Multilevel grid-connected inverter performance under different modulation strategies

2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE) Pub Date : 2011-09-01 DOI:10.1109/ICUEPES.2011.6497741

M. Aware, J. Mane

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引用次数: 1

Abstract

In the distributed generation system, DC-DC converters and inverters are used between different sources and the loads. These inverter operation influences the power quality, stability and reliability of a given electrical network. The improvement in the performance can be achieved by using `Multilevel Inverters' in place of conventional two level inverters. In this paper, 3-level and 5-level inverters topologies are compared under different modulation strategies with two-level inverters. When inverters are connected across the DC link to convert suitable energy available from different sources in to the grid, it is essential to utilize the DC bus to its maximum. The performance indices like THD, DC bus utilization and efficiency of an inverter solely depends on its modulation strategies. This paper also investigates the different carrier based modulation techniques used for the multilevel inverters. The inverter losses can be minimized to make more efficient energy conversion by proper implementation of these control strategies.

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不同调制策略下多级并网逆变器性能研究

在分布式发电系统中，在不同的电源和负载之间使用DC-DC变换器和逆变器。这些逆变器的运行影响着给定电网的电能质量、稳定性和可靠性。性能的提高可以通过使用“多电平逆变器”来代替传统的两电平逆变器来实现。本文比较了两电平逆变器在不同调制策略下的3电平和5电平逆变器拓扑结构。当逆变器通过直流链路连接以将不同来源的合适能量转换到电网中时，必须最大限度地利用直流母线。逆变器的THD、直流母线利用率和效率等性能指标完全取决于其调制策略。本文还研究了用于多电平逆变器的不同载波调制技术。通过适当地实施这些控制策略，可以将逆变器的损耗降至最低，从而提高能量转换的效率。

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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2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)

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