Thermal Loading and Lifetime Estimation for Power Device Considering Mission Profiles in Wind Power Converter
Thermal Loading and Lifetime Estimation for Power Device Considering Mission Profiles in Wind Power Converter
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DOI：
10.1109/tpel.2014.2312335
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发表时间：
2015-02-01
影响因子：
6.7
通讯作者：
Kerekes, Tamas
中科院分区：
文献类型：
--
作者：
Ma, Ke;Liserre, Marco;Kerekes, Tamas
电力电子变换器及其功率半导体作为风力发电系统的关键部件，承受复杂的环境负载，故障率高。因此，正确估计风电变流器的寿命对提高变流器的可靠性和降低风电技术成本至关重要。然而，现有的电力电子变换器寿命估计方法由于没有很好地规定和包括全面的任务剖面，尚不适合风电应用。因此，本文提出了一种相对先进的方法，该方法基于器件的载荷和强度分析，并考虑了功率变换器热行为的不同时间常数。利用已建立的电力设备负荷和寿命估计方法，可以获得更详细的风电变流器寿命相关性能信息。并给出了一些实验结果，验证了动力器件在不同任务剖面下的热性能。
As a key component in the wind turbine system, the power electronic converter and its power semiconductors suffer from complicated power loadings related to environment, and are proven to have high failure rates. Therefore, correct lifetime estimation of wind power converter is crucial for the reliability improvement and also for cost reduction of wind power technology. Unfortunately, the existing lifetime estimation methods for the power electronic converter are not yet suitable in the wind power application, because the comprehensive mission profiles are not well specified and included. Consequently, a relative more advanced approach is proposed in this paper, which is based on the loading and strength analysis of devices and takes into account different time constants of the thermal behaviors in power converter. With the established methods for loading and lifetime estimation for power devices, more detailed information of the lifetime-related performance inwind power converter can be obtained. Some experimental results are also included to validate the thermal behavior of power device under different mission profiles.