RELIABILITY ANALYSIS OF IGBT FOR PV INVERTER WITH REACTIVE POWER OUTPUT CAPABILITY

Zhang Bo; Gao Yuan; Li Tiecheng; Hu Xuekai; Wang Lei

doi:10.19912/j.0254-0096.tynxb.2023-0198

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (6) : 296-302. DOI: 10.19912/j.0254-0096.tynxb.2023-0198

RELIABILITY ANALYSIS OF IGBT FOR PV INVERTER WITH REACTIVE POWER OUTPUT CAPABILITY

Zhang Bo¹, Gao Yuan², Li Tiecheng³, Hu Xuekai³, Wang Lei³

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Abstract

In this paper, a data-driven IGBT reliability evaluation method is proposed to quantitatively evaluate IGBT reliability in PV inverters according to active power, reactive power, solar irradiance and ambient temperature. At the same time, LightGBM machine learning model is used to replace the traditional thermoelectric coupling model, which effectively improves the calculation efficiency of IGBT junction temperature and reduces the dependence of IGBT reliability evaluation results on IGBT model parameters. Finally, based on IEEE 33 node distribution system, the reliability of IGBT PV inverters participating in reactive power regulation of distribution network was evaluated quantitatively.

Key words

solar energy / distribution network / photovoltaic inverter / reliability analysis / LightGBM model / junction temperature

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Zhang Bo, Gao Yuan, Li Tiecheng, Hu Xuekai, Wang Lei. RELIABILITY ANALYSIS OF IGBT FOR PV INVERTER WITH REACTIVE POWER OUTPUT CAPABILITY[J]. Acta Energiae Solaris Sinica. 2024, 45(6): 296-302 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0198

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