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Analysis and Loss Estimation of Different Multilevel DC-DC Converter Modules and Different Proposed Multilevel DC-DC Converter Systems.

机译：不同多级DC-DC转换器模块和建议的多级DC-DC转换器系统的分析和损耗估计。

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摘要

A multilevel DC-DC converter converts a DC source from one voltage level to another level. DC-DC converters are important in portable devices like cell phones, laptops, etc., as well as in applications such as electric vehicles, which have sub-circuits operating at voltages different from the supply voltage. In this thesis, two new multilevel DC-DC converter system modules: one-to-many topology and cascaded topology are presented. Comparisons are made for the proposed multilevel DC-DC converter systems along with the existing multilevel DC-DC converter system. The comparisons are made in the terms of range of the output voltage, maximum output voltage, number of steps of output voltages, number of switches operated for any given output voltage, and the ripples in the output voltage Among all the proposed converter system topologies, cascaded topology with even number of modules turned out to be more efficient in terms of maximum output voltage and number of steps of output voltages.;Two new different multilevel DC-DC converter modules are presented in this thesis. However only one of them facilitates the implementation of cascaded topology of DC-DC converters and decrease the transition currents, while other just decrease the transition currents. Comparisons are based on different losses during the circuit operation, ripple voltages, and efficiency. One of the proposed converter modules limits the transient currents significantly over existing converters during the output voltage transition in multilevel DC-DC converter topologies for a given transition time. Though the efficiencies of the proposed modules are slightly less (< 1%) than the existing converter modules they facilitate the implementation of cascading converters. Also the reduction in the transition currents can potentially increase the life of the converter modules.
机译：多电平DC-DC转换器将DC源从一个电压电平转换为另一电平。 DC-DC转换器在便携式设备（如手机，笔记本电脑等）以及电动车等应用中很重要，这些应用的子电路工作电压与电源电压不同。本文提出了两个新的多电平DC-DC转换器系统模块：一对多拓扑和级联拓扑。对建议的多级DC-DC转换器系统与现有的多级DC-DC转换器系统进行了比较。在所有建议的转换器系统拓扑中，根据输出电压的范围，最大输出电压，输出电压的阶数，在任何给定输出电压下操作的开关的数量以及输出电压的纹波方面进行了比较。在最大输出电压和输出电压阶跃数方面，具有偶数个模块的级联拓扑被证明是更有效的。；本文提出了两个新的不同的多电平DC-DC转换器模块。然而，它们中只有一个有助于实现DC-DC转换器的级联拓扑并降低过渡电流，而其他仅降低过渡电流。比较是基于电路工作期间的不同损耗，纹波电压和效率。在给定的转换时间内，在多电平DC-DC转换器拓扑中的输出电压转换期间，所提出的转换器模块之一极大地限制了现有转换器上的瞬态电流。尽管所提出的模块的效率比现有的转换器模块略低（<1％），但它们有助于级联转换器的实现。同样，过渡电流的减小可能会增加转换器模块的寿命。

著录项

  • 作者

    Patil, Sandeep.;

  • 作者单位

    The University of Toledo.;

  • 授予单位 The University of Toledo.;
  • 学科 Electrical engineering.
  • 学位 M.S.L.
  • 年度 2014
  • 页码 94 p.
  • 总页数 94
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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