A5101408877- Electric and Hybrid Vehicle Technologies
- Advanced Battery Technologies Research
- Vehicle Dynamics and Control Systems
- Industrial Technology and Control Systems
- Real-time simulation and control systems
- Advanced Sensor and Control Systems
- Advanced DC-DC Converters
- Electric Vehicles and Infrastructure
- Advanced Algorithms and Applications
- Multilevel Inverters and Converters
- Sensorless Control of Electric Motors
- Electric Motor Design and Analysis
- Mechanical Engineering and Vibrations Research
- Magnetic Bearings and Levitation Dynamics
- Fault Detection and Control Systems
- Advanced Statistical Methods and Models
- Advancements in Battery Materials
- Machine Fault Diagnosis Techniques
- Microgrid Control and Optimization
- Engineering Diagnostics and Reliability
- Soil Mechanics and Vehicle Dynamics
- Geoscience and Mining Technology
- HVDC Systems and Fault Protection
- Metal Alloys Wear and Properties
- Adaptive Control of Nonlinear Systems
Beijing Institute of Technology
2013-2025
Guangxi University of Science and Technology
2023-2025
Central South University
2022-2025
Hubei University
2024
Wuhan University
2022-2023
Southwest Jiaotong University
2023
Shandong University
2019
China Electric Power Research Institute
2016
North China Electric Power University
2016
Beijing Proteome Research Center
2015
A lumped parameter thermal analysis of permanent magnet motor by considering real driving duty cycle is presented. As motors electric vehicle, exhibit high efficiency and power density. However, they are susceptible to suffer irreversible demagnetization insulation failure coils under severe condition. Therefore, it essential accurately evaluate heat losses precisely predict temperature distribution in the cycle. In this paper, an improved core loss model employed implemented using finite...
It is difficult to estimate Lithium-ion battery state of charge (SOC) accurately. By using extended Kalman filter (EKF).the interference system noise can be effectively reduced, which improved the estimation accuracy. First, model was studied and a Thevenin established. Then appropriate charge-and-discharge experiments were performed identify parameters model. Finally EKF applied show that has high precision.
Power batteries are the core of electric vehicles, but minor faults can easily cause accidents; therefore, fault diagnosis is very important. In order to improve practicality battery methods, a method for lithium-ion in vehicles based on multi-method fusion big data proposed. Firstly, anomalies removed and early analysis performed by t-distribution random neighborhood embedding (t-Sne) wavelet transform denoising. Then, different features vehicle that have large influence identified factor...
Unmanned aerial vehicles (UAVs) have demonstrated immense value in the military sector. This research proposes use of Trifluoromethane as a novel cold ejection medium. Trifluoromethane, being easily compressible, exhibiting high safety and low infrared characteristics, is well-suited for small-volume high-pressure chambers. The feasibility UAV has been confirmed through experiment. Furthermore, thermodynamic numerical model established medium to investigate effects key parameters on...
Abstract The establishment of an effective soft-tissue seal is crucial for the long-term stability implant-soft tissue interface. surface properties dental implants play a critical role in modulating early cellular responses, facilitating formation stable seal. This study aims to investigate effects 172 nm vacuum ultraviolet (VUV) chair-side irradiation on physicochemical smooth surfaces zirconia, pure titanium and alloy (Ti6Al4V) implants. Furthermore, it explores how these changes...
Discrete space vector modulation (DSVM) and weighting factor elimination have been investigated to improve the system performance of finite-set model predictive control (FS-MPC). However, existing DSVM-based FS-MPC without factors for three-level inverters suffers from high computational burden, low algorithm flexibility, substantially narrowed operating range. To address these issues, this article proposes a novel with virtual medium voltage vectors (MVVs), which greatly reduces current...
In this paper, the diagnosis method based on wavelet and neural network is proposed. This needs not to collect a large number of data, but simplifies diagnostic process while ensuring accuracy result. The three-phase stator current data were decomposed by db6 function. It does require introduction additional detection equipment, also avoid intrusion that may destruct motor. study has significance in engineering application development on-line system. research fault system will promote...
This paper aims to propose a novel charging method for the lithium-ion batteries with negative pulse theory. Firstly second order Thevenin model was built analyze internal parameters of battery. And characteristics polarization voltage were also discussed. The studied and experiment result showed that state battery can be improved by using this method.
Energy storage and power boost are major problems in the development of electric vehicles (EV). Installing a super-capacitor as an auxiliary source to improve performance is feasible realistic solution. In this paper, structure multi-energy system principles flow multi energy were introduced first, explaining how different sources work situations. A model vehicle with battery super-capacitor, based on Matlab/Simulink was built up. The validated by comparing simulation results actual data...
Argonaute 2 (AGO2), a central component of RNA-induced silencing complex, plays critical roles in cancer. We examined whether the single nucleotide polymorphisms (SNPs) AGO2 were related to risk nasopharyngeal carcinoma (NPC). Twenty-five tag SNPs within genotyped Guangxi population consisting 855 NPC patients and 1036 controls. The significantly associated with further replicated Guangdong 996 972 Functional experiments conducted examine biologic NPC. A increased advanced lymph node...
This paper designed a DC/DC converter applied to electric vehicles, which uses the strategy of phase-shift full-bridge and can realize zero voltage conduction power switches. carried on brief introduction topological structure phase-shifted ZVS converter. A prototype was manufactured processed series experiments. The final experimental results were consistent with simulation, meet design requirements, prove feasibility scheme.
This paper aimed to propose a novel charging method for the lithium-ion batteries with negative pulse theory. Firstly second order Thevenin model was built determine internal parameters of battery. On foundation parameters, this analysed characteristics polarization voltage. And then studied according change regulation Finally experiment result showed feasibility method.
This paper analyzes the characteristics of inter-turn short circuit fault based on permanent magnet synchronous motor (PMSM) structure algorithm. The finite element model PMSM is established for electric vehicle application. Simulations are performed healthy and faulty with different severity faults operate modes. Then influences magnetic field various parameters motors extracts feature vector detecting fault. It also proves that method analysis (FEA) can provide a scientific accurate basis...
After the reference of straight line stability control strategy four-wheel drive vehicle, this paper proposes a algorithm combining sliding mode variable structure and optimization method. The is mainly divided into upper generalized moment calculation based on controller lower torque distribution algorithm, also including slip rates PID to ensure control. This establishes combined model CarSim MATLAB, tests verify validation through vehicle test-bed RT_LAB. simulation experimental results...
A study on electromagnetic interference restraining of electrical vehicle charging system is presented. The reason why the would generate interference, propagation ways and hazard are presented in this paper, through analysis structure control strategy system. And it takes corresponding technology to restrain such as selection power devices, grounding, shielding technology, filter isolation mechanism design, cables reasonable distributing. results emission test show that designed by...
The model of speed sensor-less vector control system induction motors has been built on the AMEsim and Matlab/Simulink platform, Simulink can be connected by creating an S-function interface. results Co-simulation indicate that algorithms reference adaptive (MRAS) based counter electromotive force (EMF) estimate with some accuracy in static dynamic conditions make electro-hydraulic power steering (EHPS) offer assist as quickly sensor-based system. So proposed are correct have reached expectation.
This paper proposes a methodology of phase to short-circuits fault diagnosis in permanent magnet synchronous motors (PMSM). The integrated network basis such method is composed with BP and two Elman networks. three sub-networks respectively output their own result. A special simulation was applied find relevant fault. experimental data acquired by acquisition system validate the potential provide helpful reliable results.
Speed identification is important to apply the permanent magnet synchronous motor system on situation that need speed signal but without sensor. Taking dynamic mathematics model as investigated subject, set up adaptive of enhanced magnetism basic reference and POPOV's hyperstability theory. Derive equivalence nonlinear feedback system. Prove its stability follow character. There no pure integration, moment inertia load in estimation mechanic verified studied algorithms performance when works...
For the problem of large power loss and low efficiency tracked travelling unit high-speed vehicle, each part is first analyzed in theoretically. Then simulation analysis done with help multi-body dynamics software RecurDyn Matlab, from which we get proportion loss. The results show that sprocket impact make up vast majority total when driving at a high speed. conclusion this paper can provide theoretical basis for improving besides, it also contribute to an effective way unit.