The Energy Management Control of MMC by SuperGrid Institute was presented in Japan this week at the CIGRE-IEC 2019 Conference on EHV and UHV (AC & DC), generating stimulating discussions about this new technology.
A New Energy Management Control of Modular Multilevel Converters for Coping with Voltage Stress on Sub-Modules
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.
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.
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.
PhD Loriane DESMARS “Study of electrical and thermal properties of epoxy-anhydride composite materials for high voltage insulation”
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.