itoring platform of high-speed trains. To realize this system, a sustainable power source is indispen-sable. In this case, an ideal solution is to deploy a vibration-based energy harvester instead of batteries for the electrical supply of wireless sensors/devices, as
The electricity consumption profile of high-speed trains traveling between Beijing and Shanghai is predicted based on the schedule from September 10th, 2021, and 30 trains operated on that day. The first train left the Shanghai Hongqiao Station at 6:37 in the morning, and the last train arrived at Beijingnan Station at 11:18 at night; the total …
Traction power supply system (TPSS) sometimes suffers a short interruption, which will lead trains losing power during their operations. In this emergency situation, to ensure passenger safety, an effective way is to drive the train to a nearest station using on-board energy storage systems (OESS). This paper presents two methods to compute …
The reduction of the voltage imbalance by means of the use of balancing transformers has been comprehensively studied in literature [12, 13].Most of these works make use of simple formulae to calculate such impact. However, as [] states, this latter approach can underestimate its real value because it neglects the interaction between …
The paper analyses the alternatives for the power supply of a Hyperloop type railway transport. The particular case of the technology of the Spanish company …
If you''re considering using an outdoor energy storage power supply, there are a few things you need to take into account to make sure you choose the right one for your needs. In this blog post, we''ll outline the different types of outdoor energy storage power supplies and discuss the factors you need to consider when making your decision. By the end, you …
To improve the energy-efficiency of transport systems, it is necessary to investigate electric trains with on-board hybrid energy storage devices (HESDs), which …
Thanks to their higher switching frequency and lower losses, SiC power converters can facilitate energy storage systems onboard rail vehicles. As seen …
High-speed rail transportation utilizes 80–90% less energy and produces 3–4 times less pollution than air travel [30]. The goal of achieving net-zero global CO 2 emissions by 2050 must now be maintained by ensuring that the 2021 global emissions recovery was an anomaly and that sustainable investments paired with increased clean …
The situation in which a train passes through a tunnel and when two trains pass each other in a tunnel can be carried out using dynamic model tests (Yang et al., 2013, 2016). Wang et al. (2020), Bocciolone et al. …
This paper first examines the energy consumption sources and energy-saving measures of high-speed trains (HSTs). Then presents the EETO in HSRs, …
where (e) denotes the operational energy efficiency of all in-service trains or railway transportation systems, (N_{i,j,k}) denotes the number of passengers and the weight of freights delivered by the ith train from the jth station to the kth station, (S_{i,j,k}) denotes the distance of the ith train traveling from the jth station to the kth …
In recent years, with the rapid development of high-speed railways (HSRs), power interruptions or disturbances in traction power supply systems have become increasingly dangerous.
A sustainable wind barrier energy harvesting system is proposed. • The coaxial counter-rotating mechanism increases power generation. • A wind speed monitoring system based on LabVIEW is utilized for the wind barrier. • …
The HESS mainly reduces the power consumption cost of high-speed railway power supply system by recycling regenerative braking energy and then …
On the other hand, the high-speed electric multiple units (EMUs) have been widely applied in China''s high-speed railway (HSR), which possess the high power factor (PF) and huge traction power. For …
Internationally, high-speed train aerodynamic noise tests are often carried out in German-Dutch wind tunnels (DNW), German Aerospace Center (DLR) and Japan Railway Technical Research Institute (RTRI). Taking RTRI as an example, Yamazaki et al. [15, 16] measured the aerodynamic noise of a 1:7 scaled high-speed train model, and …
Supercapacitors, also known as electrochemical capacitors, are promising energy storage devices for applications where short term (seconds to minutes), high power energy uptake and delivery are required. Supercapacitors …
With the improvement of people''s living standards and the popularity of outdoor activities, outdoor energy storage power supply has become an essential equipment for more and more people. In various outdoor activities such as camping, hiking, cycling, etc., a high-performance outdoor energy storage power supply can fac
Then presents the EETO in HSRs, including three categories: energy-efficient train control, energy-efficient train timetabling, and EETO considering train timetabling and driving strategy. Next, the current research status and progress on three aspects of EETO in HSRs, namely optimization algorithm, constraint condition, and …
up to 15% in high-speed trains. HST regenerative braking - energy recovery 17 %. Energy consumed at idling. standstill in workshop areas, before departure, during station stops. is estimated to 2 ...
The above studies are contributed to improving the safety management level of China''s high-speed railway to a certain extent. In this study, based on a literature review of the safety management and maintenance technology of China''s high-speed railway, domestic and foreign standards are compared. Methods like simulation and …
About this website. What this website is not - a rail carrier; an owner or operator of trains; or a representative of an official website of any railway company. ... High-speed trains can travel at speeds exceeding 300 km/h (186 mph), significantly cutting down travel
The energy efficiency of high-speed train moving between two successive stations is first studied, then we broaden our research vision in space and time until the …
High-speed electrified railways refer to railways configured with the electric traction power supply system which provides the operating ability to high-speed EMUs without onboard power supply. In 1964, the first high-speed electrified railway line in the world—Tokyo-Osaka Shinkansen was completed and opened to traffic.
The recovered energy shows a maximum in correspondence of a 20% braking request; however, this low value of the braking request involves that the braking distance and the braking time (respectively reported in Fig. 22, Fig. 23) are quite high, beyond the acceptable limits usually considered in high-speed applications.
To solve the negative sequence (NS) problem and enhance the regenerative braking energy (RBE) utilisation in an electrified railway, a novel energy storage traction power supply system (ESTPSS) is proposed in this study.
In recent years, with the rapid development of high-speed railways (HSRs), power interruptions or disturbances in traction power supply systems have become increasingly dangerous. However, it is often impossible to detect these faults immediately through single-point monitoring or collecting data after accidents. To coordinate the …
As the world looks to limit greenhouse gas emissions, carbon-free renewable energy sources such as solar and wind will play a growing role on power grids. But such sources cannot generate electricity all the time. According to David L. Trumper, professor of mechanical engineering, a good way to smooth out supply would be using a …
Introducing our 150W outdoor energy storage power supply, a reliable and portable mobile power source for your camping and outdoor adventures! Equipped with high capacity batteries, this power supply unit can keep your devices charged and powered throughout the day. It features multiple output interfaces (including USB1/2/3 ports), as …
Abstract: Traction power supply system (TPSS) sometimes suffers a short interruption, which will lead trains losing power during their operations. In this emergency situation, to …
Braking energy of trains can be recovered in storage systems. • High power lithium batteries and supercapacitors have been considered. • Storage systems can be installed on-board or along the supply network. • A …