatly simplifies the design of the underlying controller.…”

Section: Introductionmentioning

confidence: 99%

Parallel Power Sharing Control of Multi-Controllable Rectifiers in a High-Power DC Fast Charging Station

Xiao,

Cao,

Zhu

et al. 2023

WEVJ

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The increase in demand for the fast charging of electric vehicles (EVs) has promoted research and the application of high-power direct current (DC) fast charging stations, and research on the stability control of charging stations with a parallel structure of multi-controllable rectifier modules is of great significance. Taking into account the dynamic and steady-state performance, the parameters of the dual-loop controller based on virtual impedance control are designed to realize the power sharing of multi-controllable rectifier modules. The constant power load model of EV charging at a constant current is established, and the load capacity of the cascaded system of converters is studied by using the impedance analysis method. The experimental and simulation results verify the effectiveness and correctness of the power sharing control strategy and the cascaded system stability analysis.

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Front-End Current-Fed High Gain Isolated Converter with Flexible Power Point Tracking for Floating PV System

Raizada

Verma

2023

J. Electr. Eng. Technol.

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High-Performance Digital Multiloop Control of LLC Resonant Converters for EV Fast Charging With LUT-Based Feedforward and Adaptive Gain

Cited by 18 publications

References 36 publications

Design of Fuzzy Controller for Lithium Battery Formation LLC Converter Based on Sparrow Search Algorithm Optimization

Design of Fuzzy Controller for Lithium Battery Formation LLC Converter Based on Sparrow Search Algorithm Optimization

Parallel Power Sharing Control of Multi-Controllable Rectifiers in a High-Power DC Fast Charging Station

Front-End Current-Fed High Gain Isolated Converter with Flexible Power Point Tracking for Floating PV System

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