Articles tagged with "power-systems"
World's top 10 fastest trains pushing the limits of speed on tracks
The article highlights the world’s top 10 fastest trains as of 2025, emphasizing their groundbreaking speeds and technological innovations that are reshaping rail travel globally. Leading the list is France’s TGV POS/Euroduplex family, which holds the steel-wheel speed record at 575 km/h (357 mph) achieved during a 2007 test and operates efficiently across multiple European countries with advanced power systems. Japan’s JR SCMaglev L0 Series, although not yet in commercial service, promises to become the fastest train upon its 2034 launch, with a commercial speed of 505 km/h (314 mph) and a record crewed speed of 603 km/h (374 mph), drastically cutting travel time between Tokyo and Osaka. China features prominently with several entries: the Shanghai Maglev, the fastest commercial maglev at 460 km/h (286 mph); the CR450 Fuxing prototype targeting a 450 km/h design speed and expected operational debut around 2026-202
energyhigh-speed-trainsmaglev-technologysustainable-transportationpower-systemsrail-innovationsuperconducting-magnetsAI Could Snuff Out Wildfires One Power Line at a Time - CleanTechnica
The article discusses a new project led by the U.S. National Renewable Energy Laboratory (NREL) aimed at preventing wildfires caused by fallen or degraded power lines through the use of artificial intelligence (AI). Each year, a portion of wildfires in the U.S. are triggered by high-impedance (HiZ) faults—small electrical faults where energized conductors contact the ground, producing sparks that can ignite nearby flammable materials. These faults are difficult to detect due to their low energy output. To address this, NREL, funded by the U.S. Army Construction Engineering Research Laboratory, developed machine learning models based on artificial neural networks (ANNs) to identify these faults early and enable utilities to respond quickly, thereby reducing wildfire risks and power outages. NREL partnered with Eaton, a multinational power management company, to simulate various downed conductor scenarios under different environmental conditions, generating extensive datasets. These datasets were integrated into NREL’s PSCAD grid simulation platform to create a large variety of
energyartificial-intelligencemachine-learningpower-systemswildfire-preventionhigh-impedance-faultgrid-resilienceUS certifies Hyundai's breakthrough ship propulsion system
Hyundai has achieved a historic milestone by securing the first-ever New Technology Qualification (NTQ) certificate from the American Bureau of Shipping (ABS) for its advanced electric propulsion system, developed by its affiliates HD Korea Shipbuilding & Offshore Engineering (HD KSOE) and HD Hyundai Heavy Industries (HD HHI). This breakthrough propulsion system, known as the Breakerless-MVDC Power System, utilizes medium-voltage direct current (MVDC) to optimize power distribution, reduce energy loss, and improve ship operational efficiency. The certification validates the system’s technical feasibility and maturity after a rigorous evaluation, marking a significant advancement in marine electrification technology for both commercial and naval vessels. The collaboration between ABS and HD Hyundai underscores a shared commitment to maritime safety and the transition to clean energy, aiming to support the shipping industry’s goal of achieving net zero emissions by 2050. HD KSOE emphasizes that MVDC technology is essential for advancing electrification and automation in large vessels, building on their prior
energymarine-electrificationelectric-propulsionshipbuildingclean-energyzero-carbon-vesselspower-systemsGoogle's geothermal experiments are engineering templates for the energy transition
Google is pioneering the integration of engineered geothermal systems (EGS) into its next-generation data centers to address the growing thermal and power demands driven by AI-scale computing. As AI workloads increase, traditional cooling methods like air cooling are becoming insufficient, especially with emerging high-performance chips such as Nvidia’s GB200, which generate significantly higher thermal loads. Google's approach involves leveraging subsurface heat as a stable, low-carbon energy source that can be engineered for dispatchability and scaled to meet the real-time power and thermal needs of hyperscale compute infrastructure. This initiative aims not only to provide near-constant carbon-free energy (CFE) for Google’s operations but also to serve as a scalable blueprint for the broader energy transition. Google’s geothermal efforts include two major projects: an enhanced geothermal system in Nevada developed with startup Fervo Energy, which employs advanced techniques like horizontal drilling and fiber-optic monitoring; and a corporate geothermal power purchase agreement in Taiwan with Baseload Capital, designed to deliver 10 MW of reliable power
energygeothermal-energyclean-energydata-centerscarbon-free-energypower-systemsthermal-managementChina's new X-shaped rail gun design doubles firepower, improves range
Chinese military researchers have developed a novel "double-decker" X-shaped rail gun design aimed at overcoming the firepower and range limitations of existing rail guns. The design stacks two rail guns vertically within a single barrel, each with its own independent power circuit, allowing them to operate in parallel without magnetic interference. This configuration uses four rails and two U-shaped armatures working together, enabling the weapon to potentially launch a 132-pound (60 kg) projectile at speeds of Mach 7, significantly increasing the shell size and firepower compared to the current Chinese naval rail gun, which fires 33-pound (15 kg) shells. The new design promises a range of approximately 248 miles (400 km), with projectiles reaching targets in about six minutes and impact speeds exceeding Mach 4. However, the technology remains untested in live-fire scenarios, and researchers acknowledge challenges such as the "proximity effect," where interference between nearby electrical currents could affect performance and reliability. The team, led by Associate Professor
energyelectromagnetic-weaponsrail-gun-technologymilitary-technologypower-systemsmaterials-scienceelectromagnetic-accelerationNuclear electric propulsion may reduce transit times to outer planets
energynuclear-propulsiondeep-space-explorationpower-systemsfission-technologyspace-travelreliabilityCơ chế cho nguồn điện sử dụng khí trong nước và LNG nhập khẩu Nghị định 100 2025
energynatural-gaselectricity-generationrenewable-energypower-systemsenergy-policythermal-powerEVNSPC thí điểm giải thể điện lực cấp huyện thành lập đội quản lý điện
energyelectricity-managementrenewable-energypower-systemsenergy-restructuringutility-managementenergy-efficiencyHệ thống điện Tây Ban Nha 1 ngày không dùng nhiên liệu hóa thạch và sự cố mất điện diện rộng Đâu là nguyên nhân
energyrenewable-energypower-systemselectricitySpainenergy-transitionblackout