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首页> 外文期刊>Journal of power electronics >A Digital Self-Sustained Phase Shift Modulation Control Strategy for Full-Bridge LLC Resonant Converters
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A Digital Self-Sustained Phase Shift Modulation Control Strategy for Full-Bridge LLC Resonant Converters

机译:全桥LLC谐振转换器的数字自持相移调制控制策略

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摘要

A digital self-sustained phase shift modulation (DSSPSM) strategy that allows for good soft switching and dynamic response performance in the presence of step variations is presented in this paper. The working principle, soft switching characteristics, and voltage gain formulae of a LLC converter with DSSPSM have been provided separately. Furthermore, the method for realizing DSSPSM is proposed. Specifically, some key components of the proposed DSSPSM are carefully investigated, including a parameter variation analysis, the start-up process, and the zero-crossing capture of the resonant current. The simulation and experiment results verify the feasibility of the proposed control method. It is observed that the zero voltage switching of the switches and the zero current switching of the rectifier diodes can be easily realized in presence of step load variations.
机译:本文提出了一种数字自持相移调制(DSSPSM)策略,该策略可在存在阶跃变化的情况下实现良好的软切换和动态响应性能。分别提供了带有DSSPSM的LLC转换器的工作原理,软开关特性和电压增益公式。此外,提出了一种实现DSSPSM的方法。具体来说,我们仔细研究了所提出的DSSPSM的一些关键组件,包括参数变化分析,启动过程以及谐振电流的过零捕获。仿真和实验结果验证了该控制方法的可行性。观察到,在存在阶跃负载变化的情况下,可以容易地实现开关的零电压开关和整流二极管的零电流开关。

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