Asymmetric power device rating selection for even temperature distribution in NPC inverter
作者： Ui-Min Choi , Frede Blaabjerg
DOI: 10.1109/ECCE.2017.8096727
关键词: Electrical impedance 、 Electronic engineering 、 Thermal resistance 、 Electrical engineering 、 Power module 、 Power semiconductor device 、 Inverter 、 Power rating 、 Maximum power point tracking 、 Power (physics) 、 Engineering
摘要: A major drawback of the NPC inverter is an unequal power loss distribution among devices which leads to temperature stress them. Therefore, certain experience higher stress, main cause device module failure and thus both rating lifetime are limited by most stressed devices. In this paper, asymmetric selection method for proposed in order balance lifetimes The thermal analyzed based on 30 kW as a case study. Analytical impedance models depending chip size derived. Finally, using these models, junction temperatures discussed proper even selected.
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