Articles tagged with Power Systems
A breakthrough in computer-designed thermoelectric generators has achieved more than eight times better efficiency than conventional designs. The innovative approach uses topology optimization to precisely control heat flow and minimize electrical resistance.
Researchers develop new concept to accurately model wind turbine loads, focusing on local gusts' impact on material fatigue. This enhances turbine design and efficiency by reducing uncertainties in load estimations.
Researchers designed a high-efficiency bidirectional wireless power transfer system for multiple electric vehicles, supporting both grid-to-battery and battery-to-grid operations. The system achieved high efficiency under various operating conditions, with demonstrated interoperability between different vehicle-side equipment.
The article reviews bidirectional capacitive power transfer, conversion topologies, resonant networks, and power control strategies. Key findings highlight the need for coordination between power electronics and coupling structures in bidirectional operation.
A novel energy management system (EMS) reduces converter count, battery stress, and hydrogen use in stand-alone hybrid photovoltaic and proton exchange membrane fuel cell microgrids. The EMS maintains DC-link stability while adapting to changing renewable generation and load conditions.
Researchers have discovered that lithium dendrites in batteries are unexpectedly strong and brittle, causing short circuits and safety risks. The findings suggest that future battery design must change to improve safety and reliability of high-energy storage systems.
A study by researchers from the University of Michigan and international institutions recommends prioritizing grid upgrades targeting long-term demand expectations to minimize total costs. By upgrading the grid first, utilities can create a more efficient infrastructure that leverages Vehicle-to-Grid (V2G) chargers more effectively.
Qing-Chang Zhong, Illinois Tech engineering professor, recognized for inventing synchronized-and-democratized (SYNDEM) architecture and pioneering virtual synchronous machines (VSM). His work reshapes how future power systems are conceived and operated to meet the demands of a rapidly evolving energy landscape.
A new study published in PLOS Medicine found that power outages in the US are associated with increased emergency hospital visits for older adults, particularly for cardiovascular and respiratory diseases. The study estimated that 4,246 additional hospitalizations occurred in 2018 among adults over 65 due to power outages.
Researchers at Nagoya University present six advances in gallium oxide thin-film growth, including a world-first result growing the material on low-cost silicon substrates. The new High-Density Oxygen Radical Source doubles atomic oxygen density, promoting chemical reaction and film growth.
The partnership aims to demonstrate advanced microgrid capabilities with dynamic boundaries and networked microgrids, enhancing reliability for utility customers. EPB will add 58 megawatt hours of energy storage in five microgrids, providing backup power to over a thousand residential customers and community resources.
Fang Peng has made significant contributions to Z-source and modular multi-level converters for distribution and transmission networks. These technologies improve safety, flexibility, and performance in diverse energy sources. Peng's work aims to create resilient systems that can handle faults and prevent devastating wildfires.
The institute will focus on technologies required to operate next-generation AI supercomputer systems reliably while accelerating scientific breakthroughs. It aims to drive innovation in making AI data centers more efficient, reliable, secure, and integrated with the nation's energy system.
The ACET-Estonia project partners to co-design and deliver applied clean energy research, fostering innovative solutions for Estonian island communities. Canadian expertise supports international partners in addressing similar energy challenges.
A new hybrid anode technology has been developed that delivers higher energy storage while reducing thermal runaway and explosion risks. The 'magneto-conversion' strategy applies an external magnetic field to ferromagnetic manganese ferrite conversion-type anodes, promoting uniform lithium ion transport and preventing dendrite formation.
A study by MIT researchers examines two policy approaches to expanding the US electricity grid: one focusing on regions with more renewable energy sources and another creating more interconnections across the country. The study found that a geographically unbalanced grid buildout would be less expensive, while reducing carbon emissions...
A new virtual battery model and charger sharing concept improve local energy markets for efficient distribution network operation. This approach enhances grid stability, reduces investment costs, and supports the shift away from fossil fuels.
Researchers propose technology using multimodal information from LiDAR, GPS, IMU, and thermal camera to reconstruct transmission line geometric profile and estimate sag. The approach can predict how the shape of the TL would change under extreme thermal conditions.
The FAU College of Engineering and Computer Science has established the 'Ubicquia Innovation Center for Intelligent Infrastructure' to develop transformative technologies. The center will empower students and faculty to create AI-First solutions for a smarter, more connected world.
Researchers are exploring how honey bees' coordination and communication can inform the design of more resilient electric grids. By mimicking the way bees share resources, they aim to create a virtual peer-to-peer network that can withstand disruptions and improve energy delivery.
A new study finds that an AI-powered lifestyle intervention is noninferior to human coaching in achieving a composite outcome in adults with prediabetes and overweight or obesity. The AI-led Diabetes Prevention Program was noninferior to the human-led program in terms of weight reduction, physical activity, and HbA1c levels.
A new analysis from the University of Michigan predicts that hurricane-induced power outages will increase along the Atlantic coast, particularly in northern Florida and southern Atlantic states. The study finds that Hispanic, non-white, low-income, and elderly populations will be disproportionately affected by these outages.
A new AI-based method optimizes the operation of solar power generation and battery storage systems, reducing imbalance penalties by approximately 47% compared to conventional control methods. The method maintains stable profits throughout the four seasons and can handle real-world uncertainties such as sudden weather changes and compl...
Researchers analyzed power outage data and weather records to identify planning vulnerabilities and criticality as drivers of prolonged local outages. Targeted interventions, such as isolating critical nodes and improving operational flexibility, can reduce customer outages by up to 49.5%.
Researchers developed a technique to monitor corrosion and cracking in nuclear reactors using real-time 3D imaging. By directly imaging material failure processes, scientists can design safer reactors that deliver higher performance.
A new machine learning-based design method has been proposed to achieve stable and efficient wireless power transfer. The approach uses real-world circuit modeling and numerical simulations to optimize system performance, demonstrating significant improvements in output voltage stability and power-delivery efficiency.
Researchers at SwRI create a custom test rig to study how blending hydrogen into liquid natural gas affects storage tank temperatures and steel material integrity. The goal is to determine if tanks can endure lower temperatures without compromising safety.
Researchers at WVU have designed a fuel cell that can switch between storing and generating electricity, making it suitable for balancing an overwhelmed US electrical grid. The new design, called conformally coated scaffold, stays stable even at high temperatures and humidity levels.
A new study by NERC finds that long-term funding has driven the UK's offshore wind industry, providing 17% of total UK electricity and supporting 32,000 jobs. The investment is expected to grow to 100,000 by 2030.
The University of Ottawa's SUNLAB has developed a simulation model for multi-junction photonic power converters, which enable the conversion of laser light into electrical power with higher efficiencies and voltages. This technology could lead to more reliable telecommunication networks, reduce costs by enhancing systems performance, a...
Researchers developed models to quantify the risk of catastrophic blackouts during hurricanes and forecast climate impacts on energy systems. Their work aims to inform grid upgrades and navigate clean energy targets while maintaining reliability.
Researchers from Southwest Research Institute (SwRI) have set a new temperature record for testing materials in high-pressure environments. The team successfully achieved unprecedented conditions of 1,150 degrees Celsius at 300 bar using a modified autoclave setup.
The University of Vaasa's FlexiPower project aims to develop and commercialize a 'Building as a Battery' (BaaB) solution that enables dynamic response of building heating and cooling systems to power grid needs. This innovation offers cost-effective and scalable solutions for balancing the power grid.
Researchers at Incheon National University have pioneered a novel resonant tuning rectifier (RTR) for parallel compensated receivers in wireless power transfer. The RTR enhances efficiency via dynamic frequency adaptation, reducing circuit impedance and minimizing interference with other devices.
Professor Fang Peng has been elected to the National Academy of Engineering for his contributions to high-powered electronic technologies. He joins a distinguished group of Pitt faculty members who have made significant impacts in their fields.
Emrullah Aydin's work in modeling and simulation supported ORNL's record-setting wireless power transfer of 270-kilowatts to a light-duty passenger vehicle. He joined ORNL in 2022 as a postdoctoral researcher and became a staff member in 2023.
Researchers are developing new ways to harvest and adapt energy from everyday home activities, such as turning a doorknob or opening a fridge door. This technology aims to create smart interfaces that can power appliances and assist people with disabilities, increasing energy efficiency and accessibility.
A new method for efficiently utilizing energy users' flexibility in distribution and transmission networks has been introduced. Consumers can provide flexibility services, benefiting both the system operators and themselves financially. The dissertation highlights the need for improvements and investments to deploy these methods globally.
The University of Pittsburgh's Swanson School of Engineering is leading a $3.3 million project to optimize HVDC converter design for increased power density and decreased cost. The project aims to help affordably integrate more renewable energy generation onto the grid via HVDC lines.
A recent study by Norwegian University of Science and Technology found that nuclear energy can lead to a more affordable energy system overall. It can reduce the need for costly power grid expansions and energy storage, while lowering environmental impacts and air pollution.
Research shows that power systems with higher weather-dependent renewable energy sources (WD-RESs) tend to have reduced blackout intensities in the US. High WD-RES penetration does not worsen the weather vulnerability of power systems, even during extreme weather events.
The University of Tennessee and Lockheed Martin have expanded their master research agreement to address national security challenges. The partnership will support advanced technologies such as hypersonics, materials, and energy systems, while also providing experiential learning opportunities for students.
A team of scientists has developed a novel method to explain the behavior of water-responsive materials, which can change shape in response to humidity fluctuations. This breakthrough could advance efforts toward clean energy production, robotics, and bioelectronics.
A new method for generating dynamic security region boundaries has been developed using space division and Wasserstein generative adversarial network with gradient penalty. This method significantly improves the efficiency and accuracy of transient stability analysis in power systems with high wind power penetration.
University of Texas at Dallas researchers develop AI model that can automatically reroute electricity in milliseconds to prevent power outages. The system uses machine learning to map complex relationships between entities in a power distribution network, enabling faster response times than human-controlled processes.
Research suggests that large-language models could play a role in managing the energy grid, particularly in emergency response, crew assignments, and wildfire preparedness. However, significant challenges remain, including data availability, safety guardrails, and reliability, which must be addressed to ensure safe deployment.
A new Bayesian inference framework reduces data size by over 80% while achieving accurate modeling and control of optical power evolution. The approach enables simultaneous exploitation and exploration of a data space to identify suitable candidates for autonomous driving optical networks.
The new circuit design uses resonant tank circuits to store energy during switching periods, reducing losses and increasing efficiency. It also employs a planar transformer for compactness and good thermal performance. The prototype achieved an unprecedented 91.3% energy efficiency and reduced electromagnetic noise.
Researchers have developed a solid electrolyte that allows for efficient hydride ion conduction at room temperature, enabling the creation of safer, more efficient hydrogen-based batteries and fuel cells. This breakthrough provides material design guidelines for the development of next-generation energy storage solutions.
A $161 million grant from the DOD will support research into tunable thermal conductivity and latent heat storage effects in materials. The new equipment enables analysis across a wide temperature range and various pressures and humidity levels, paving the way for adaptive materials with dynamically tunable phase change properties.
A Binghamton University professor leads a research team to explore the stability of power grids with inverter-based resources, which have changed the grid's dynamics. The goal is to characterize the stability region without numerical simulation.
Researchers will incorporate advanced semiconductor technologies and AI into a millimeter-wave radio system to increase bandwidth while reducing energy consumption. The project aims to save tens to hundreds of terawatt-hours of energy per year, contributing to climate change mitigation.
Researchers at Tokyo University of Science developed nanostructured hard carbon electrodes using inorganic zinc-based compounds, which deliver unprecedented performance and significantly increase the capacity of sodium- and potassium-ion batteries. The new electrodes improve energy density by 1.6 times compared to existing technologies.
A team led by Lehigh University's Yahong Rosa Zheng is developing an Autonomous Observatory Node that can collect and transmit data from underwater sensors wirelessly, without the need for expensive subsea cables. The prototype aims to operate at depths of up to 1000 meters, enabling researchers to study extreme environments and detect...
Researchers at UBC Okanagan have developed a gaming strategy to strengthen vital infrastructure against malevolent attacks, aiming to ensure safety, health, and lives during emergencies. By identifying critical roads and intersections, they can reinforce them to minimize disruption.
Scientists analyzed European power blackouts and found that recovering within 13 hours can reduce up to 52% of power loss from cascading events. The study identifies early warning signs and operational training as key to building resiliency in the system.
The IISc team developed a fully indigenous GaN power switch, comparable to state-of-the-art switches, with a switching time of about 50 nanoseconds. The device's performance is suitable for applications such as power converters for electric vehicles and laptops, as well as wireless communications.
This study uses magnetic sensors to detect and control fuel cell malfunctions. By visualizing the current distribution in real-time, the system can stabilize voltage while controlling bias, enabling stable fuel cell operation. The team aims to develop a comprehensive diagnostic and control system for real-world applications.
The researcher will develop an integrated framework to estimate degradation at the component level, enhance health prediction techniques, and design coordinated circuits with embedded systems. His work aims to inspire and educate the next generation of innovators in power electronics.
A team of researchers from China and the UK has developed new ways to optimise the production of solar fuels by creating novel photocatalysts. These photocatalysts, such as titanium dioxide with boron nitride, can absorb more wavelengths of light and produce more hydrogen compared to traditional methods.