A5101587596- Multilevel Inverters and Converters
- Advanced DC-DC Converters
- Microgrid Control and Optimization
- HVDC Systems and Fault Protection
- Power Systems and Technologies
- Power Systems and Renewable Energy
- Silicon Carbide Semiconductor Technologies
- Photovoltaic System Optimization Techniques
- High-Voltage Power Transmission Systems
- Power Transformer Diagnostics and Insulation
- Power Quality and Harmonics
- Smart Grid and Power Systems
- Power Systems Fault Detection
- Advanced Decision-Making Techniques
- Evaluation Methods in Various Fields
- Dynamics and Control of Mechanical Systems
- Robotic Path Planning Algorithms
- High voltage insulation and dielectric phenomena
- Genomics and Phylogenetic Studies
- Optimal Power Flow Distribution
- Plant Diversity and Evolution
- Technology and Security Systems
- Islanding Detection in Power Systems
- Magnetic Properties and Applications
- Freezing and Crystallization Processes
Shanghai Electric (China)
2022-2024
China Geological Survey
2023
Hefei Institutes of Physical Science
2022-2023
Institute of Plasma Physics
2022-2023
Chinese Academy of Sciences
2019-2023
University of Science and Technology of China
2022-2023
Electric Power Research Institute
2020-2023
State Grid Corporation of China (China)
2023
Dalian University of Technology
2019-2020
Dalian University
2020
The Hengduan Mountains (HDM) biodiversity hotspot exhibits exceptional alpine plant diversity. Here, we investigate factors driving intraspecific divergence within a HDM species Salix brachista (Cushion willow), common component of subnival assemblages. We produce high-quality genome assembly for this and characterize its genetic diversity, population structure pattern evolution by resequencing individuals collected across distribution. detect that has been shaped landscape isolated sky...
This paper proposes a novel single‐stage buck‐boost three‐Level neutral‐point‐clamped (NPC) inverter with two independent dc sources coupled for the grid‐tied photovoltaic (PV) application, which can effectively solve unbalanced operational conditions generally appearing between PV sources. The proposed control scheme simultaneously guarantee maximum power point (MPP) operation of both and maintain output waveform quality. Compared to traditional two‐stage inverter, NPC could reduce array...
Exploring the influence of vegetation carbon stocks over land-cover change and relationship between net primary production (NPP) is great practical importance for achieving China’s neutrality target. Therefore, this paper analyses spatio-temporal distribution NPP in Inner Mongolia from 2000 to 2020 explores stock caused by change, land cover NPP, change. The results show that main during 2000–2020 was conversion other types grassland, with bare grassland 2010 covering an area 20,634.87 km2....
The three-phase buck rectifier (3ph-BR) is suitable for applications where a voltage step-down function required. In this paper, an improved 3ph-BR topology proposed to reduce the stress on transistors. freewheeling diode in conventional split into two diodes series and input neutral point connected common of diodes. With corresponding modified modulation scheme, transistors only need withstand phase instead line-to-line voltage, bringing about significant reduction stress. enables more...
Salicaceae is a family of temperate woody plants in the Northern Hemisphere that are highly valued, both ecologically and economically. China contains highest species diversity these plants. Despite their widespread human use, how patterns formed remains mostly unknown, may be significantly affected by global climate warming. Using past, present, future environmental data 2673 georeferenced specimen records, we first simulated dynamic changes suitable habitats population structures...
Three-phase triple-voltage dual-active-bridge (T <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> -DAB) converter possesses high input voltage and large output current capacity, which can be adopted to constitute a high-power-density dc transformer. However, when employing conventional phase-shifted (PS) control strategy, zero-voltage switching (ZVS) turn-on is easily lost under light-load voltage-mismatching situations. Hence, this...
Efficiency and leakage current are two major issues for transformerless grid-connected inverters (TLI). Soft-switching technologies can reduce switching losses be applied in TLIs. Herein, a zero-voltage-transition H5 type (ZVT-H5) inverter with soft turn-on turn-off transitions of high-frequency main switches is derived from basic resonant tanks. Compared the hard-switching (HS-H5) inverter, conversion efficiency ZVT-H5 significantly improved. Moreover, reverse recovery problem freewheeling...
Aiming at the problems of complex power distribution and difficult adjustment in active network, a low-cost, harmonic-free, low-loss electromagnetic Rotating Power Flow Controller (RPFC) scheme is proposed. First, topology, working principle, equivalent circuit RPFC are introduced, steady-state characteristics studied, voltage source model containing lines established. On this basis, order to solve such as over limit, phase angle difference, line flexible closed-loop closing, control an...
Aiming at the problem of low photovoltaic prediction accuracy, a short-term power method based on fuzzy C-Means(FCM)- extreme gradient boosting (XGBoost)- gate recurrent unit (GRU) weather classification is proposed. First select key meteorological factors as clustering features, then use FCM for cluster analysis, divide historical data into sunny, cloudy, rainy and weather, construct XGBoost-GRU combined forecasts four types The model predicts output power. Finally, proposed in this paper...
This paper presents a data-driven multi-time scale coordinated dispatch method for flexible interconnection low-voltage distribution station areas (FDSA). Firstly, the basic structure and application prospects of FDSA are given, an economic model was established to minimize total operating cost while accounting transformers(DTs), energy storage systems (ESS), distributed photovoltaic(PV) generation, loads, charging piles electric vehicles (EV). Then, stochastic programming robust...
In order to solve the problems of low power flow calculation accuracy and voltage overcrossing distribution network caused by large-scale distributed supply, a data-driven analysis volt/var optimization control strategy for are proposed in this paper. Firstly, model is proposed, nonlinear mapping relationship between state results described from perspective. Secondly, paper analyzes influence photovoltaic supply on network, establishes based supply. Then, basis reactive ensure safe stable...
Salix paraflabellaris is a procumbent alpine plant endemic to Hengduan Mountain in Yunnan Province, China. The complete mitochondrial genome sequence of this species circular molecule 637,893 bp size, encoding 34 protein-coding genes, 22 tRNA and 3 rRNA genes. Moreover, two large inverted repeat regions with length 9557 3524 were identified the genome. Phylogenetic analysis confirmed membership S. genus L., as well monophyly both Populus Salix.
Lightning strike failure is one of the causes voltage sags. This paper analyzes characteristics type lightning sag and summarizes 4 types' RMS waveforms including short-circuit fault, strike, transformer switching, induction motor starting, introduces five kinds feature indicators to establish identification matrix. Then, optimal decision tree support vector machine (DT-SVM) classifier based on particle swarm clustering used identify types sag. Training data test are from grid monitoring...