A Review: Multilevel Hybrid Ultra-Boost Converter Topologies for PV Solar Applications

2019 2nd International Conference on Power Energy, Environment and Intelligent Control (PEEIC) Pub Date : 2019-10-01 DOI:10.1109/PEEIC47157.2019.8976709

Mona Chorishiya, D. K. Palwalia

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引用次数: 1

Abstract

Multilevel hybrid transformer-less ultra-boost converters are playing a significant role in high power solar PV applications. Performance of multilevel hybrid ultra-boost converter is superior than the traditional DC to DC boost converter. Multilevel ultra-boost converter (MUBC) with the switched coupled inductors based on pulse width modulation (PWM) technique having high efficiency. It is basically DC to DC switched capacitors ultra-boost converters combinedly provide the desired balanced output voltage($V_{out}$) using the one driven-switch(S), one switched-inductor(L) with [2(n)-1] diodes(D1and D2) and [2(n)-1] capacitors(C) for an (n)x MUBC. It is suggested to be used as a DC-link in the PV solar application with the multilevel inverters where controlled output voltage levels are mandatory with the unidirectional and the self-balancing current flow; each device stops one voltage level to achieve high voltages ultra-boost converters with low voltage device. In this paper the comprehensive analysis of multilevel hybrid transformer less ultra-boost converter topology has been done. This topology provides large duty ratio (D) without extreme duty cycle, continuous input current, high switching frequency, lower harmonics, higher efficiency, large output voltage and lower electro-magnetic interference, compact size.

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光伏太阳能应用的多电平混合超升压变换器拓扑综述

多电平混合无变压器超升压变换器在大功率太阳能光伏应用中发挥着重要作用。多电平混合超升压变换器的性能优于传统的DC - DC升压变换器。基于脉宽调制(PWM)技术的开关耦合电感多电平超升压变换器(MUBC)具有高效率。它基本上是DC到DC切换电容器-超升压变换器结合使用一个驱动开关(S)，一个开关电感(L)与[2(n)-1]二极管(d1和D2)和[2(n)-1]电容器(C)为一个(n)x MUBC提供所需的平衡输出电压($V_{out}$)。建议在光伏太阳能应用的多电平逆变器中作为直流链路使用，其中控制输出电压电平是强制性的，具有单向和自平衡电流;每个器件停止一个电压电平，以实现高压超升压变换器与低压器件。本文对多电平混合无变压器超升压变换器拓扑结构进行了综合分析。该拓扑结构具有无极端占空比的大占空比(D)、连续输入电流、高开关频率、低谐波、高效率、大输出电压和低电磁干扰、体积小等优点。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2019 2nd International Conference on Power Energy, Environment and Intelligent Control (PEEIC)

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