带脉冲负载的2.5 kw LLC变换器非线性最优控制

2022 IEEE 3rd China International Youth Conference on Electrical Engineering (CIYCEE) Pub Date : 2022-11-03 DOI:10.1109/CIYCEE55749.2022.9959007

W. Liu, S. Duan, Senwen Luo, Te Peng, Yadong Wang

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引用次数: 0

摘要

在脉冲负载的情况下，电源不断地从空载切换到满载，这会导致输出电压波动。为了减小电压波动，提高系统的动态性能，本文提出了一种非线性控制方法。当检测到电压变化时，控制策略在突发控制和PFM控制之间切换。在2.5kW LLC样机上验证了所提出的控制策略。实验结果表明，该方法降低了输出压降、超调量和稳定时间。结果表明，该控制策略在脉冲负载应用中具有良好的效果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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

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.

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2022 IEEE 3rd China International Youth Conference on Electrical Engineering (CIYCEE)

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