Relevant bibliographies by topics / Fault tolerance (Engineering) ; DC-to-DC converters

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  2. Dissertations / Theses
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  4. Conference papers

Academic literature on the topic 'Fault tolerance (Engineering) ; DC-to-DC converters'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Fault tolerance (Engineering) ; DC-to-DC converters"

1

Kumar, Geddam Kiran, and Devaraj Elangovan. "Review on fault‐diagnosis and fault‐tolerance for DC–DC converters." IET Power Electronics 13, no. 1 (2020): 1–13. http://dx.doi.org/10.1049/iet-pel.2019.0672.

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Caseiro, Luís, and André Mendes. "Fault Analysis and Non-Redundant Fault Tolerance in 3-Level Double Conversion UPS Systems Using Finite-Control-Set Model Predictive Control." Energies 14, no. 8 (2021): 2210. http://dx.doi.org/10.3390/en14082210.

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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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Ravyts, Simon, Mauricio Dalla Vecchia, Giel Van den Broeck, and Johan Driesen. "Review on Building-Integrated Photovoltaics Electrical System Requirements and Module-Integrated Converter Recommendations." Energies 12, no. 8 (2019): 1532. http://dx.doi.org/10.3390/en12081532.

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Since building-integrated photovoltaic (BIPV) modules are typically installed during, not after, the construction phase, BIPVs have a profound impact compared to conventional building-applied photovoltaics on the electrical installation and construction planning of a building. As the cost of BIPV modules decreases over time, the impact of electrical system architecture and converters will become more prevalent in the overall cost of the system. This manuscript provides an overview of potential BIPV electrical architectures. System-level criteria for BIPV installations are established, thus providing a reference framework to compare electrical architectures. To achieve modularity and to minimize engineering costs, module-level DC/DC converters preinstalled in the BIPV module turned out to be the best solution. The second part of this paper establishes converter-level requirements, derived and related to the BIPV system. These include measures to increase the converter fault tolerance for extended availability and to ensure essential safety features.
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Aguayo-Alquicira, Jesus, Iván Vásquez-Libreros, Susana Estefany De Léon-Aldaco, et al. "Reconfiguration Strategy for Fault Tolerance in a Cascaded Multilevel Inverter Using a Z-Source Converter." Electronics 10, no. 5 (2021): 574. http://dx.doi.org/10.3390/electronics10050574.

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The cascade multilevel inverters are widely used in industrial manufacturing processes for DC-AC conversion. Therefore, the reliability and efficiency improvement, optimized control, and fault-tolerant strategies are areas of interest for researchers. The fault tolerance strategies applied to cascade multilevel inverters are classified as material redundancy and analytical redundancy. This paper presents the use of the Z-source converter as a fault reconfiguration method applied to a cascade multilevel inverter. On the one hand, the proposed approach has the characteristic of combining the use of material redundancy (modifying the output voltage by changing the Z-source operation), and on the other hand, it has the use of analytical redundancy (modifying the switching sequence of the multilevel inverter, changing from symmetrical to asymmetrical operation mode). This approach has been validated by experimental results of the system under fault-free conditions and employing the Z-source converter as the main fault reconfiguration element. The proposed fault reconfiguration strategy allows the cascaded multilevel inverter to continue to operate even in the presence of a fault by having continuous operation.
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Benali, Abdelkrim, Mounir Khiat, and Mouloud Denai. "Voltage profile and power quality improvement in photovoltaic farms integrated medium voltage grid using dynamic voltage restorer." International Journal of Power Electronics and Drive Systems (IJPEDS) 11, no. 3 (2020): 1481. http://dx.doi.org/10.11591/ijpeds.v11.i3.pp1481-1490.

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<p class="Abstract">In this paper, we have presented a simulation study to analyze the power quality of three phases medium voltage grid connected with distribution generation (DG) such as photovoltaic (PV) farms and its control schemes. The system uses two-stage energy conversion topology composed of a DC to DC boost converter for the extraction of maximum power available from the solar PV system based on incremental inductance technique and a three-level voltage source inverter (VSI) to connect PV farm to the power grid. To maintain the grid voltage and frequency within tolerance following disturbances such as voltage swells and sags, a fuzzy logic-based Dynamic Voltage Restorer is proposed. The role of the DVR is to protect critical loads from disturbances coming from the network. Different fault conditions scenarios are tested and the results such as voltage stability, real and reactive powers, current and power factor at the point of common coupling (PCC) are compared with and without the DVR system.</p>
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Gruson, François, Amine Tlemcani, Yafang Li, Philippe Delarue, Philippe Le Moigne, and Xavier Guillaud. "Model and control of the DC–DC modular multilevel converter with DC fault tolerance." EPE Journal 30, no. 4 (2020): 153–64. http://dx.doi.org/10.1080/09398368.2020.1750847.

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Luna, Benjamin Vidales, José Luis Monroy-Morales, Manuel Madrigal Martínez, Domingo Torres-Lucio, Serge Weber, and Patrick Schweitzer. "Analysis of Internal Signal Perturbations in DC/DC and DC/AC Converters under Arc Fault." Energies 14, no. 11 (2021): 3005. http://dx.doi.org/10.3390/en14113005.

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The constant increase in electrical energy consumption has led to a growth of photovoltaic installations (PV) along with the corresponding power converters for proper operation. Power electronics converters represent a challenge to maintain the system’s performance and safety; one such problem is series DC Arc Fault (AF). DC AFs lead to fire risk, damaging the main bus and the loads when not detected and interrupted in time. Therefore, research about DC AFs in power electronics converters must be carried out to predict the behavior and help avoid damage to the system. In this work, an innovative hybrid multilevel inverter for PV applications is used to explore the effect of series DC AFs in the converters’ internal signals, with the aims of setting the bases for the development of a detection system for power electronics. Both stages of conversion (DC/DC and DC/AC) are presented. In addition, the placement of the MPPT converter was considered for the tests. The AF experimental tests were performed with a generator based on the UL1699B specifications. The measurements of signals were performed in strategic points of the DC side, and changes and how to exploit them are discussed. This study contributes to a better understanding of the DC AF phenomenon and provides new insights for the development of new PV system protections.
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Zhou, Shijia, Fei Rong, Zhangtao Yin, Shoudao Huang, and Yuebin Zhou. "HVDC Transmission Technology of Wind Power System with Multi-Phase PMSG." Energies 11, no. 12 (2018): 3294. http://dx.doi.org/10.3390/en11123294.

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The high voltage DC (HVDC) transmission technology of wind power system, with multi-phase permanent magnetic synchronous generator (PMSG) is proposed in this paper. Each set of three-phase winding of the multi-phase PMSG was connected to a diode rectifier. The output of the diode rectifier was connected by several parallel isolated DC–DC converters. Each DC–DC converter was connected to a sub-module (SM). All SMs and two inductors were connected in a series. The proposed wind power system has several advantages including, transformerless operation, low cost, low voltage stress, and high fault tolerance. The maximum power point tracking (MPPT) and energy balance of the DC–DC converters were achieved by controlling the duty cycles of the DC–DC converters. The HVDC transmission was achieved by the nearest level control (NLC) with voltage sorting. The simulation model with 18-phase PMSG was established. Experimental results were also studied based on RT-Lab.
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Lee, Chun-Kwon, Gyu-Sub Lee, and Seung-Jin Chang. "Solution to Fault of Multi-Terminal DC Transmission Systems Based on High Temperature Superconducting DC Cables." Energies 14, no. 5 (2021): 1292. http://dx.doi.org/10.3390/en14051292.

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In this paper, we developed the small-signal state-space (SS) model of hybrid multi-terminal high-voltage direct-current (HVDC) systems and fault localization method in a failure situation. The multi-terminal HVDC (MTDC) system is composed of two wind farm side voltage-source converters (VSCs) and two grid side line-commutated converters (LCCs). To utilize relative advantages of the conventional line-commutated converter (LCC) and the voltage source converter (VSC) technologies, hybrid multi-terminal high-voltage direct-current (MTDC) technologies have been highlighted in recent years. For the models, grid side LCCs adopt distinct two control methods: master–slave control mode and voltage droop control mode. By utilizing root-locus analysis of the SS models for the hybrid MTDC system, we compare stability and responses of the target system according to control method. Furthermore, the proposed SS models are utilized in time-domain simulation to illustrate difference between master–slave control method and voltage droop control method. However, basic modeling method for hybrid MTDC system considering superconducting DC cables has not been proposed. In addition, when a failure occurs in MTDC system, conventional fault localization method cannot detect the fault location because the MTDC system is a complex form including a branch point. For coping with a failure situation, we propose a fault localization method for MTDC system including branch points. We model the MTDC system based on the actual experimental results and simulate a variety of failure scenarios. We propose the fault localization topology on a branch cable system using reflectometry method. Through the simulation results, we verify the performance of fault localization. In conclusion, guidelines to select control method in implementing hybrid MTDC systems for integrating offshore wind farms and to cope with failure method are provided in this paper.
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M., Venkateswaran, Govindaraju C., and Santhosh T.K. "Integrated predictive control and fault diagnosis algorithm for single inductor-based DC-DC converters for photovoltaic systems." Circuit World 47, no. 1 (2020): 105–16. http://dx.doi.org/10.1108/cw-11-2019-0166.

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Purpose Power converters are an integral part of the energy conversion process in solar photovoltaic (PV) systems which is used to match the solar PV generation with the load requirements. The increased penetration of renewable invokes intermittency in the generated power affecting the reliability and continuous energy supply of such converters. DC-DC converters deployed in solar PV systems impose stringent restrictions on supplied power, continuous operation and fault prediction scenarios by continuously observing state variables to ensure continuous operation of the converter. Design/methodology/approach A converter deployed for a mission-critical application has to ensure continuous regulated output for which the converter has to ensure fault-free operation. The fault diagnostic algorithm relies on the measurement of a state variable to assess the type of fault. In the same line, a predictive controller depends on the measurement of a state variable to predict the control variable of a converter system to regulate the converter output around a fixed or a variable reference. Consequently, both the fault diagnosis and the predictive control algorithms depend on the measurement of a state variable. Once measured, the available data can be used for both algorithms interchangeably. Findings The objective of this work is to integrate the fault diagnostic and the predictive control algorithms while sharing the measurement requirements of both these control algorithms. The integrated algorithms thus proposed could be applied to any converter with a single inductor in its energy buffer stage. Originality/value laboratory prototype is created to verify the feasibility of the integrated predictive control and fault diagnosis algorithm. As the proposed method combine the fault detection algorithm along with predictive control, a load step variation and manual fault creation methods are used to verify the feasibility of the converter as with the simulation analysis. The value for the capacitors and inductors were chosen based on the charge-second and volt-second balance equations obtained from the steady-state analysis of boost converter.
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Dissertations / Theses on the topic "Fault tolerance (Engineering) ; DC-to-DC converters"

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Zhang, Jianxi. "LCL DC/DC converter and DC hub under DC faults and development of DC grids with protection system using DC hub." Thesis, University of Aberdeen, 2016. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=231428.

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In this thesis, an IGBT-based DC/DC converter employing an internal inductor-capacitor-inductor (LCL) passive circuit is investigated in DC grid under fault conditions. It is concluded that a range of converter parameters exist which will give DC fault current magnitudes close to rated currents. Steady state and transient fault responses are investigated in depth. The converter is modelled on PSCAD platform under fault operation and the simulation results verify the analytical studies. LCL DC hub is an extension of DC/DC converter to multiple ports with capability of limiting the propagation of DC faults in a DC grid. Analytical mathematical equations for steady state fault currents are derived. A state space model of the hub is introduced for transient fault study. The hub is able to interconnect multiple DC cables at different voltage levels and act as DC substation for DC grid. The designed hub also has the ability to maintain the current within the order of its rated value without additional protection even for the worst case fault. The analytical study results are confirmed by detailed simulation on PSCAD. Based on the good performance of the LCL DC hub under DC faults, a DC grid topology with protection system employing LCL DC hub is proposed and investigated in this thesis. The advantage and feasibility of this method in DC fault protection is investigated based on the developed grid model. The DC grid protection systems are proposed and analysed in depth under several DC fault scenarios. The PSCAD simulation results under a range of DC fault scenarios on various locations are shown. These results confirm significance of the proposed DC grid protection system and advantages of this proposed topology in fault isolation.
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Sajadian, Sally. "Energy conversion unit with optimized waveform generation." Thesis, 2014. http://hdl.handle.net/1805/6109.

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Indiana University-Purdue University Indianapolis (IUPUI)<br>The substantial increase demand for electrical energy requires high efficient apparatus dealing with energy conversion. Several technologies have been suggested to implement power supplies with higher efficiency, such as multilevel and interleaved converters. This thesis proposes an energy conversion unit with an optimized number of output voltage levels per number of switches nL=nS. The proposed five-level four-switch per phase converter has nL=nS=5/4 which is by far the best relationship among the converters presented in technical literature. A comprehensive literature review on existing five-level converter topologies is done to compare the proposed topology with conventional multilevel converters. The most important characteristics of the proposed configuration are: (i) reduced number of semiconductor devices, while keeping a high number of levels at the output converter side, (ii) only one DC source without any need to balance capacitor voltages, (iii) high efficiency, (iv) there is no dead-time requirement for the converters operation, (v) leg isolation procedure with lower stress for the DC-link capacitor. Single-phase and three-phase version of the proposed converter is presented in this thesis. Details regarding the operation of the configuration and modulation strategy are presented, as well as the comparison between the proposed converter and the conventional ones. Simulated results are presented to validate the theoretical expectations. In addition a fault tolerant converter based on proposed topology for micro-grid systems is presented. A hybrid pulse-width-modulation for the pre-fault operation and transition from the pre-fault to post-fault operation will be discussed. Selected steady-state and transient results are demonstrated to validate the theoretical modeling.
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Books on the topic "Fault tolerance (Engineering) ; DC-to-DC converters"

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N, Baez Anastacio, and United States. National Aeronautics and Space Administration., eds. A modular electric power system test bed for small spacecraft. National Aeronautics and Space Administration, 1994.

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Conference papers on the topic "Fault tolerance (Engineering) ; DC-to-DC converters"

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Zinchenko, Denys, Roman Kosenko, Dmitri Vinnikov, and Andrei Blinov. "Fault-Tolerant Soft-Switching Current-Fed DC-DC Converter." In 2019 IEEE 2nd Ukraine Conference on Electrical and Computer Engineering (UKRCON). IEEE, 2019. http://dx.doi.org/10.1109/ukrcon.2019.8879973.

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Dah-Chuan Lu, Dylan, John Long Soon, and Dries Verstraete. "Two-transistor step-down DC/DC converters with fault-tolerant capability." In 2014 Australasian Universities Power Engineering Conference (AUPEC). IEEE, 2014. http://dx.doi.org/10.1109/aupec.2014.6966574.

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Khan, Zmarrak Wali, Han Minxiao, Yang Jinggang, Atiq ur Rehman, Bitew Girmaw Teshagar, and Luu Kim Tuan. "An overview of Fault Tolerant High Power DC-DC Converters for Application in DC Grid." In 2019 IEEE 6th International Conference on Engineering Technologies and Applied Sciences (ICETAS). IEEE, 2019. http://dx.doi.org/10.1109/icetas48360.2019.9117360.

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Li, Jin, Hengzhi Lv, Shuyu Shang, and Nan Jin. "Topology and Control of Two-Stage Bidirectional AC/DC Fault Tolerant Converter." In 2018 5th International Conference on Information Science and Control Engineering (ICISCE). IEEE, 2018. http://dx.doi.org/10.1109/icisce.2018.00207.

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Jadidi, Saeedreza, Hamed Badihi, and Youmin Zhang. "Passive Fault-Tolerant Control of PWM Converter in a Hybrid AC/DC Microgrid." In 2019 IEEE 2nd International Conference on Renewable Energy and Power Engineering (REPE). IEEE, 2019. http://dx.doi.org/10.1109/repe48501.2019.9025123.

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Journal articles
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