Fault location method of IGBT short-circuit for a grid-tied Neutral-Point-Clamped inverter system

被引：3

作者：

Ma, Mingyao ^{[1
]}

Meng, Xuesong ^{[1
]}

Xiang, Nianwen ^{[1
]}

Wang, Hanyu ^{[1
]}

Zhang, Xing ^{[1
]}

机构：

[1] Hefei Univ Technol, Sch Elect Engn & Automat, Natl & Local Joint Engn Lab Renewable Energy Acce, Hefei, Peoples R China

来源：

MICROELECTRONICS RELIABILITY | 2021年 / 126卷

基金：

中国国家自然科学基金;

关键词：

Neutral-Point-Clamped (NPC) grid-tied inverter; Insulated gate bipolar transistor (IGBT); Short-circuit fault; Fault location; GATE DRIVER; PROTECTION;

D O I：

10.1016/j.microrel.2021.114225

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

For the Neutral-Point-Clamped (NPC) three-level grid-tied inverter, when IGBT short-circuit happens, the hardware protection would be triggered immediately to block all drive signals. After the system shuts down the fault location cannot be learned. This paper proposes a short-circuit fault location method for the internal switches of the NPC topology, based on the current loop analysis after system shuts down. The proposed method does not need to add additional sensors, only by means of the existing monitoring data can be completed fast diagnosis. The experimental results verify the feasibility and effectiveness of the proposed fault location method.

引用

页数：8

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