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Distributed Secondary Control Based on Dynamic diffusion algorithm for Current Sharing and Average Voltage Regulation in DC Microgrids

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Journal of Modern Power Systems and Clean Energy 2024年第2期12卷 597-607页

作者： Dawei Liao Fei Gao Daniel J.Rogers Wentao Huang Dong Liu Houjun Tang Department of Electrical Engineering Shanghai Jiao Tong UniversityShanghaiChina Department of Engineering Science University of OxfordOxford OX12JDU.K. IEEE

This paper introduces a distributed secondary control scheme for achieving current sharing and average voltage regulation objectives in a DC *** proposed scheme employs a dynamic diffusion algorithm(DDA)instead of the consensus algorithm to enable distributed communication among *** help understand DDA,the relation of DDA and other diffusion algorithms is discussed in detail and its superiority is shown by comparison with diffusion and consensus ***,considering the discrete nature and different sampling time of the digital controller and communication network,a z-domain model of the entire DC microgrid is *** influence of communication and secondary control parameters on the system stability is *** on the established model,the tolerable communication rates are ***-time simulations conducted on the OPAL-RT platform validate the effectiveness of the proposed scheme,showcasing its advantages in terms of convergence speed and stability.

关键词： Cooperative control DC microgrid diffusion algorithm discrete-time modeling distributed secondary control

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A new physical unclonable function architecture

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Journal of Semiconductors 2015年第3期36卷 121-126页

作者：白创邹雪城戴葵 School of Optical and Electronic Information Huazhong University of Science and Technology

This paper describes a new silicon physical unclonable function （PUF） architecture that can be fabri- cated on a standard CMOS process. Our proposed architecture is built using process sensors, difference amplifier, comparator, voting mechanism and diffusion algorithm circuit. Multiple identical process sensors are fabricated on the same chip. Due to manufacturing process variations, each sensor produces slightly different physical charac- teristic values that can be compared in order to create a digital identification for the chip. The diffusion algorithm circuit ensures further that the PUF based on the proposed architecture is able to effectively identify a population of ICs. We also improve the stability of PUF design with respect to temporary environmental variations like temperature and supply voltage with the introduction of difference amplifier and voting mechanism. The PUF built on the proposed architecture is fabricated in 0.18 μm CMOS technology. Experimental results show that the PUF has a good output statistical characteristic of uniform distribution and a high stability of 98.1% with respect to temperature variation from -40 to 100 ℃, and supply voltage variation from 1.7 to 1.9 V.

关键词： physical unclonable functions digital identification process sensors voting mechanism diffusion algorithm

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Airspace Sectorization Method for Flexible Airspace Management

Airspace Sectorization Method for Flexible Airspace Manageme...

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第37届中国控制会议

作者： Defu Zhang Yangzhou Chen Department of Electrical Engineering Shandong Polytechnic College of Metropolitan Transportation Beijing University of Technology

A method for airspace sectorization is developed based on initial airspace configuration. The method begins with identifying Traffic Mass（TM） situations in all sectors ahead of time, especially for the sectors that exceeds the defined controller capability to manage（called overloaded sectors） as well as for those that are under-utilized（called under-utilized sectors）. Then, for the overloaded sectors, the method implements the removal of excessive Traffic Mass by moving sector boundaries from the sector with low TM to the overloaded sector in conjunction with a diffusion algorithm. Alternatively, for the under-utilized sectors, they can be combined with their neighbors using General-Clustering-algorithm. The simulation demonstrates that the method not only removes excessive TM but also improves efficiency. More importantly, the designed sectors which follow the candidate boundary strategy reduce controller’s cognitive difficulty, this helps to keep controllers in as much clear-headed situation as possible to ensure flight safety.

关键词： air traffic management flexible airspace management airspace sector diffusion algorithm general clustering algorithm

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