A5088479834- Electric Motor Design and Analysis
- Wind Turbine Control Systems
- Magnetic Bearings and Levitation Dynamics
- Induction Heating and Inverter Technology
- Electric and Hybrid Vehicle Technologies
- Multilevel Inverters and Converters
- Power Systems and Renewable Energy
- Advanced Battery Technologies Research
- Drilling and Well Engineering
- Microgrid Control and Optimization
- Magnetic Properties and Applications
- Hydraulic Fracturing and Reservoir Analysis
- Electric Vehicles and Infrastructure
- Electromagnetic Launch and Propulsion Technology
- Advanced Vision and Imaging
- Sensorless Control of Electric Motors
- Hydrocarbon exploration and reservoir analysis
- Metallurgy and Material Forming
- Engineering Applied Research
- Integrated Energy Systems Optimization
- Building Energy and Comfort Optimization
- Advanced Measurement and Detection Methods
- Advanced DC-DC Converters
- Electric Power System Optimization
- Advanced Image Processing Techniques
Chongqing University of Posts and Telecommunications
2021-2025
Huazhong University of Science and Technology
2013-2024
Xi'an University of Technology
2024
China XD Group (China)
2024
State Grid Corporation of China (China)
2024
General Hospital of Central Theater Command
2024
Sun Yat-sen University
2024
Southwest Jiaotong University
2024
Xi'an University of Architecture and Technology
2024
Sixth Affiliated Hospital of Sun Yat-sen University
2024
Gas fracturing technology for enhancing rock permeability is an area with considerable potential development. However, the complexity and variability of underground conditions mean that a variety physical parameters can affect outcome gas fracturing, temperature being critical factor cannot be overlooked. The presence field adds further to process gas-induced fracturing. To explore effects fields on technology, this paper employs numerical simulation software model extraction shale under...
The rotor structure is one of the key factors affecting performance brushless doubly fed machine (BDFM). This paper presents a "double-sine" wound for generator to reduce harmonic contents winding. Ideally, so-called double sine make magnetomotive force (MMF) space vector in set three-phase symmetric windings only containing two sinusoidal-waveform magnetic fields different pole pairs. According principles tooth and sinusoidal winding, double-sine winding designed be constituted by...
The vulnerability of biometric identification systems to presentation attacks, also a.k.a. spoof has received great attention from the biometrics community. Face attacks are particularly easy fabricate, because face image and videos obtain social media, most recognition rely on 2D RGB sensors only. To our best knowledge, all existing Presentation Attack Detection (PAD) research works focus solving problem in a close-set setup, even though it is an open-set real life where Unknown (UPAD)...
The homopolar inductor machine (HIM) has attracted recent interest in the field of flywheel energy storage system due to its merits robust rotor and low idling losses. In some situations, analytical methods a conventional wound-field synchronous (WSM) can be used analyze HIM, but clear explanation about why these done relationship between HIM WSM were not given literature. To address issues, this paper studies based on basic theoretical model equations. First, structure magnetic circuit...
ABSTRACT: The ultimate aim of hydraulic fracturing is to have a long and conductive flow path that extends from the wellbore into formation. effective fracture length part hydraulically propped which contributes production. difficulty in achieving economical production targets shale reservoirs at forefront many exploration companies. Fracture conductivity loss related to; proppant embedment under depletion, crushing, damage as result fluid, fines migration proppant-pack permeability-damage...
Bilinear pooling has been recently proposed as a feature encoding layer, which can be used after the convolutional layers of deep network, to improve performance in multiple vision tasks. Different from conventional global average or fully connected bilinear gathers 2nd order information translation invariant fashion. However, serious drawback this family is their dimensionality explosion. Approximate methods with compact properties have explored towards resolving weakness. Additionally,...
The rotor topologies have a great influence on the vibration characteristics of permanent magnet assisted synchronous reluctance machines (PM-SynRMs). In this article, vibrations PM-SynRMs with different are studied and compared. First, electromagnetic force harmonics been design rule about combination stator slots "rotor virtual slots" is given to achieve low vibration. Then, multiphysics model established calculate topologies. modal analysis conducted through finite element method...
The independent DC bus structure multiport power electronic transformer (IDBS-MPET) is a novel designed to integrate multiple sources and loads. Due the configuration of ports, which are directly constructed by parallel connection dual active bridge (DAB) converters, distribution loads among three phases becomes unbalanced. In cases where load at certain ports too high, this imbalance may lead over-modulation front-end H-bridge (HB). Since output port in IDBS-MPET constrained other paper...
Social recommendation leverages the social connections between users to mitigate issue of data sparsity and enhance quality. Although existing related works show their effectiveness, there remain two critical questions: i) The patterns preference interactions among are varied heterogeneous. Current models struggle accurately capture shifts from user in noisy environments. ii) Existing methods handle integration auxiliary information coarsely, potentially introducing noise leading biases...
Recommender systems in various applications often encounter the challenge of cold-start, which refers to how provide recommendations for completely new users. Cross-domain recommendation offers a solution address this cold-start issue by leveraging user interaction information from other domains and providing users target domain. However, applying classic two-tower model cross-domain scenarios pure proves challenging, most existing models adopt an embedding-mapping framework that lacks...
In this paper, a novel brushless doubly-fed machine (BDFM) with the double-sine wound rotor (DSW rotor) for stand-alone ship shaft generator application is designed. The performance studies of prototype DSW-rotor BDFM 4 and 2 pole pairs by using finite element analysis model experimental method are presented. magnetic fields, air-grip flux destiny distribution on-load characteristics investigated. experiment results validate theoretical all in paper show that has good performance.
The homopolar inductor alternator (HIA) has some merits over classical machines for applications such as a high-temperature superconducting machine and flywheel energy storage system. For the design of HIA, back electromotive force (back-EMF) air-gap flux density are two key parameters. Due to intrinsic three-dimensional (3-D) magnetic circuit structure, 3-D finite-element analysis (FEA) is required accurate modeling which is, however, very consuming. To solve this problem, 2-D analytical...
Homopolar inductor machine (HIM) has a wide range of applications in the field flywheel energy storage system and ship propulsion due to its merits simple structure, brushless exciting, low idling losses. However, three-dimensional finite element method (3-D FEM) is mainly used investigate electromagnetic performance indexes HIM intrinsic 3-D flux density distribution, which time-consuming. To facilitate analysis HIM, an analytical (AM) necessary, especially initial design stage. Hence, this...
Traditional solutions for human action recognition usually rely on sensor or video methods. However, these methods have some limitations, such as inconvenient portability, light intensity influence, privacy protection, etc. In this article, an RFID-based nonwearable scheme is proposed. order to reduce the occlusion effect of body signal and increase diversity reflected signal, a tags array constructed. The data phase RSSI are fused feature enhance data. Furthermore, combined processing...
Homopolar inductor machines (HIMs) are promising candidates of the pulsed alternator for application high power supplies. However, a single HIM can hardly serve as both and motor, because voltage frequency usually much higher than those motor. Thus, prime motor is needed to drag alternator, which makes system rather complex. To simplify structure system, this paper proposes novel four-stator-core (FSCHIM) consisting an First, configuration operation principle FSCHIM introduced. Second,...
The homopolar inductor machine (HIM) is of particular interest in the field flywheel energy storage system, where it has potential to significantly reduce self-discharge associated with magnetic losses. However, conventional HIM suffers from low power and torque density due its unipolar air-gap flux density. Besides, limited by cross section rotor, rotor diameter maximum tip speed rotor. Thus, effective length should be within a certain range, which constrains output stored HIM. To solve...
<italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Objective:</i> Open-sided field-free line magnetic particle imaging (OS FFL MPI) is a novel medical system configuration that has received significant attention in recent years. However, the measurement-based matrix (SM) image reconstruction for OS MPI typically requires multiple angle calibration (MAC), which time-consuming practice. xmlns:xlink="http://www.w3.org/1999/xlink">Methods:</i> To...
A key feature of unconventional shale reservoirs is low permeability.On average, only 10% original oil in place and 25% gas produced from these reservoirs.Understanding the mechanisms behind fracture conductivity past first couple years production still an ongoing research topic, as most such report fast massive declines.Hydraulic fracturing indispensable for stimulating low-permeability rocks economical reservoir shales.In contrast, subsurface sequestration storage fluids including...