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Seven-level cascade inverter with asymmetrical DC voltages

机译:直流电压不对称的七级级联逆变器

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摘要

This study proposes a novel seven-level cascade inverter (SLCI) with asymmetrical DC voltages. The proposed SLCI consists of two full-bridge inverters, a DC-DC converter (DDC) and a DC power source. The DC power source is parallel connected to the high-voltage full-bridge inverter (HVFB). The DDC is used to create a DC voltage with half of the DC power source and connect to the low-voltage full-bridge inverter (LVFB). The HVFB is switching at low frequency, and the LVFB is switching at high frequency. The salient points of the proposed SLCI are that only one DC power source is required and no transformer is used. Therefore, the power circuit for the proposed SLCI is simplified. A hardware prototype is established in order to verify the functions of the proposed SLCI. The tested results show that the functions of the proposed SLCI are as expected.
机译:这项研究提出了一种新颖的具有非对称直流电压的七级级联逆变器(SLCI)。拟议的SLCI由两个全桥逆变器,一个DC-DC转换器(DDC)和一个DC电源组成。直流电源并联连接到高压全桥逆变器(HVFB)。 DDC用于产生一半直流电源的直流电压,并连接到低压全桥逆变器(LVFB)。 HVFB处于低频切换状态,而LVFB处于高频切换状态。提出的SLCI的突出之处在于,仅需要一个直流电源,并且不使用任何变压器。因此,简化了所提出的SLCI的电源电路。建立硬件原型以验证所提出的SLCI的功能。测试结果表明,所提出的SLCI的功能符合预期。

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  • 来源
    《Power Electronics, IET》 |2017年第1期|112-119|共8页
  • 作者单位

    National Kaohsiung University of Applied Sciences, Taiwan;

    National Kaohsiung University of Applied Sciences, Taiwan;

    National Kaohsiung Marine University, Taiwan;

    National Kaohsiung University of Applied Sciences, Taiwan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    invertors;

    机译:逆变器;

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