2026-04-07T10:21:16Zhttps://ebiltegia.mondragon.edu/oai/requestoai:ebiltegia.mondragon.edu:20.500.11984/11282024-04-15T15:46:40Zcom_20.500.11984_460col_20.500.11984_469
eBiltegia
advisor
Barrena Bruña, Jon Andoni
author
Unamuno, Eneko
2018-11-12T09:38:25Z
2018-11-12T09:38:25Z
2017
https://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=148155
https://hdl.handle.net/20.500.11984/1128
The current society is facing several challenges related to the field of energy, such as the high dependency on fossil fuels, the constant increment in the energy consumption and the environmental problems caused by these factors. The integration of distributed generation systems—mainly based on renewable energies—combined with energy storage systems is the most interesting solution to tackle these issues.
However, most of these systems are connected to the grid through electronic converters that actively control the power exchange. This fact causes various problems not suffered since the origins of electric grids in the transition from an electric model dominated by synchronous machines to a model where power electronics gain more importance—even being the dominating systems in some cases. The lack of inertial response and primary reserve, the instabilities caused by the interactions of power electronic systems or the premature situation of direct current grids, which are being employed more widely, stand out as some of the most important challenges that we want to address with this thesis.
In this context, the main purpose of the thesis is the development of ac/dc microgrid control strategies that improve the dynamic behaviour of the system.
In order to achieve this objective we contemplate four main lines that consist of the identification and analysis of different microgrid topologies and control techniques, the study of primary control operation modes of the systems that compose these microgrids and finally the the development and evaluation of various low-level control strategies for ac and dc microgrids. These techniques are based on the concept of operation of classical synchronous generators, enabling their autonomous operation as well as providing inertial response under grid perturbations. Among the contributions of the thesis, we can highlight on the one hand, the analysis and comparative evaluation of synchronous machine emulation techniques for ac microgrids, where we evaluate their behaviour for different types of perturbations and we examine their stability applying the generalized Nyquist criterion. Regarding dc microgrids, on the other hand, we propose novel control techniques that are analogous to
the ones analysed for ac grids. We call these techniques virtual-capacitors, as they emulate the behaviour of these passive elements connected to dc grids. In this case, we thoroughly study their transient as well as steady-state behaviour, and we demonstrate that they can be adapted by simply modifying control parameters. Moreover, we analyse the stability of these techniques through parametric analysis of their dominant eigenvalues.
eng
© Eneko Unamuno Ruiz
Utilización de la corriente continua
Trasnmisión y distribución eléctrica
Distribución de energía
Ingeniería de control
ODS 7 Energía asequible y no contaminante
Control and stability of Ac/Dc microgrids
http://purl.org/coar/resource_type/c_db06
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
URL
http://ebiltegia.mondragon.edu/xmlui/bitstream/20.500.11984/1128/1/Tesis%20Unamuno%20Ruiz%20Eneko.pdf
File
MD5
d900d671f145eea5e13bdbc61fce524b
11795466
application/pdf
Tesis Unamuno Ruiz Eneko.pdf
URL
http://ebiltegia.mondragon.edu/xmlui/bitstream/20.500.11984/1128/6/Tesis%20Unamuno%20Ruiz%20Eneko.pdf.txt
File
MD5
4ebf921b0ec52ca888f5534dc0fef95f
314881
text/plain
Tesis Unamuno Ruiz Eneko.pdf.txt