[Poster Presentation]Nonlinear Optimal Control for 2.5-kW LLC Converts With Pulse Loads

Nonlinear Optimal Control for 2.5-kW LLC Converts With Pulse Loads

ID：151 Submission ID：91 View Protection：ATTENDEE Updated Time：2022-10-13 10:53:05 Hits：1246 Poster Presentation

Start Time：2022-11-04 10:42 （Asia/Shanghai）

Duration：12min

Session：[PS] Poster Session » [PS3] Poster Session 3: Power Electronics Technology and Application

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Abstract

In the case of pulse load, the power supply is constantly switched from no-load to full-load, which would cause the output voltage to fluctuate. In order to reduce the voltage fluctuation and improve the dynamic performance, a nonlinear control method is proposed in this paper. When the voltage change is detected, the control strategy is changed to switch between burst control and PFM control. The proposed control strategy is verified on a 2.5kW LLC prototype. The experimental results demonstrated that the output voltage drops, overshoots and settling time are reduced over the SOTC control method. It shows that the control strategy has a good effect in the pulse load application.

Keywords

Pulse load, Nonlinear optimal control, Voltage fluctuation.

Speaker

Wanjun Liu

Huazhong University of Science and Technology

Submission Author

Wanjun Liu Huazhong University of Science and Technology

Shanxu Duan Huazhong University of Science and Technology

Senwen Luo Huazhong University of Science and Technology

Te Peng Huazhong University of Science and Technology

Yadong Wang Huazhong University of Science and Technology