A5100652004- Microgrid Control and Optimization
- Islanding Detection in Power Systems
- Vibration and Dynamic Analysis
- Power Systems and Renewable Energy
- Fluid Dynamics and Vibration Analysis
- EEG and Brain-Computer Interfaces
- Multilevel Inverters and Converters
- Stroke Rehabilitation and Recovery
- HVDC Systems and Fault Protection
- Wind Turbine Control Systems
- Optimization and Packing Problems
- Transcranial Magnetic Stimulation Studies
- Advanced Manufacturing and Logistics Optimization
- Neurological disorders and treatments
- Nonlinear Dynamics and Pattern Formation
- Advanced Measurement and Metrology Techniques
- IoT and Edge/Fog Computing
- Traditional Chinese Medicine Studies
- Metaheuristic Optimization Algorithms Research
- Muscle activation and electromyography studies
- stochastic dynamics and bifurcation
- Functional Brain Connectivity Studies
- Technology and Security Systems
- Thermal Analysis in Power Transmission
- Ginseng Biological Effects and Applications
First Affiliated Hospital of Xi'an Jiaotong University
2018-2025
Changsha University of Science and Technology
2024
Chengdu University of Traditional Chinese Medicine
2024
Guiyang Medical University
2024
Tangshan College
2020-2023
Shanxi University
2023
China Southern Power Grid (China)
2023
Xi'an Jiaotong University
2006-2022
Yanshan University
2021
Wuhan University
2013-2019
Three-phase voltage source converters (VSCs) are commonly used as power flow interface in ac/dc hybrid systems. The ac grid suffers from unpredictable short-circuit faults and fluctuations, causing undesirable dips. dips may last for a short time or long duration, vary the working conditions of VSCs. Due to their nonlinear characteristics, VSCs enter abnormal operating mode response In this paper, transient three-phase under practical is studied catastrophic bifurcation phenomenon identified...
Grid-forming converters, taking droop-controlled converters and virtual synchronous generators (VSGs) as typical examples, have shown great promise the interfaces between renewable energy sources future power-electronics-based power system. However, coupling active reactive will adversely affect dynamic performance stability of grid-forming converters. In order to facilitate quantitatively analyzing assessing characteristics various types strategies, this article develops a unified model...
Damping control plays an important role in suppressing the oscillation modes of virtual synchronous generators (VSGs). The most widely used damping method through a frequency deviation feedback path is confronted with multiple challenging inherent contradictions among different objectives, resulting seriously degraded performance VSGs. To resolve these fundamentally, this article proposes novel phase feedforward (PFD) for VSG from perspective restructuring controller. It replaces traditional...
The monosynaptic cortico-motoneuronal connections suggest the possibility of individual motor units (MUs) receiving independent commands from cortex. However, previous studies that used corticomuscular coherence (CMC) between electroencephalogram (EEG) signals and electromyogram (EMG) have not directly explored corticospinal functionality at single motoneuron level. objective this study is to find out whether synchronous activities exist cortex MUs. Corticomuscular was calculated EEG MU...
A three‐degree‐of‐freedom model is developed to comprehensively describe and predict different galloping behavior observed on a single iced, electrical transmission line. Interactions are accommodated between line's plunge, twist, swing in the along‐wind direction. Eccentricity of cross section also considered longitudinal static stiffnesses adjacent spans included. The initiating conditions for derived closed form. For parameters causing galloping, perturbation techniques employed derive...
Except for the benefits of mimicking synchronous generators, virtual generators (VSGs) still face particular small- and large-disturbance stability problems in practical applications. Therein, is a much more dramatic intractable problem, such as short circuit or line tripping. Accordingly, this article explores challenging problem from perspective output impedance optimization VSGs. First, focusing on potential risk overcurrent during electromagnetic process, dynamic performances different...
Internal nonresonant and resonant galloping of an iced electrical transmission line is studied by employing a three‐degree‐of‐freedom (3DOF) model formulated in part I where the conditions for initiation governing bifurcation equations were derived dynamic motions. Perturbation techniques are employed so that can be manipulated algebraically to obtain explicit expressions periodic quasiperiodic solutions as well their stability conditions. For case, sequent boundaries show secondary tertiary...
Brain-computer interfaces (BCIs) are currently integrated into traditional rehabilitation interventions after stroke. Although BCIs bring many benefits to the process, their effects limited since patients cannot concentrate during training. Despite this outcome post-stroke motor-attention dual-task training using has remained mostly unexplored. This study was a randomized placebo-controlled blinded-endpoint clinical trial investigate of BCI-controlled pedaling system (BCI-PT) on motor and...
Abstract Rolling bearings are essential in rotating machinery, and accurate remaining useful life (RUL) predictions necessary for effective maintenance optimal performance. Poor trend of health indicators (HI) operating condition variations can reduce the reliability accuracy RUL predictions.To address these challenges, we propose a deep transfer network based on dual-task learning predicting rolling (DTLDL-RUL). This framework integrates status assessment prediction, leveraging task...
Purpose: Motor deficits after stroke are supposed to arise from the reduced neural drive brain muscles. This study aimed demonstrate feasibility of reflecting motor function improvement with measurement corticomuscular coherence (CMC) in an individual subject. Method: A patient was recruited participate experiment before and recovery his paretic upper limb respectively. An elbow flexion task a constant muscle contraction level involved experiment. Electromyography (EMG)...
Abstract Virtual synchronous generator (VSG) has been widely studied owing to its inertia support the grid. However, stability of VSG is not analysed accurately for actual applications in previous studies that overlook voltage and current inner loops VSG. Since are essential control output practical engineering, this study focuses on analysis interconnection system grid by sequence impedance modelling with loops. The complete model built compared VSG‐ignoring loops, then based that. It shows...
Purpose: The aim of the study was to confirm whether paraffin therapy offer clinical value in treatment spasticity due stroke. Methods: Fifty-two patients with upper limb were included. randomized into experimental group (n = 27) and control placebo 25). outcome measures besides temperature examination undertaken at time points 0 (T0), 2 (T1) 4 weeks (T2) following treatment. extent measured using Modified Ashworth Score (MAS) during passive movement shoulder, elbow, wrist finger joints....
Over-subscription, that is, being assigned too many things to do, is commonly encountered in temporal scheduling problems. As human beings, we often want do more than can actually and underestimate how long it takes perform each task. Decision makers benefit from aids identify when these failure situations are likely, the root causes of failures, resolutions failures. In this paper, present a decision assistant helps users resolve over-subscribed The system works like an experienced advisor...
Abstract The operational stability of grid‐connected converters is affected by unbalanced grid voltage, which often leads to overcurrent. traditional control method maintains the grid‐into current within rated limit adjusting reference value. However, this limits output active power and affects their reliability, can cause shortage or even disconnection grid. To deal with issue, paper proposes an effective strategy. First, interaction between AC DC sides under voltage conditions analysed....
Uncertainty representation and management are important in prognostics health (PHM). This paper first introduces concept of uncertainty as well the importance PHM. And processing is mainly summarized, containing representation, estimation management. The main approaches for processing, such probability theory, fuzzy set evidence theory rough analyized systematically detail.
This paper presents a hybrid simulated annealing algorithm for container loading problem with boxes of different sizes and single loading. A basic heuristic is introduced to generate feasible solution from special structure called packing sequence. The uses encode as sequence, searches in the encoding space find an approximated optimal solution. computational experiments on 700 weakly heterogeneous benchmark show that our outperforms all previous methods average.
The application of LCL filters has become popular for inverters connected to the power grid due their advantages in harmonic current reductions. However, a distribution system is non-ideal, presenting itself as voltage source with significant impedance. This means that an inverter using filter may interact other grid-connected via non-ideal grid. In this paper, damping optimization reduce interaction studied three-phase (VSI). Simulation results show resonant oscillation occurs distributed...
In this paper, a new-style insulator structure is presented against the erosion and aging phenomenon of composite insulators. The middle parts insulators are two terminals porcelain results simulative calculation structural optimization indicate that new assembled installed with proper grading rings can furthest realize uniformity electric field distribution on It also effectively inhabit corona make full use resistance pollution tolerance