A5101672221- Microgrid Control and Optimization
- Advanced DC-DC Converters
- Multilevel Inverters and Converters
- Advanced Sensor and Control Systems
- Fire dynamics and safety research
- Evacuation and Crowd Dynamics
- Geomechanics and Mining Engineering
- Industrial Technology and Control Systems
- Fire effects on ecosystems
- Advanced Battery Technologies Research
- Textile materials and evaluations
- Electrodeposition and Electroless Coatings
- IoT-based Smart Home Systems
- Coal Combustion and Slurry Processing
- Supercapacitor Materials and Fabrication
- Silicon Carbide Semiconductor Technologies
- Metal and Thin Film Mechanics
- Electrocatalysts for Energy Conversion
- Metaheuristic Optimization Algorithms Research
- Dyeing and Modifying Textile Fibers
- Artificial Immune Systems Applications
- Smart Grid Security and Resilience
- Elevator Systems and Control
- Traffic Prediction and Management Techniques
- Advancements in Semiconductor Devices and Circuit Design
Kunming Institute of Precious Metals
2022-2025
Shandong University
2021-2024
China University of Mining and Technology
2023-2024
Taiyuan University of Science and Technology
2012
Hebei University of Engineering
2008-2011
Hebei University
2010
Multiple DC microgrids are interconnected to form a microgrid cluster, which can effectively improve the renewable energy consumption capacity and power supply reliability of cluster through sharing storage among participating microgrids. However, existing methods not able flexibly coordinate flows between connected by multiport converter. In this paper, distributed cooperative control method is proposed for with multiple voltage levels multi-port A multi-active-bridge (MAB) converter acts...
A hybrid energy-storage system (HESS), which fully utilizes the durability of energy-oriented storage devices and rapidity power-oriented devices, is an efficient solution to managing energy power legitimately symmetrically. Hence, research into these systems drawing more attention with substantial findings. battery–supercapacitor (BS-HESS) widely adopted in fields renewable integration, smart- micro-grids, integration systems, etc. Focusing on BS-HESS, this work we present a comprehensive...
Dual-active-bridge (DAB) converters are widely used in power conversion systems as interfaces. To operate under high-power, high-voltage, or high-current conditions, constructed by multiple series–parallel DAB modules promising solutions. Model-predictive control (MPC) is suitable for controlling complex structures such converters, it offers advantages, ease of multiobjective optimization, simple controller parameter design, and expansion, shows excellent dynamic performance. However, MPC...
Abstract This study investigates the deposition of tantalum (Ta) coatings on carbon foams using chemical vapor (CVD) method to enhance their compressive strength. Two types open-cell foams, CF-1 and CF-2, with different strut diameters, were examined. The morphology uniformity characterized, effect coating thickness strength was systematically analyzed. An empirical model proposed successfully validated, showing that is proportional square diameter. experimental results demonstrate...
A high-temperature-resistant and high-performance hafnium oxide (HfO2) coating for aerospace engines was developed. HfO2 thin film coatings were prepared by chemical vapor deposition (CVD) at 1200, 1250, 1300, 1350 °C, respectively. The crystal structure surface morphology of the films different temperatures studied X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force (AFM). effect temperature on mechanical properties means drainage method nanoindentation. results showed...
Smoke mass flow rate (SMFR) is an important factor for smoke control in tunnel fire. The presence of bifurcation structure can lead to the redistribution and distinctive characteristics. In current study, a relational expression SMFR branched was theoretically derived. A series numerical simulations with Fire Dynamics Simulator(FDS) were conducted investigate effects multiple factors on validate predictions. results indicated that T-shaped tunnel, amount flowing into branch mainly depends...
Precious metal electrical contact materials are pivotal in microelectronic devices due to their excellent chemical stability and properties. Their practical application is hindered by the strength, resistance, high cost. Multi-principal elements alloys (MPEAs) provide possibility develop cost-effective with enhanced mechanical To address this, a novel precious MPEA, PdAgCuAuPtZn alloy, designed, which exhibits significant solid solution strengthening aging effects. The ultimate tensile...
Understanding the characteristics of smoke layer thickness is vital for accurate fire detection, efficient exhaust and safe evacuation in tunnel fire. Nevertheless, flow tunnels with arched ceiling may show different from flat roof which usually studied. Theoretical analysis was conducted on under curved natural ventilation tunnel, further, numerical simulations were performed to elucidate verify mechanism. The results that mass rate positively correlated heat release rate(HRR) section...
Abstract New energy power prediction is an important part of the transition process from traditional system to new system. How improve accuracy while ensuring that data privacy not leaked issue needs be focused on. Based on this, this paper constructs a model integrating NGBoost and LSTM by screening optimal feature sequences as inputs, then encrypting transmission aggregation parameters finally testing evaluating scheme based real set. Experiments show proposed in only improves...
Dual active bridge (DAB) converters are widely used as a pivotal interface in fuel cell vehicle (FCV) electrical systems. For FCV systems, which usually require precise output voltage tracking performance and fast control dynamics, model predictive (MPC) becomes promising alternative. Classical MPC, using popular average modeling for state prediction, will inevitably present the bias, despite its dynamics. This phenomenon is particularly considerably large when parameter mismatch happens (it...
Dual-active-bridge (DAB) converters, as key interfaces, are widely used in high-frequency high-power energy storage systems. The efficiency of a DAB converter is critical issue, especially if the works under high frequency condition. Traditionally, optimization strategies mainly focus on optimizing turn-on switching loss. In this paper, we proposed novel strategy based extended phase-shift (EPS) modulation to reduce turn-off loss while maintaining property zero voltage switching. current...
This paper briefly describes the principle of frequency conversion inverter, highlighted application inverter in coal mine hoist, air compressor, fan. Frequency control devices with advanced performance, higher energy efficiency, not only improve performance electrical equipment coal, but also greatly save energy. Conducive to achievement production safety and savings consumption reduction.
Understanding the characteristics of smoke layer thickness is important for accurate fire detection, efficient exhaust and safe evacuation in tunnel fire. Nevertheless, flow tunnels with arched ceiling may show different from flat roof which usually studied. Theoretical analysis numerical simulations are performed to investigate movement behavior naturally ventilated ceiling. The results that mass rate will increase heat release rate(HRR) section radius. However, not significantly affected...
There is no verdict whether the axial pressure and radial in transportation pipeline for pasty materials equal. By theoretical analysis, difference between constant, which only relates to double cohesive force of materials. The experiments indicate that value little greater than pressure, numerical less 1%. Accordingly, measuring instead feasible engineering.