In this paper, Triple Active Bridge Converter (TABC) based Cell Level/Sub-Modular level power processing Battery Energy Storage System (BESS) is proposed to provide better efficiency, reliability and safety benefits. One TABC is connected to the two cells/two sub-modules of the battery pack, and all outputs of the TABC's are connected in series or parallel to achieve the required voltage or current. The main features of the proposed configuration are: to avoid the unnecessary charging/discharging phenomena, providing the isolation, and to improve the optimal power flow of each cell of the battery. Also, secondary voltage compensation and droop based decentralized control scheme is proposed to improve the power-sharing of each TABC and voltage regulation at the battery output under the effect of cable resistance considered. The proposed configuration and control strategy is validated under different loading conditions by MATLAB®, SIMULINK®.
The role of power electronics in the utility grid is continually expanding. As converter design processes mature and new advanced materials become available, the pace of industry adoption is poised to accelerate. Looking forward, we can envision a future in which power electronics are as integral to grid functionality as the transformer is today. The Enabling Advanced Power Electronics Technologies for the Next Generation Electric Utility Grid Workshop was organized by Sandia National Laboratories and held in Albuquerque, New Mexico, July 17 - 18, 2018 . The workshop helped attendees to gain a broader understanding of power electronics R&D needs—from materials to systems—for the next generation electric utility grid. This report summarizes discussions and presentations from the workshop and identifies opportunities for future efforts.
The National Nuclear Security Agency (NNSA) created a Minority Serving Institution Partnership Plan (MSIPP) to 1) align investments in a university capacity and workforce development with the NNSA mission to develop the needed skills and talent for NNSA’s enduring technical workforce at the laboratories and production plants and 2) to enhance research and education at under-represented colleges and universities. Out of this effort, MSIPP launched a new program in early FY17 focused on Tribal Colleges and Universities (TCUs). The following report summarizes the project focus and status update during this reporting period.
This paper presents a review of the main electrical components that are expected to be present in marine renewable energy arrays. The review is put in context by appraising the current needs of the industry and identifying the key components required in both device and array-scale developments. For each component, electrical, mechanical and cost considerations are discussed; with quantitative data collected during the review made freely available for use by the community via an open access online repository. This data collection updates previous research and addresses gaps specific to emerging offshore technologies, such as marine and floating wind, and provides a comprehensive resource for the techno-economic assessment of offshore energy arrays.