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Multiphase transformer-coupled converter: two different strategies for energy conversion

机译:多相变压器耦合转换器:两种不同的能量转换策略

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摘要

The operation of a multiphase topology, ideally, without energy storage presents the advantage of achieving very high efficiency over a wide load range as well as a fast dynamic response. However, ideal no-energy storage operation also implies a limitation in the regulation capability of the topology, the output voltage can only take discrete values. These features (high efficiency and discrete regulation capability) of the proposed energy conversion strategy enable the topology as a candidate for `DC-DC transformer' applications. The advantages, drawbacks and the operating principle of this concept, implemented with a `closed chain' magnetic structure have been already presented. In this work, the minimum energy storage operation, is applied to two different magnetic structures. These magnetic structures are called `closed chain' and `pyramidal' the main advantage of the `pyramidal' coupling structure is to improve the size of the converter without increasing the operating frequency. Both magnetic structures are analyzed, compared and experimentally implemented.
机译:理想情况下,无能量存储的多相拓扑结构的运行具有在宽负载范围内实现非常高效率以及快速动态响应的优势。但是,理想的无能量存储操作也意味着拓扑的调节能力受到限制,输出电压只能采用离散值。所提出的能量转换策略的这些特征(高效和离散调节能力)使该拓扑成为“ DC-DC变压器”应用的候选者。已经提出了通过“闭链”磁性结构实现的该概念的优点,缺点和操作原理。在这项工作中,将最小的能量存储操作应用于两个不同的磁性结构。这些磁性结构被称为“闭链”和“锥体”,“锥体”耦合结构的主要优点是在不增加工作频率的情况下提高了转换器的尺寸。分析,比较和实验实现了两种磁性结构。

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