Fault Diagnosis for the Short-Circuit Fault of the Single-phase Five-Level VIENNA Active Rectifier

Linh, Pham Thi Thuy; Bach, Nguyen Ngoc; Binh, Doan Van

doi:10.1007/978-3-030-64719-3_50

Cited by 1 publication

(1 citation statement)

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“…The three-level Power Factor Correction (PFC) VIENNA topology was invented by W. Kolar [34]. As shown in Figure 1, the single-phase five-level VIENNA converter works like a three-level BOOST on each half of the cycle: if the input current is positive, the cells {T 1 , D 1 }, {T 2 , D 5 } form a three-level BOOST with the flying capacitor C f1 and the midpoint return diode D 4 ; if the current is negative, the cells {T 2 , D 2 }, {T 1 , D 6 } form a three-level BOOST with the flying capacitor C f2 and the midpoint return diode D 3 [35]. It allows the input inductance to be divided by 4 and, above all, it allows us to take advantage of serial redundancy, i.e., fault tolerance.…”

Section: Serial Redundancy Of Five-level Vienna Rectifiermentioning

confidence: 99%

Real-Time Fault Detection to Ensure the Safe Operation of the Single-Phase Five-Level VIENNA Rectifier

et al. 2021

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This work aims to explore and evaluate the nonreversible AC/DC five-level structure from the point of view of its operational safety: high electrical security on internal destruction and continuity in operation. It only has low-voltage monotransistor cells (Si and SiC 600 V max) and is intrinsically tolerant to imperfection control and parasites, therefore naturally secure. The design and lab-test of fault monitoring and fault diagnosis with just one voltage sensor of a single-phase five-level VIENNA rectifier were proposed. This real-time diagnostic method allows for a safe stop or corrective control strategy based on the reconfiguration of the modulation. The reconstruction strategy allows for optimization of the current and voltage signals as well as power factor. A continuous post-fault operation can be achieved for critical applications. An experimental prototype 3 kW/230 VAC/800 VDC/32 kHz was created to validate the proposed fault diagnosis method and reconfiguration control method.

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Section: Serial Redundancy Of Five-level Vienna Rectifiermentioning

confidence: 99%