Precise loss evaluation method of CHBMC with reduced switching strategy for direct integration with medium voltage smart microgrids

2016 9th International Conference on Electrical and Computer Engineering (ICECE) Pub Date : 2016-12-01 DOI:10.1109/ICECE.2016.7853856

Md. Mazharul Islam, A. M. Mahfuz-Ur-Rahman, Md. Rabiul Islam

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引用次数: 3

Abstract

Due to the accelerating crisis of the worldwide established fossil fuel and atomic energy system and the impact of green house gas emission led to the development of renewable generation units with medium voltage smart micro grids (e.g., 6– 36 KV). The cascaded H-bridge multilevel (CHBM) converters are considered as strong competitors for step-up transformer less direct grid integration. But due to the limited space of installation, high cost of failure and for reliable operation of converters, the power losses in semiconductor devices are required to be designed, analyzed and minimized. In this paper an improved precise loss calculation method is proposed and this method is utilised to calculate the power losses in a 28.6 MVA, 11KV, optimum level with reduced switching modes using bus-clamping pulse width modulation (BCPWM) for CHBM converter. All the analysis are performed in MATLAB environment with reduced harmonic distortion as well as switching losses.

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与中压智能微电网直接集成的减容CHBMC损耗精确评估方法

由于世界范围内已建立的化石燃料和原子能系统的危机加速，以及温室气体排放的影响，导致了具有中压智能微电网(如6 - 36kv)的可再生能源发电机组的发展。级联h桥多电平变流器被认为是升压变压器非直接并网的有力竞争者。但由于安装空间有限、故障成本高以及转换器的可靠运行，需要对半导体器件中的功率损耗进行设计、分析和最小化。本文提出了一种改进的精确损耗计算方法，并利用该方法计算了采用母线箝位脉宽调制(BCPWM)降低开关模式的CHBM变换器在28.6 MVA、11KV最佳电平下的功率损耗。所有的分析都是在MATLAB环境下进行的，减少了谐波失真和开关损耗。

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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2016 9th International Conference on Electrical and Computer Engineering (ICECE)

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