A5026042389- Railway Systems and Energy Efficiency
- Railway Engineering and Dynamics
- Transportation Planning and Optimization
- Electric and Hybrid Vehicle Technologies
- Organic Electronics and Photovoltaics
- Electric Vehicles and Infrastructure
- Advanced Battery Technologies Research
- Conducting polymers and applications
- Microgrid Control and Optimization
- Electrical Contact Performance and Analysis
- Transportation and Mobility Innovations
- Thin-Film Transistor Technologies
- Complex Network Analysis Techniques
- Smart Grid Energy Management
- Optimal Power Flow Distribution
- Opinion Dynamics and Social Influence
- Organic Light-Emitting Diodes Research
- Maritime Transport Emissions and Efficiency
- Fluid Dynamics and Vibration Analysis
- Metalloenzymes and iron-sulfur proteins
- Inorganic Chemistry and Materials
- Wind and Air Flow Studies
- Semiconductor materials and devices
- Robotic Path Planning Algorithms
- Software-Defined Networks and 5G
South China University of Technology
2019-2025
Xiamen University of Technology
2025
China Construction Bank
2024
Guangdong Ocean University
2024
Xi’an Jiaotong-Liverpool University
2014-2022
Sun Yat-sen University
2022
Flexterra (United States)
2019-2021
Beijing Jiaotong University
2021
University of Liverpool
2018
Northeastern University
2016
An energy-efficient train trajectory describing the motion of a single can be used as an input to driver guidance system or automatic control system. The solution for best is subject certain operational, geographic, and physical constraints. There are two types strategies commonly applied obtain trajectory. One allow coast, thus using its available time margin save energy. other one speed dynamically while maintaining required journey time. This paper proposes distance-based searching model,...
Regenerative braking improves the energy efficiency of railway transportation by converting kinetic into electric energy. This paper proposes a method to apply Bellman-Ford (BF) algorithm search for train speed trajectory increase total regenerative (RBE) in blended mode with both and mechanical forces available. The BF is applied discretized train-state model. A typical suburban has been modeled studied under real engineering scenarios involving changing gradients, journey time, limits. It...
In this paper a mixed integer quadratic programming (MIQP) is proposed to solve the dynamic economic dispatch (DED) with valve-point effect (VPE) where non-linear and non-smooth cost caused by VPE piecewise linearized. However if DED directly solved MIQP in single step, optimization suffers convergence stagnancy will run out of memory. multi-step method, warm start technique range restriction scheme are combined MIQP. The process can then break computation efficiency be greatly improved....
Top-gate n-TFTs and CMOS circuits on plastic substrates based solution-processed n- p-channel semiconductors polymeric dielectrics have been fabricated. These unencapsulated devices exhibit good performance characteristics in ambient.
Despite their favorable electronic and structural properties, the synthetic development incorporation of thiazole-based building blocks into n-type semiconductors has lagged behind that other π-deficient blocks. Since thiazole insertion π-conjugated systems is synthetically more demanding, continuous research efforts are essential to underscore properties in electron-transporting devices. Here, we report design, synthesis, characterization a new series thiazole–thiophene tetra- (1 2)...
A centralized reactive power compensation system is proposed for low voltage (LV) distribution networks. It can be connected with any bus which needs power. The current industry practice to locally install maintain the local and factor. By centralizing capacitor banks together, it help voltages factors as well reduce cable losses. Besides, easily expanded meet future load increase. reasonably sized will capable of meeting requirements network optimization algorithm in this paper find optimal...
Rail transportation is used extensively in urban areas to reduce CO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> emission and increase road capacity. As a result, the energy efficiency of rail becoming popular research topic. Energy-efficient train operation involves four types control: maximal traction, cruising, coasting, braking. With rapid development storage devices (ESDs), this paper aims develop an integrated optimization model...
For improving the energy efficiency of railway systems, onboard storage devices (OESDs) have been applied to assist traction and recover regenerative energy. This article aims address optimal sizing problem OESDs minimize catenary consumption for practical train operations. By employing a mixed-integer linear programming (MILP) model based on flow law conservation energy, three types widely used OESD-supercapacitors, Li-ion batteries, flywheels-have studied in real-world case Beijing...
The optimization of train trajectory and timetable offers two effective methods energy-efficient operations. Most traditional research optimizes them separately thus the global optimality cannot be achieved. Previous work has mainly concentrated on minimizing mechanical energy consumption trains, not electrical energy. This paper aims to develop an integrated model optimize timetable, which includes both achieve minimum consumption. AC power supply system is first proposed calculate...
Improved fuel consumption and lower emissions are two of the key objectives for future transportation. Hybrid electric vehicles (HEVs), in which or more power systems combined, can meet these through capture reuse regenerated braking energy optimized use prime mover. However, complicated power-management strategies required such vehicles. This paper explores potential applying to advanced a diesel multiple-unit (DMU) train. These types have multiple engines that commonly operated homogenous...
The electron acceptor building block for π-conjugated copolymers, 3,6-dithiophen-2-yl-diketopyrrolo[3,2-b]pyrrole (isoDPPT), was synthesized following two routes. comparison between isoDPPT and widely investigated 3,6-dithiophen-2-yl-diketopyrrolo[3,4-c]pyrrole (DPPT) in terms of molecular orbital computations, single crystal X-ray diffraction, optical absorption cyclic voltammogram utilized to elucidate structural electronic structure differences the cores. Both units are found be planar...
The inexorable increase in energy demand around the world has put energy-saving technology hot spot for railway transportation. Train speed trajectory optimization based on optimal control, coasting and collaborative control inside systems is a popular methodology to enhance efficiency. This paper studies special interesting problem, i.e., partial train proposes complete mathematical model where mixed-integer linear programming algorithm can be directly applied. During transient operation...
The integration of hybrid energy storage systems (HESS) in alternating current (AC) electrified railway is attracting widespread interest. However, little attention has been paid to the interaction optimal size and daily dispatch HESS within entire project period. Therefore, a novel bi-level model traction substation management (RTSEM) system developed, which includes slave level diurnal master sizing. formulated as mixed integer linear programming (MILP) by coordinating HESS, load,...
Electric vehicle (EV) as dynamic energy storage systems could provide ancillary services to the grids. The aggregator coordinate charging/discharging of EV fleets attend electricity market get profits. However, profits are threatened by uncertainty market. In this study, an bidding strategy in day-ahead (DAM) is proposed, both reserve capacity and deployment considered. novelty study that: (i) developments addressed terms time amount. (ii) Scenario-based stochastic programming method used...
This article proposes a novel two-step approach to concurrently optimize the train operation, timetable, and energy management strategy of onboard storage device (OESD) minimize net consumption for whole urban railway line. In Step 1, approximating functions representing minimum each specific interstation operation is obtained by data fitting based on previous research outcomes. 2, optimal running time, initial state (ISOE) OESD, speed profiles, discharge/charge OESD during journey at...
Due to their high flexibility, low cost, and energy-saving advantages, applying Unmanned Aerial Vehicles (UAVs) in logistics is a promising field achieve better social economic benefits. Since UAVs’ energy storage capacity generally low, it essential reduce costs improve system’s efficiency. In this paper, we proposed novel trajectory planning framework the optimal with minimum amount of consumption under constraints obstacles static environment. Based on UAV dynamics, first derived required...
We report two new low band-gap conjugated polymers containing dipyrrolo[2,3-b:2′,3′-e]pyrazine-2,6(1H,5H)-dione (PzDP), PPzDPDP-BT and PPzDPDP-TT, both showing ambipolar transport in organic thin film transistors (OTFTs), with hole mobility up to 0.066 cm2 V−1 s−1, electron 0.021 high current on-to-off ratios of 105–106.
A family of six n-channel organic semiconductors (1–6) based on the N,N′-dialkyl-2,3:6,7-anthracenedicarboximide (ADI) core was synthesized and characterized. These new are functionalized with n-octyl (-n-C8H17), 1H,1H-perfluorobutyl (-n-CH2C3F7), cyano (–CN), bromo (–Br) substituents, which results in wide HOMO LUMO energy variations (∼1 eV) but negligible optical absorbance (λmax = 418–436 nm) visible region solar spectrum. Organic thin-film transistors (OTFTs) were fabricated via...
In organic field-effect transistors, the structure of constituent molecules can be tailored to minimize disorder experienced by charge carriers. Experiments on two perylene derivatives show that suppressed attaching longer core substituents – thereby reducing potential fluctuations in transistor channel and increasing mobility activated regime without altering intrinsic transport properties. As a service our authors readers, this journal provides supporting information supplied authors. Such...
Metal oxide (MO) semiconductor thin films prepared from solution typically require multiple hours of thermal annealing to achieve optimal lattice densification, efficient charge transport, and stable device operation, presenting a major barrier roll-to-roll manufacturing. Here, we report highly efficient, cofuel-assisted scalable combustion blade-coating (CBC) process for MO film growth, which involves introducing both fluorinated fuel preannealing step remove deleterious organic...