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.

Today, Dr. Kosei Shinoda presented a paper entitled « A New Energy Management Control of Modular Multilevel Converters for Coping with Voltage Stress on Sub-Modules » during Session 5 / CIGRE B4: “DC Systems and Power Electronics”.

Dr. Shinoda gave a 10 minute presentation on this fantastic innovation developed at SuperGrid Institute. His paper investigates the impact of the operating condition on the Sub-Module voltage ripples. In particular, it is revealed that under the classical control scheme where the MMC 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 utilisation of the converter asset.

To find out more, follow this link.