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| 1 | Adaptive Decentralized Output-Constrained Control of Single-Bus DC Microgrids显示文摘A single-bus DC microgrid can represent a wide range of applications. Control objectives of such systems include high-performance bus voltage regulation and proper load sharing among multiple distributed generators(DGs) under various operating conditions. This paper presents a novel decentralized control algorithm that can guarantee both the transient voltage control performance and realize the predefined load sharing percentages. First, the output-constrained control problem is transformed into an equivalent unconstrained one. Second, a two-step backstepping control algorithm is designed based on the transformed model for bus-voltage regulation. Since the overall control effort can be split proportionally and calculated with locally-measurable signals, decentralized load sharing can be realized. The control design requires neither accurate parameters of the output filters nor load measurement. The stability of the transformed systems under the proposed control algorithm can indirectly guarantee the transient bus voltage performance of the original system. Additionally, the high-performance control design is robust, flexible, and reliable. Switch-level simulations under both normal and fault operating conditions demonstrate the effectiveness of the proposed algorithm. | Jiangkai Peng Bo Fan Jiajun Duan Qinmin Yang Wenxin Liu | 2019 | IEEE/CAA Journal of Automatica Sinica2019，6，2： | 4 |
| 2 | Distributed Control of Multiple-Bus Microgrid With Paralleled Distributed Generators显示文摘A microgrid is hard to control due to its reduced inertia and increased uncertainties. To overcome the challenges of microgrid control, advanced controllers need to be developed.In this paper, a distributed, two-level, communication-economic control scheme is presented for multiple-bus microgrids with each bus having multiple distributed generators(DGs) connected in parallel. The control objective of the upper level is to calculate the voltage references for one-bus subsystems. The objectives of the lower control level are to make the subsystems' bus voltages track the voltage references and to enhance load current sharing accuracy among the local DGs. Firstly, a distributed consensusbased power sharing algorithm is introduced to determine the power generations of the subsystems. Secondly, a discrete-time droop equation is used to adjust subsystem frequencies for voltage reference calculations. Finally, a Lyapunov-based decentralized control algorithm is designed for bus voltage regulation and proportional load current sharing. Extensive simulation studies with microgrid models of different levels of detail are performed to demonstrate the merits of the proposed control scheme. | Bo Fan Jiangkai Peng Jiajun Duan Qinmin Yang Wenxin Liu | 2019 | IEEE/CAA Journal of Automatica Sinica2019，6，3： | 4 |
| 3 | The comparison of ensemble or deterministic dispersion modeling on global dispersion during Fukushima Dai-ichi nuclear accident显示文摘Ensemble forcasting,originally developed for weather prediction,is lately being extended to atmospheric dispersion applications,which is a new,effective methodology for improving the atmospheric dispersion numerical modeling.In March 2011,due to the massive 9.0 earthquakes and ensuing tsunami that struck off the northern coast of the island of Honshu,the Fukushima Nuclear Plant I had the substantial leak of radioactive materials into surrounding environment and atmosphere.To aim at the global dispersion modeling of atmospheric radionuclides from Fukushima Nuclear Accident,this paper presents two approaches of atmospheric dispersion forecasting:ensemble dispersion modeling(EDM) and deterministic dispersion modeling(DDM),conducts the globally dispersion modeling cases for Fukushima nuclear accident,and analyzes and evaluates the simulation results using observation data.In this paper,EDM includes three different perturbation methods:meteorological perturbation method,turbulence perturbation method,and physical parameterization ensemble forecasting method.The simulation results show that the trajectories from EDM have a better performance,which is in better agreement with the atmospheric circulation and observation data; the spread from DDM is slower and not as far as EDM.Additionally,the results from EDM display a better performance in the modeling of transport from Japan to China East Sea on April 4.The reasons for these results are:the techniques of MET and TUR are performed by adding perturbations on mean wind and turbulent velocity,respectively; the various different flow fields will result in far spreading in horizontal and the simulation results closer to observation; PHY is performed by using different diffusion physical parameterizations and produces the perturbations on vertical wind,which results the spreading in smaller range and discontinuous in horizontal.Finally,the comparative analysis between modeling results and observation data shows that all cases results are in good agreement with trends of observed radionuclides surface concentration; however,the modeling surface concentration is smaller than observation,especially in DDM and PHY.Furthermore,the EDM results show that MET and TUR are of more evolutionary advantage than PHY in modeling of average and maximum concentration.Therefore,this study can serve as a reference to atmospheric dispersion and environmental emergency response(EER). | SHENG Li SONG ZhenXin HU JiangKai Lü Kai TONG Hua LI Bing QIAO QingDang | 2015 | Science China Earth Sciences2015，58，3： | 3 |
| 4 | Distributed Periodic Event-Triggered Optimal Control of DC Microgrids Based on Virtual Incremental Cost显示文摘This article presents a distributed periodic eventtriggered(PET)optimal control scheme to achieve generation cost minimization and average bus voltage regulation in DC microgrids.In order to accommodate the generation constraints of the distributed generators(DGs),a virtual incremental cost is firstly designed,based on which an optimality condition is derived to facilitate the control design.To meet the discrete-time(DT)nature of modern control systems,the optimal controller is directly developed in the DT domain.Afterward,to reduce the communication requirement among the controllers,a distributed event-triggered mechanism is introduced for the DT optimal controller.The event-triggered condition is detected periodically and therefore naturally avoids the Zeno phenomenon.The closed-loop system stability is proved by the Lyapunov synthesis for switched systems.The generation cost minimization and average bus voltage regulation are obtained at the equilibrium point.Finally,switch-level microgrid simulations validate the performance of the proposed optimal controller. | Jiangkai Peng Bo Fan Zhenghong Tu Wei Zhang Wenxin Liu | 2022 | IEEE/CAA Journal of Automatica Sinica2022，9，4： | 2 |
| 5 | Cerebral paragonimiasis: A retrospective analysis of 89 cases显示文摘 | Jingyu Chen Zhi Chen Jiangkai Lin Gang Zhu Hui Meng Gaoyu Cui Nan Wu Rong Hu Jiexiang Pan Yongjie Zou Hua Feng | 2012 | Clinical Neurology and Neurosurgery2012，，： | 1 |
| 6 | Effect of vimentin on reactive gliosis: in vitro and in vivo analysis显示文摘 | Lin Jiangkai Cai Wenqin | 2004 | J Neurotrauma2004，21，： | 1 |
| 7 | 显示文摘 | JIANGKai(蒋凯) MENGJian(孟建) HEZhi-Qi(何志奇) etal | 1999 | 中国科学:B辑1999，25，： | 1 |
| 8 | Photodynamic therapy on implanted VX2 tumor in rabbit brains 显示文摘 | Li Fei Jiangkai Lin Feng Hua | 2005 | Progress in Biomedical Optics and Imaging2005，，5967： | 1 |
| 9 | 4-Benzamido-TEMPO Catalyzed Oxidation of a Broad Range of Alcohols to the Carbonyl Compounds with NaBrO_(3) under Mild Conditions显示文摘4-Benzamido-TEMPO catalyzed oxidation system for conversion of a wide range of alcohols to the aldehydes or ketones with NaBrO_(3) under room temperature conditions has been developed.The credible,operationally con-venient and economical,and condition mild oxidation protocol is particularly of interest in laboratory and in fine chemicals manufacture. | Jiaxuan Shen Jiangkai Sun Shuangshuang Qin Changhu Chu Renhua Liu | 2014 | Chinese Journal of Chemistry2014，32，5： | 0 |
| 10 | Scientific Advances and Weather Services of the China Meteorological Administration’s National Forecasting Systems during the Beijing 2022 Winter Olympics显示文摘Since the Beijing 2022 Winter Olympics was the first Winter Olympics in history held in continental winter monsoon climate conditions across complex terrain areas,there is a deficiency of relevant research,operational techniques,and experience.This made providing meteorological services for this event particularly challenging.The China Meteorological Administration(CMA)Earth System Modeling and Prediction Centre,achieved breakthroughs in research on short-and medium-term deterministic and ensemble numerical predictions.Several key technologies crucial for precise winter weather services during the Winter Olympics were developed.A comprehensive framework,known as the Operational System for High-Precision Weather Forecasting for the Winter Olympics,was established.Some of these advancements represent the highest level of capabilities currently available in China.The meteorological service provided to the Beijing 2022 Games also exceeded previous Winter Olympic Games in both variety and quality.This included achievements such as the“100-meter level,minute level”downscaled spatiotemporal resolution and forecasts spanning 1 to 15 days.Around 30 new technologies and over 60 kinds of products that align with the requirements of the Winter Olympics Organizing Committee were developed,and many of these techniques have since been integrated into the CMA’s operational national forecasting systems.These accomplishments were facilitated by a dedicated weather forecasting and research initiative,in conjunction with the preexisting real-time operational forecasting systems of the CMA.This program represents one of the five subprograms of the WMO’s high-impact weather forecasting demonstration project(SMART2022),and continues to play an important role in their Regional Association(RA)II Research Development Project(Hangzhou RDP).Therefore,the research accomplishments and meteorological service experiences from this program will be carried forward into forthcoming highimpact weather forecasting activities.This article provides an overview and assessment of this program and the operational national forecasting systems. | Guo DENG Xueshun SHEN Jun DU Jiandong GONG Hua TONG Liantang DENG Zhifang XU Jing CHEN Jian SUN Yong WANG Jiangkai HU Jianjie WANG Mingxuan CHEN Huiling YUAN Yutao ZHANG Hongqi LI Yuanzhe WANG Li GAO Li SHENG Da LI Li LI Hao WANG Ying ZHAO Yinglin LI Zhili LIU Wenhua GUO | 2024 | Advances in Atmospheric Sciences2024，41，5： | 0 |
| 11 | Preparation and Photocatalytic Activity of Nanocrystalline GdFeO3显示文摘To develop new photocatalysts with high performance, nanocrystalline material of rare-earth composite oxide GdFeO3 with perovskite-type struetrure was synthesized by sol-gel method in the system of citric acid, with Gd2O3, Fe(NO3)3·9H2O, and nitric acid (1:1 vloume fraction) as starting materials. The crystal structure and crystallinity of the powders were determined by XRD, using Germanv Bluker D8-Aderating at 20 mA and 40 kV. | NiuXinshu LiHonghua ZhangFeng LiuGuoguang JiangKai | 2005 | Journal of Rare Earths2005，23，1： | 0 |
| 12 | Deferoxamine improves neurological function in a rat model of experimental spinal cord injury显示文摘A rat model of spinal cord injury was established using modified Allen's method and treated with the ferric iron-chelating agent,deferoxamine.Hematoxylin-eosin,Nissl and Perl's Prussian blue staining,at 7-14 days following spinal cord injury,showed that following deferoxamine treatment,glial cells proliferation increased significantly,nerve cell morphology was improved and hemosiderin was significantly reduced in the injury region.At 1-56 days following injury,Basso,Beattie,and Bresnahan Locomotor Rating Scale scores were increased,while latencies of somatosensory-evoked potentials and motor-evoked potentials were decreased.Results demonstrate that deferoxamine can promote neurological functional recovery after experimental spinal cord injury in rats. | Yanting Wang Shaoji Yuan Fachen Wang Rong HU Jiangkai Lin Zisheng Liu Hua Feng | 2011 | Neural Regeneration Research2011，6，35： | 0 |
| 13 | Visible-light-induced decarboxylative alkynylation of carboxylic acids in batch and continuous flow显示文摘A green efficient photoredox-catalyzed decarboxylative alkynylation of carboxylic acids with alkynyl bromides has been developed.This broadly applicable protocol is presented whereinα-amino,aliphatic andα-oxy acids are converted into useful alkynylation products.The commercially-available organic photocatalyst 4CzIPN is used as the photocatalyst,organic base DBU is utilized as the base,and DMSO serves as solvent.This strategy features mild conditions,is metal-free,and is environmentally friendly.The batch and continuous-flow protocols described were applied to obtain a broader substrate scope of functionalization(more than 50 examples).Furthermore,we demonstrate that the use of microflow technology enhanced and intensified the reaction process,achieving significantly reduced reaction times(i.e.,10 min of residence time). | Longzhou Qin Xinpeng Zhang Hao Sun Xiu Duan Jie Liu Mengyu Wu Xin Yuan Jiangkai Qiu Kai Guo | 2024 | Green Synthesis and Catalysis2024，5，1： | 0 |
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