A Sensorless Open-Circuit Fault Identification Method for Interleaved Boost Converter

被引:1
|
作者
Li, Chuanfeng [1 ]
Yu, Yang [1 ]
Yang, Zhiming [1 ]
Wang, Wang [1 ]
Peng, Xiyuan [1 ]
机构
[1] Harbin Inst Technol, Sch Elect & Informat Engn, Harbin 150080, Peoples R China
基金
中国国家自然科学基金;
关键词
Fault detection; fault identification; open-circuit fault (OCF); output voltage; sensorless; DIAGNOSIS METHOD; RELIABILITY;
D O I
10.1109/TIM.2024.3425499
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
The interleaved dc-dc converter is widely used for its low current ripple and voltage ripple, alongside high-energy conversion efficiency. However, open-circuit faults (OCFs) will increase current and voltage ripple while reducing energy conversion efficiency. Therefore, the OCF identification is very significant. Most current fault diagnosis methods typically depend on current sensors to obtain current information, elevating diagnostic costs. Consequently, this article introduces a cost effective, sensorless OCF identification method using the step change in output voltage at specific sampling moments in the interleaved boost converter (IBC). It is proved that the ratio of output voltage step value serves as an indicator for the phase current relationships. Therefore, the output voltage is only used to locate the OCF, avoiding any current sensor. Both simulation and hardware experiments verify the effectiveness and practicality of the proposed method.
引用
收藏
页数:8
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