The seven-level flying capacitor based ANPC converter for grid intergration of utility-scale PV systems

2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2012-06-25 DOI:10.1109/PEDG.2012.6254062

G. Konstantinou, S. R. Pulikanti, M. Ciobotaru, V. Agelidis, K. Muttaqi

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引用次数: 30

Abstract

The installed capacity of grid connected PV plants has increased significantly over the past few years and is expected to continue its growth over the next decade due to the continuous demand for renewable energy and distributed generation systems. This paper presents a seven-level flying capacitor (FC) based active neutral point clamped (ANPC) converter for the connection of utility-scale PV system to the electricity grid. The multilevel voltage output of the topology provides high quality waveforms while maintaining the operational characteristics of NPC based converters for PV systems. The converter topology together with a method to regulate the FC voltages to their reference values and an optimal third harmonic injection for utilization of the DC-link voltage are presented. Simulation results for the operation of the grid connected converter under steady state and transient operation are provided in order to demonstrate the operation and performance of the topology in grid connected applications.

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基于七电平飞行电容的ANPC变流器用于公用事业规模光伏系统并网

在过去几年中，并网光伏电站的装机容量显著增加，由于对可再生能源和分布式发电系统的持续需求，预计未来十年将继续增长。本文提出了一种基于七电平飞行电容(FC)的有源中性点箝位(ANPC)变换器，用于将公用事业规模的光伏系统接入电网。该拓扑的多电平电压输出提供了高质量的波形，同时保持了基于NPC的光伏系统转换器的运行特性。提出了变换器的拓扑结构，以及将FC电压调节到参考值的方法和利用直流链路电压的最佳三次谐波注入方法。为了验证该拓扑结构在并网应用中的运行和性能，给出了并网变换器稳态和暂态运行的仿真结果。

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

2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)

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