Voltage-Sensorless Open-Switch Fault-Tolerant Control of Three-Phase T-Type Rectifier

Sharida A., Bayhan S., Abu-Rub H., FESLİ U.

IEEE Transactions on Power Electronics, cilt.38, sa.12, ss.15365-15376, 2023 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 38 Sayı: 12
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1109/tpel.2023.3312116
  • Dergi Adı: IEEE Transactions on Power Electronics
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Business Source Elite, Business Source Premier, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.15365-15376
  • Anahtar Kelimeler: Fault-Tolerant control, open-switch fault detection, sensorless control, single-loop control, T-Type rectifier
  • Gazi Üniversitesi Adresli: Evet

Özet

This article proposes a grid voltage-sensorless open-switch fault detection and fault-Tolerant control for a three-phase three-level T-Type rectifier. First, the parameters of the rectifier's mathematical model are estimated online. Then, changes in the estimated parameters are observed and analyzed to detect and localize the fault based on the amount of parameters' change and which parameter is changed. When a fault is detected and localized, the fault-Tolerant control switches to an alternative switching function to allow the converter to operate satisfactorily. In addition, a robust control algorithm is proposed to handle all switching functions and topological changes. Unlike cascaded controllers, the proposed controller uses a single-loop control where the current reference generation and current-Tracking processes are done using a single controller. The design of such a controller depends on estimating the relationship between the dc-link voltage, grid voltages, and grid currents. Experimental investigations are conducted to validate the concept and prove its high-quality operation.