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1. Bento, Fernando Jos� Figueiredo. Fault Tolerant DC-DC Converters.

Degree: 2016, RCAAP

Technology advancement verified in recent times is flagrant, specially in our home appliances. This advancement brought to us new electronic equipment and other DC-compatible appliances with improved capability for energy management, using electronic converters for such purpose. These loads have in common the fact that, at a certain point, they need to transform the AC energy of the grid to DC. Furthermore, an important increase in the distributed generation of energy has been witnessed. The majority of these systems produce energy in DC. These two statements, combined with the increased pressure related to the need of energy efficient systems, will certainly trigger, in a near future, the adoption of district-scale DC grids that connect DC generation plants and consumers, in an effort to reduce the number of conversion steps required to deliver power to a DC appliance and, at the same time, limit power losses arising from the energy transportation using conventional AC grids. In a future where DC grids will be used, several DC voltage levels will be required to allow the connection of the different load profiles that require DC. The inclusion of DC-DC converters will allow the creation of these voltage levels. The reliability of such converters plays a key role, as it ensures service continuity for the DC loads connected to them and, at the same time, preserve the quality of the energy delivered by these converters. With the reliability levels increase as a goal, this work uses an open-circuit fault-diagnostic method suitable for several DC-DC converter topologies. After detecting an open-circuit fault in any of the converter power switches, the control of the converter is re-adapted in order to minimize the adverse impacts of an open-circuit fault, namely the increase of the current ripple. To verify the effectiveness of these strategies, laboratory tests were conducted, using a three-phase interleaved boost converter prototype connected to a resistive load.

O avan�o da tecnologia verificado nos �ltimos tempos � not�rio, sobretudo nas cargas utilizadas em nossas casas. Esse avan�o trouxe at� �s nossas habita��es novos equipamentos eletr�nicos e outras cargas compat�veis com DC, que fazem uma gest�o mais eficiente da energia, recorrendo a conversores eletr�nicos de pot�ncia para esse efeito. Estas cargas t�m como denominador comum o facto de necessitarem, em determinado ponto, de retificar para DC a energia AC absorvida da rede el�trica. Por outro lado, assistiu-se ao crescimento significativo do n�mero de sistemas de microgera��o de energia. A grande maioria destes sistemas produz energia DC. Estas duas constata��es, aliadas � crescente press�o relacionada com a necessidade de sistemas eficientes em termos energ�ticos, levar�o a que, num futuro pr�ximo, redes DC � escala de bairros sejam implementadas, permitindo assim a liga��o de instala��es de micro-gera��o a cargas DC, dentro do mesmo bairro, como uma forma de reduzir o n�mero de passos de convers�o de energia, bem como as perdas no transporte dessa energia…

Advisors/Committee Members: Cardoso, Ant�nio Jo�o Marques.

Subjects/Keywords: Conversores Dc-Dc; [email protected]; Dete��o de Falhas; Fiabilidade; Toler�ncia A Falhas; Dom�nio/�rea Cient�fica::Engenharia e Tecnologia::Engenharia Eletrot�cnica, Eletr�nica e Inform�tica

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Bento, F. J. F. (2016). Fault Tolerant DC-DC Converters. (Thesis). RCAAP. Retrieved from https://www.rcaap.pt/detail.jsp?id=oai:ubibliorum.ubi.pt:10400.6/5801

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Bento, Fernando Jos� Figueiredo. “Fault Tolerant DC-DC Converters.” 2016. Thesis, RCAAP. Accessed November 23, 2020. https://www.rcaap.pt/detail.jsp?id=oai:ubibliorum.ubi.pt:10400.6/5801.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Bento, Fernando Jos� Figueiredo. “Fault Tolerant DC-DC Converters.” 2016. Web. 23 Nov 2020.

Vancouver:

Bento FJF. Fault Tolerant DC-DC Converters. [Internet] [Thesis]. RCAAP; 2016. [cited 2020 Nov 23]. Available from: https://www.rcaap.pt/detail.jsp?id=oai:ubibliorum.ubi.pt:10400.6/5801.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bento FJF. Fault Tolerant DC-DC Converters. [Thesis]. RCAAP; 2016. Available from: https://www.rcaap.pt/detail.jsp?id=oai:ubibliorum.ubi.pt:10400.6/5801

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.