Fault-Tolerant Operation of DFIG-WT With Four-Switch Three-Phase Grid-Side Converter by Using Simplified SVPWM Technique and Compensation Schemes

Ni, Kai; Hu, Yihua; Chen, Guipeng; Gan, Chun; Li, Xinhua

doi:10.1109/tia.2018.2866483

Cited by 21 publications

(10 citation statements)

References 28 publications

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“…If contingency such as open-circuit fault occurs to the low-pressure channel or highpressure channel rectifiers (LP rectifier, i.e., LPR, and HP rectifier, i.e., HPR) in Fig. 1 due to gate-driver fault or cycling high currents, the faulty rectifier needs to be stopped and disconnected from the dc grid [16]. However, the associated generators cannot be shut down suddenly as they are connected to the aircraft engine, which has a significant inertia.…”

Section: Introductionmentioning

confidence: 99%

Fault Tolerant Control of Advanced Power Generation Center for More-Electric Aircraft Applications

Lang

Yang

Wang

et al. 2022

IEEE Trans. Transp. Electrific.

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This paper presents a control scheme for a recently reported aircraft advanced power generation center (APGC) during postfault operation conditions. Within the APGC, two electrical generators extract power from two separate engine shafts and supply electrical power to a common HVDC bus through their dedicated main AC/DC power converters. An extra back-to-back (BTB) converter is also used to connect the ac terminals of the two generators. This architecture provides merits of fault tolerance capabilities of the APGC. In the case of main AC/DC power converter failure, the system can be reconfigured and the BTB converter provides an extra power flow path from the generators to the HVDC bus. This ensures electrical power generation capabilities onboard. The paper discusses in detail the control of the APGC under fault conditions with one main AC/DC converter failure. A seamless transition scheme from normal operation to postfault conditions is proposed using a voltage command initialization technique within the BTB converter. Both experimental and simulation results have verified the fault tolerance improvement and control performances of the APGC.

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Section: Introductionmentioning

confidence: 99%

Fault Tolerant Control of Advanced Power Generation Center for More-Electric Aircraft Applications

Lang

Yang

Wang

et al. 2022

IEEE Trans. Transp. Electrific.

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“…This solution requires only one additional bidirectional switch per phase, making it a very cost-effective solution. This solution has been widely used in both 2-level [37,38,[40][41][42][43][44][45][46][63][64][65][66] and NPC [29][30][31][47][48][49][50][51][52][53][54][55] converters. A similar approach has been proposed for 2-level converters in [61,62], connecting the faulty phase to an auxiliary capacitor instead of the DC bus midpoint.…”

Section: Introductionmentioning

confidence: 99%

“…One solution proposed to avoid a post-fault derating of the converter is to increase the DC bus voltage after the fault [31,[48][49][50]61,65]. This ensures that the initial modulation area is kept in post-fault scenarios, enabling the system to retain full-rated capacity.…”

Section: Introductionmentioning

confidence: 99%

Fault Analysis and Non-Redundant Fault Tolerance in 3-Level Double Conversion UPS Systems Using Finite-Control-Set Model Predictive Control

Caseiro

Mendes

2021

Energies

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Fault-tolerance is critical in power electronics, especially in Uninterruptible Power Supplies, given their role in protecting critical loads. Hence, it is crucial to develop fault-tolerant techniques to improve the resilience of these systems. This paper proposes a non-redundant fault-tolerant double conversion uninterruptible power supply based on 3-level converters. The proposed solution can correct open-circuit faults in all semiconductors (IGBTs and diodes) of all converters of the system (including the DC-DC converter), ensuring full-rated post-fault operation. This technique leverages the versatility of Finite-Control-Set Model Predictive Control to implement highly specific fault correction. This type of control enables a conditional exclusion of the switching states affected by each fault, allowing the converter to avoid these states when the fault compromises their output but still use them in all other conditions. Three main types of corrective actions are used: predictive controller adaptations, hardware reconfiguration, and DC bus voltage adjustment. However, highly differentiated corrective actions are taken depending on the fault type and location, maximizing post-fault performance in each case. Faults can be corrected simultaneously in all converters, as well as some combinations of multiple faults in the same converter. Experimental results are presented demonstrating the performance of the proposed solution.

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“…For example, in [11], the duty cycles of the vectors are calculated by means of simple equations, which, although gives rise to a simple modulation, make it unnecessary to find the sector where the voltage reference is located. The modulation proposed in [12] is simple to implement and uses the smallest vectors to generate the zero vector, which improves the performance. In addition, a DC voltage offset suppression method is proposed, which maximise the utilisation of the DC‐bus voltage.…”

Section: Introductionmentioning

confidence: 99%

Robust control of a floating OWC WEC under open‐switch fault condition in one or in both VSCs

Ramirez

Blanco

Zarei

et al. 2020

IET Renewable Power Generation

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The operation and maintenance activity of offshore wind turbines (WTs) increases the cost of the generated energy. Although significant efforts have been made to improve the reliability of the mechanical subassemblies, electrical and electronic subassemblies fail more frequently, causing undesirable downtimes and loss of revenues. Since offshore WTs and wave energy converters (WECs) share the electrical and electronic subassemblies, the reliability of WECs is expected to be affected by the same causes. This study presents a robust model predictive control for a WEC consisting of an oscillating water column (OWC) installed in a point absorber. The control system is capable of dealing with open switch faults in one or two insulatedgate bipolar transistors of the same arm in any of the voltage source converters (VSCs), or even in both VSCs at the same time. The system allows the OWC WEC to generate energy, although under certain restrictions, thereby reducing the urgency of repair and loss of revenues. The performance of the proposed approach is tested for several cases of open switch faults, experimentally in the laboratory using an OWC WEC emulator.

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Fault-Tolerant Operation of DFIG-WT With Four-Switch Three-Phase Grid-Side Converter by Using Simplified SVPWM Technique and Compensation Schemes

Cited by 21 publications

References 28 publications

Fault Tolerant Control of Advanced Power Generation Center for More-Electric Aircraft Applications

Fault Tolerant Control of Advanced Power Generation Center for More-Electric Aircraft Applications

Fault Analysis and Non-Redundant Fault Tolerance in 3-Level Double Conversion UPS Systems Using Finite-Control-Set Model Predictive Control

Robust control of a floating OWC WEC under open‐switch fault condition in one or in both VSCs

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