Multilevel converters for 10 MW Wind Turbines
Multilevel converters for 10 MW Wind Turbines
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发表时间：
2011-09
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通讯作者：
Ke Ma;F. Blaabjerg
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作者：
Ke Ma;F. Blaabjerg
提出、设计并比较了几种适用于10 MW风力发电机的多电平变流器结构，包括直接驱动和单级齿轮箱驱动两种。可靠性是大型风电变流器的重要指标，因此对变流器的可靠性评估主要集中在功率器件的热性能上，而热性能与变流器的寿命和成本密切相关。不同的转换器候选人的损耗和结温的仿真结果，并进行了分析。它的结论是，三电平和五电平H桥变换器拓扑结构都有可能实现改善的热性能相比，三电平中性点箝位变换器拓扑结构在风力发电应用。
Several promising multi-level converter configurations for 10 MW Wind Turbines both with direct drive and one-stage gear box drive using Permanent Magnet Synchronous Generator (PMSG) are proposed, designed and compared. Reliability is a crucial indicator for large scale wind power converters, therefore the evaluations are mainly focused on the power device thermal performances, which are closely related to the life time and cost of the converter. Simulation results of different converter candidates regarding the loss and junction temperature are presented and analyzed. It is concluded that the three-level and five-level H-bridge converter topologies both have potential to achieve improved thermal performances compared to the three-level Neutral-Point-Clamped converter topology in the wind power application.