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Read More A New Energy Management Control of Modular Multilevel Converters for Coping with Voltage Stress on Sub-Modules Gallery A New Energy Management Control of Modular Multilevel Converters for Coping with Voltage Stress on Sub-Modules Publications, Supergrid Architecture & Systems A New Energy Management Control of Modular Multilevel Converters for Coping with Voltage Stress on Sub-Modules Aurélie Flegeo2019-04-24T11:17:05+00:00April 24th, 2019|Publications, Supergrid Architecture & Systems| This paper investigates the impact of the operating condition on the SM voltage ripples. In particular, it is revealed that under the classical control scheme where the Modular Multilevel Converter internal energy varies naturally with the DC grid voltage, the traditional sizing approach based on the analytical expression of instantaneous SM voltage may fail to respect the SM voltage constraint. To tackle this problem, this paper presents a solution by incorporating the advantages of the explicit energy management and the developed analytical expressions of the SM voltage ripple, which achieves a better utilization of the converter asset. Read More SuperGrid Institute’s head office & platforms are fully operational! Gallery SuperGrid Institute’s head office & platforms are fully operational! Event SuperGrid Institute’s head office & platforms are fully operational! Aurélie Flegeo2019-04-10T11:27:48+00:00April 9th, 2019|Event| Nearly 150 people gathered together on Monday the 8th of April to inaugurate SuperGrid Institute’s headquarters. Our HQ is 5,560 square meters of offices and platforms dedicated to developing technologies: to build the electricity transmission network of the future, and to participate in the wide-scale integration renewable energies within the power network. Read More SuperGrid Institute, SME Patent Superstar of 2018 Gallery SuperGrid Institute, SME Patent Superstar of 2018 Press release SuperGrid Institute, SME Patent Superstar of 2018 Aurélie Flegeo2019-04-05T20:03:07+00:00April 5th, 2019|Press release| SuperGrid Institute has been rewarded for its ambitious intellectual property strategy, ranking first of the top 10 patent applicants in the SME category for 2018. Created in 2014, SuperGrid Institute has already filed 50 patent applications, including 16 in 2018 alone. Read More PhD Loriane DESMARS “Study of electrical and thermal properties of epoxy-anhydride composite materials for high voltage insulation” Gallery PhD Loriane DESMARS “Study of electrical and thermal properties of epoxy-anhydride composite materials for high voltage insulation” High Voltage Substation Equipment, HVDC Cable Systems, Phd PhD Loriane DESMARS “Study of electrical and thermal properties of epoxy-anhydride composite materials for high voltage insulation” Aurélie Flegeo2019-04-04T11:12:50+00:00April 2nd, 2019|High Voltage Substation Equipment, HVDC Cable Systems, Phd| The work presented in this manuscript has been motivated by the necessity to develop more efficient electrical insulating materials compared to commercially available ones. An epoxy-anhydride matrix filled with micron sized alumina, often used to produce GIS solid insulators, has been used as a reference for this study. Read More Phd Caroline STACKLER “Electronic transformers for railway applications” Gallery Phd Caroline STACKLER “Electronic transformers for railway applications” Phd, Power Electronics & Converters Phd Caroline STACKLER “Electronic transformers for railway applications” Aurélie Flegeo2019-02-28T16:06:39+00:00February 25th, 2019|Phd, Power Electronics & Converters| The main objective of this thesis is to develop a methodology to size PETT topologies, in order to compare them. Read More Overview of DC–DC Converters Dedicated to HVdc Grids Aurélie Flegeo2019-04-17T10:20:39+00:00February 19th, 2019|Power Electronics & Converters, Publications, Supergrid Architecture & Systems| This paper presents an overview of the dc–dc power converters dedicated to HVdc proposing a classification based on their structure. Two large families are established: those which provide galvanic isolation, and those which do not. Several subfamilies are also proposed. An overview of the main HVdc applications that can be targeted with each family is also presented, highlighting the main converter requirements for each application case. Read More PhD Amjad MOUHAIDALI “Contribution to the modelling of HVDC cables for electromagnetic transient simulations” Gallery PhD Amjad MOUHAIDALI “Contribution to the modelling of HVDC cables for electromagnetic transient simulations” Phd, Supergrid Architecture & Systems PhD Amjad MOUHAIDALI “Contribution to the modelling of HVDC cables for electromagnetic transient simulations” Aurélie Flegeo2019-02-13T11:02:37+00:00February 13th, 2019|Phd, Supergrid Architecture & Systems| The integration of new technologies in the electric grids made them more and more complex, and most likely future growth of power grids will be based more on underground cables than overhead lines. One problem here, is that the mathematical model for electromagnetic simulation of power cables still has some shortcomings regarding stability, accuracy and passivity. In this thesis, we evaluate the cable parameters using analytical and numerical methods. Read More Fault behaviour of bipolar overhead line based HVDC grids Aurélie Flegeo2019-04-17T10:22:34+00:00February 8th, 2019|Publications, Supergrid Architecture & Systems| This paper provides a fault analysis of bipolar overhead line based HVDC grids using HB-MMC converters. The impacts of fault type and fault resistance are shown and the physical behaviour of the transient fault return current is explained. Read More FMEA of a non-selective fault-clearing strategy for HVDC grids Aurélie Flegeo2019-04-17T10:24:03+00:00February 7th, 2019|Publications, Supergrid Architecture & Systems| The Failure Mode Effect Analysis (FMEA) is a technique used to investigate failures in a process or component and to identify the resultant effects of these failures on system operations. In this paper it is explained how the FMEA can be used to define and assess the impact of the failure modes (FM) of a protection strategy for High Voltage Direct Current (HVDC) grids. 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