التفاصيل البيبلوغرافية
| العنوان: |
A Fault-Tolerant LLC Converter With High Reliability and Low Cost for Two-Stage Converters |
| المؤلفون: |
Wang, Weikang, Liu, Yang, Zhang, Peng, Yuan, Yining, Zhao, Jin, Loh, Poh Chiang |
| المصدر: |
IEEE Transactions on Power Electronics; August 2023, Vol. 38 Issue: 8 p9647-9659, 13p |
| مستخلص: |
The popularity of electric vehicles is getting higher, and a large number of dc–dc converters are deployed. LLC converters have witnessed a rapid deployment due to their remarkable merits, often employed as the isolation stage in two-stage converters. However, the contradiction between the increasing demand for reliability and the limited space is becoming prominent. Therefore, ensuring fault tolerance capacity with fewer devices is highly desired. A fault-tolerant LLC converter, which can keep working after multiple unexpected faults, is designed to take over half-bridge LLC converters. The prefault converter behaves like a full-bridge LLC converter and would be reconstructed to retain uninterrupted power output after faults. The reconstructed converter after the first fault behaves like two parallel half-bridge LLC converters and would be further reconstructed into a single half-bridge converter after the second fault. The faults can both be handled, including short-circuit faults and open-circuit faults. The transition processes of reconstruction are extremely short. The spike current during the transition processes is well limited, and the output voltage has a slight fluctuation. The proposed converter could drastically reduce the need for redundancy and has obvious cost advantages. Finally, a prototype is developed to verify the superiority of the proposed converter. |
| قاعدة البيانات: |
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