A novel control technique that guarantees a ripple-free output current and voltage of a dc–dc multiphase staked interleaved converter is proposed. The conventional multiphase interleaved converters have been extensively used in various applications. However, ripple cancellation in these converters solely depends on the number of phases and can only be achieved at specific duty cycles. On the other hand, wide-range and ripple-free output are important paramount features for many modern applications. Therefore, the presented converter aims to combine the advantages of both the multiphase interleaved and the stacked converters into a single-unit converter suitable for high-power applications. Ripple-free output current/voltage is always guaranteed regardless of the number of phases and duty cycle values. This feature is accomplished by adding a fractionally-rated phase-leg to the conventional multiphase interleaved converter and modulating it with the proposed control approach. The configurable logic block, a state-of-the-art tool developed by Texas Instruments, is utilized to reduce the hardware size of the entire conversion system while increasing its speed and flexibility. Extensive simulation studies are carried out to confirm the functionality of the proposed control scheme. A laboratory porotype is developed to validate the effectiveness of the proposed control method experimentally. With only a few more components, significant reductions in output ripples are achieved.

中文翻译：

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用于大功率应用的无纹波多相交错堆叠转换器

提出了一种新颖的控制技术，可确保 dc-dc 多相股权交错式转换器的无纹波输出电流和电压。传统的多相交错式转换器已广泛用于各种应用中。然而，这些转换器中的纹波消除仅取决于相数，并且只能在特定的占空比下实现。另一方面，对于许多现代应用而言，宽范围和无纹波输出是最重要的特性。因此，所提出的转换器旨在将多相交错式和堆叠式转换器的优点结合到适用于大功率应用的单单元转换器中。无论相数和占空比值如何，始终保证无纹波输出电流/电压。这个特性是通过向传统的多相交错式转换器添加一个分数额定相腿并用所提出的控制方法对其进行调制来实现的。可配置逻辑块是德州仪器 (TI) 开发的最先进的工具，用于减小整个转换系统的硬件尺寸，同时提高其速度和灵活性。进行了广泛的模拟研究以确认所提出的控制方案的功能。开发了一种实验室孔型，以通过实验验证所提出的控制方法的有效性。只需增加几个组件，就可以显着降低输出纹波。由德州仪器 (TI) 开发的最先进的工具，用于减小整个转换系统的硬件尺寸，同时提高其速度和灵活性。进行了广泛的模拟研究以确认所提出的控制方案的功能。开发了一种实验室孔型，以通过实验验证所提出的控制方法的有效性。只需增加几个组件，就可以显着降低输出纹波。由德州仪器 (TI) 开发的最先进的工具，用于减小整个转换系统的硬件尺寸，同时提高其速度和灵活性。进行了广泛的模拟研究以确认所提出的控制方案的功能。开发了一种实验室孔型，以通过实验验证所提出的控制方法的有效性。只需增加几个组件，就可以显着降低输出纹波。