10mw多级风力变流器调制策略对功率器件负载的影响

2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2012-06-25 DOI:10.1109/PEDG.2012.6254086

F. Blaabjerg, A. Isidori, F. M. Rossi

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引用次数: 17

摘要

本文主要研究了用于10 MW永磁同步发电机(PMSG)直驱风力发电机组的三电平中性点箝位(3L-NPC)背对背满量程变流器的控制和调制。重点研究了采用连续和不连续PWM调制策略的三电平变换器半导体器件的功率损耗。这方面对变流器的运行有很大的影响，直接影响其效率。因此，在Matlab/Simulink和PLECS环境下开发了仿真平台，分析了不同调制策略下系统的动力学特性，确定了哪些方法可以提高变换器的效率。结果表明，60°不连续PWM调制策略在半导体器件中显示出更小的功率损耗，并将提高变换器的整体效率。

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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Impact of modulation strategies on power devices loading for 10 MW multilevel wind power converter

This paper focuses on the control and modulation of a three-level Neutral Point Clamped (3L-NPC) back-to-back full scale converter for a 10 MW direct-drive wind turbine, equipped with a Permanent Magnet Synchronous Generator (PMSG). Emphasis is oriented towards the investigation of the power losses in the semiconductor devices of three-level converter adopting continuous and discontinuous PWM modulation strategies. This aspect strongly influences the operation of the converter and directly affects its efficiency. Therefore, a simulation platform is developed in Matlab/Simulink and PLECS environment to analyse the dynamics of the system using different kinds of modulation strategies, identifying which methods can improve the converter efficiency. It is concluded that 60° discontinuous PWM modulation strategies show less power losses in the semiconductor devices and will increase the overall efficiency of the converter.

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

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