用于谐振变换器的有源倍流整流器的动态建模

Renita Pinto, E.F.C. Grabowsky, M. Heldwein
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引用次数: 0

摘要

倍流整流器通常在隔离dc-dc转换器的输出级只使用两个二极管,即单象限无源开关,因此不能主动定义负载端口的电压。有源倍流整流器(ACD)使用电流单向二象限开关,以便为可能需要它的应用提供这种控制。然而,关于能够有效预测这种有源整流器动力学的模型的文献是缺乏的。在这里,ACD是基于其谐振操作的状态空间形式的动态相量来建模的。所开发的模型显示了开关相位如何影响整流器电流和电压,并为设计控制回路提供了重要工具。LC谐振槽是ACD的典型应用。但是,该过程也可以应用于其他类型的拓扑。设计和实验结果证实了模型的正确性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Dynamic Modeling of an Active Current Doubler Rectifier Applied to Resonant Converters
A current doubler rectifier typically uses only two diodes, i.e. single quadrant passive switches, at the output stage of isolated dc-dc converters and, thus, is not able to actively define the voltage at the load port. The active current doubler rectifier (ACD) uses current unidirectional two-quadrant switches in order to provide such control for applications that might require it. However, literature on the models that are able to effectively predict the dynamics of such active rectifiers is lacking. This, the ACD is modeled here based on dynamic phasors in a state space form for its resonant operation. The developed models show how the switching phase affects this rectifier currents and voltages, and provides an important tool to design control loops. An LC resonant tank is exemplarily used with the ACD. However, the procedure can be applied to other types of topologies. Design and exnerimental results corroborate the modeling.
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