A5101570041- HVDC Systems and Fault Protection
- Electric Motor Design and Analysis
- High-Voltage Power Transmission Systems
- Sensorless Control of Electric Motors
- Perovskite Materials and Applications
- Conducting polymers and applications
- Power Systems Fault Detection
- Magnetic Bearings and Levitation Dynamics
- Energetic Materials and Combustion
- Wind Turbine Control Systems
- Advancements in Battery Materials
- Smart Grid and Power Systems
- Organic Light-Emitting Diodes Research
- Quantum Dots Synthesis And Properties
- Extraction and Separation Processes
- Full-Duplex Wireless Communications
- Advanced Battery Technologies Research
- Fullerene Chemistry and Applications
- Aerogels and thermal insulation
- Railway Engineering and Dynamics
- Advanced Memory and Neural Computing
- Real-time simulation and control systems
- Direction-of-Arrival Estimation Techniques
- Power Quality and Harmonics
- Optical Coatings and Gratings
Nanjing Tech University
2024-2025
Beijing Jiaotong University
2024
Nanjing University of Science and Technology
2012-2024
Jiangsu University
2021
State Grid Corporation of China (China)
2019
North China Electric Power University
2011-2018
State Grid Hunan Electric Power Company Limited
2018
China Academy of Railway Sciences
2018
Hunan Xiangdian Test Research Institute (China)
2018
Shanghai Jiao Tong University
2011
In this paper, a short-circuit fault-tolerant operation control strategy of dual-winding permanent-magnet motor (DWPMM) under the four-quadrant condition for electrical flight surface actuator application is proposed and investigated. By comparative analysis current drive system, it can be concluded that DWPMM system suitable application. However, lacks research on condition. Then, based The experimental results show achieve high performance with fault operational
This paper utilizes trajectory data of electric taxis in Shenzhen to first study the driving characteristics from different indicators such as travel/driving speed, overspeed ratio, and amplitude. A combination weighting VlseKriterijumska Optimizacija I Kompromisno Resenje (VIKOR) evaluation method based on Nash equilibrium is constructed comprehensively assess operation safety various spatiotemporal scenarios. The results show that average speed amplitude battery 39.14 km/h 22.78%, which...
Perovskite light-emitting diodes have drawn great attention in the fields of displays and lighting, especially for applications requiring high efficiency brightness. While three-dimensional perovskite hold promise achieving higher brightness compared to low-dimensional counterparts, efficient blue remained a challenge due defect formation during disordered crystallization multiple A-cation perovskite. Here we demonstrate an all-site alloy method that enables sequential A-site doping growth...
Abstract Carbazole‐derived self‐assembled monolayers (SAMs) with excellent hole‐extraction and injection properties are promising hole‐transporting materials for perovskite optoelectronic devices, including solar cells (PSCs) light‐emitting diodes (PeLEDs). The performance thermal stability of these SAMs heavily influenced by their chemical structure. Herein, the construction fused carbazole‐based is proposed expanding π‐conjugation carbazole unit application in PSCs PeLEDs. Three...
We demonstrate a facile approach for the architecture of multifunctional bilayer thin films which show both antireflection and near-infrared (NIR) luminescence. NIR luminescence YVO4:Yb3+ transparent film nanoporous SiO2 were successively built on slide glass. Intense emission around 900–1100 nm has been obtained, is assigned to electronic transition 2F7/2→2F5/2 Yb3+, meanwhile, maximum transmittance reached as high ∼95%, whereas that glass substrate ∼91%. It sought candidate material c-Si...
Quasi-two-dimensional (2D) perovskites are notable for their diverse formulations and environmental stability. However, solution-processed quasi-2D often exhibit inherent multiple-quantum-well structures with broad phase distributions, limiting efficiency in photovoltaic applications. Here, we demonstrate that incorporating rubidium ions effectively narrows the distribution perovskite by accelerating formation of n = 1 2D during initial crystallization stage. This leads to a decrease...
In order to predict accurately the radio frequency interference produced by HVDC voltage source converter(VSC-HVDC) valve, based on a ±320kV modular multilevel converter (MMC-HVDC) station in China, calculation model was established using method of moments. Electromagnetic characteristic analyzed this paper. The near electric field distribution and far propagation were calculated different frequencies. Finally, comparison between electromagnetic results RFI limits HV MV substations at 200...
Biased magnetic flux produced by a permanent magnet can reduce the power consumption of suspension system in bearingless motors or bearings. However, ability to generate biased with single tends be saturated increase magnetising width. In order solve above problem, an axially superposed motor, which consists 12/8 reluctance motor for producing torque and two magnets desired density is present. The structure working principle are introduced, electromagnetic characteristics analysed finite...
In VSC-HVDC converter station, the level of electromagnetic interference at station directly affects control system and protection system. Every fast firing breaking process IGBT leads to an transient process, as well field with high frequency wide spectrum. this paper, conducted on both sides AC / DC was studied; radiation electric near single-stage valve tower copper bar PCB board are measured analyzed.
Track circuit is an important basic equipment in the high-speed railway, which supervises track occupancy and transmits train operation information. The mechanical insulation joint limits speed introduces safety hidden danger. Jointless adopts electrical tuning unit to replace insulation, realizes seamless connection of track. disconnection inspected. jointless increases improves anti-interference ability.
For power distribution systems, recognizing the single-phase ground fault is very difficult because there are several faults with similar features. This paper presents a novel method that can help to overcome this difficulty. The idea evolution process of whole, which composed stages including transient state, stable state and others. Meanwhile it describes in time domain frequency domain, find out characteristic processing fault. In same time, divided into presented statue faults....
The increasing popularity of electric vehicles (EVs) has given rise to concerns regarding emerging safety challenges. To address this, an enhanced spatio-temporal kernel density estimation (STKDE) method is developed, which leverages GIS technologies analyze the temporal evolution EV accidents across different locations. Our approach introduces several innovations: (1) incorporation network distance overestimation associated with conventional Euclidean distance; (2) Integration a Severity...
To improve the ability of reactive power support at Ultra High Voltage Direct Current (UHVDC) project sending and receiving terminals, State Grid Corporation will install large dual internal water cooled synchronous condensers which gives high requirements in transient dynamic characteristics. This paper discusses design ventilation cooling system loss coil. calculates temperature rise stator rotor.
With the development of power system, rapid and accurate detection harmonic reactive currents is premise compensation suppression. MATLAB software, a research on simulation improvement method based instantaneous theory carried out. The result indicates that ¡ P —¡ q have faster response time better real-time.
The temperature of electric initiating device under constant current has the vital significance to security and firing performance electrical explosive initiator. In this paper, bridgewire semiconductor bridge which were representative in devices (EED) was studied using infrared microscopic thermographer. curve with change is obtained. resluts indicate that increases form quadratic parabola rises slower than bridgewire. According experimental analysis, it found reason attributed better heat...
Vector control technology is regarded as a kind of controlling manner AC asynchronous motor and it has already become the first method high-performance variable-frequency speed regulating system. According to basic principles induction vector control, this paper constructs simulation model rotor magnetic field oriented system based on MATLAB software. The analyzes operation basis mutation given sudden load. result including oscillogram speed, torque,three phase current two were presented...
The traditional suspension force analysis of bearingless motors is mainly based on electromotor mode. However, the generator mode also an important component in energy conversion for flywheel batteries, and stable rotor is beneficial to reduce loss improve power quality. Therefore, performance generator mode need to be analyzed deeply. In this paper, a new brushless DC (BLDC) motor with 12-slot 4-pole structure is proposed batteries. Firstly, principle generation introduced. Then, the...
A control strategy and implement method for the no-load cutting-in of double-fed induction generator in power system are introduced. The paper analyze basal principle DFIG under condition, build correspondent mathematical model. Then according to model, propose a on basis magnetic flux linkage vector orientation control. Using simulation software set up result showed that: grid connection can effectively keep stator voltage track time-varing voltage. At interconnection instant, impulse...
The doubly fed induction generator (DFIG) is an important component of wind turbine systems,so the fault analysis great necessary.This paper shows a way to features stator inter-short circuit fault,which based on multi-circuit theory.The inter-turn short in are analyzed this paper,deeply and thoroughly.Then multi-loop model was carried out simulate 5.5kW DFIG ,which normal conditions cases circuit,respectively.A fourier transformation applied simulation results,especially about current.
Abstract not Available.
Abstract not Available.