Articles tagged with Electric Vehicles
A team of researchers designed a custom approach sound library for electric vehicles using low-frequency noise, which was found to be more effective at alerting pedestrians. The sounds were tested with volunteers and ranked highly on criteria such as urgency and noticeability.
Researchers at SwRI discovered a security vulnerability in the Signal Level Attenuation Characterization (SLAC) protocol used in electric vehicle-to-grid communications. The team successfully modeled and replicated a machine-in-the-middle attack that could manipulate or halt EV charging processes.
This research uses D-STATCOM to dynamically balance loads and supply reactive power at charging stations, improving power quality and reducing energy waste. The study showcases superior reactive power management, stabilizing the low-voltage distribution network and enabling more reliable EV infrastructure.
The team successfully tested a hybrid Cessna 337 plane with a smaller, more efficient silicon carbide-based motor drive system. The technology reduces the overall size and weight of the plane, making it ideal for small aircraft where space is limited.
Researchers at Yonsei University have developed a groundbreaking fluoride-based solid electrolyte that enables all-solid-state batteries to operate beyond 5 volts safely. The innovation allows spinel cathodes to operate efficiently and retain over 75% capacity after 500 cycles.
A new study finds that electric vehicles outperform gasoline cars in lifetime environmental impact, with a reduction in cumulative CO2 emissions after two years of use. The transportation sector accounts for 28% of US greenhouse gas emissions and adopting electric vehicles can improve climate and air quality.
A new study published in Nature Nanotechnology reveals a double-layer electrode design that improves the cyclic stability and fast-charging performance of automotive batteries. The breakthrough could reduce costs by 20-30% and pave the way for next-generation high-performance batteries.
Researchers at NIT Puducherry unveiled an energy-efficient model predictive current control (MPCC) method that enhances induction motor drive performance in electric vehicles. The CSVVV-based MPCC introduces a novel way to synthesize voltage vectors, reducing switching losses and current ripple.
A new study suggests that electric vehicles can help mitigate climate change and public health issues by strategically charging and discharging from the grid. By doing so, EVs can sell stored energy back to the grid, reducing emissions and helping to build more renewable energy generators.
Researchers developed a new diagnostic metric called State of Mission (SOM) to predict EV battery performance based on both battery data and environmental factors. SOM significantly reduced prediction errors compared to traditional methods.
A survey by University of Washington researchers found that participants with a negative view of public charging were less likely to choose an electric vehicle than those with a moderate view. Participants demanded strikingly large concessions, such as a 30% discount or 366 extra miles of range, before choosing an EV.
Researchers at IISc have developed a novel cascaded H-bridge-based multiport DC converter to directly connect to the medium-voltage AC grid, eliminating the need for large and expensive LFTs. This technology offers a 3-5% improvement in energy efficiency and reduces costs, making electric vehicle charging stations environmentally frien...
A team at the University of Kansas will develop intelligent spectrum management frameworks to enable reliable communication for drones. They aim to study how to use a proposed 5030-5091 MHz frequency band efficiently, with potential benefits including quicker deliveries and improved emergency response.
Researchers predict EU will need to meet 250 TWh annually for local battery cell production by 2050, offsetting 90 TWh of upstream fossil fuel energy. Maximizing recycling rates could reduce import dependency and future energy demand.
A new study by Purdue University engineers warns that a nationwide switch to electric homes and vehicles could overwhelm the power supply, leading to increased risk of outages. However, key measures such as home insulation, equipment efficiency, and coordinated device operation can reduce costs by up to 40%.
A recent study published in the Journal of Safety Research found that rented e-bikes have an eight times higher crash risk than rented e-scooters, calculated based on trip distance. The researchers used GPS data to compare micromobility in seven European cities and found a surprising result.
University of Oklahoma mechanical engineering professor Dong Zhang is leading efforts to advance EV battery technologies, exploring advances in battery mechanisms and chemistries. His NSF-funded work aims to develop physics-based models to predict the performance of battery cells with silicon-graphite composite material.
A new study by the University of Otago warns that electric vehicles will lead to increased winter electricity peaks in Aotearoa. The research shows that charging EVs in winter requires more energy, potentially increasing monthly consumption by up to 30% by 2050.
MIT researchers developed a sustainable electrolyte that quickly breaks down when submerged in organic solvents, allowing for easy recycling of components. The new material could revolutionize the battery industry by simplifying the recycling process and reducing electronic waste.
The University of Michigan has expanded its open-access Battery Lab with a new facility, increasing capacity for lithium-ion battery production and prototyping. The lab now offers advanced equipment, including an automated laser welder and three-megawatt-hour battery production line.
Researchers developed a groundbreaking solution to tackle both energy efficiency and ride comfort challenges in electric vehicles. The innovative Teamwork Optimization Algorithm (TOA) dynamically adjusts the motor's magnetic flux for optimal performance, resulting in reduced energy consumption by up to 15%, smoother acceleration with 4...
Researchers at Uppsala University developed an AI model that can accurately predict battery ageing, leading to longer life and enhanced safety for electric vehicle batteries. The model reduces the need for sensitive vehicle data and provides a detailed picture of chemical processes inside batteries.
The Illinois Tech EV Readiness Community Awards celebrate local governments leading the transition to electric vehicles, with a focus on energy innovation and sustainability. The university's campus-wide transformation showcases its resilience and sustainability as a model for urban energy systems of the future.
A new Northwestern University study finds that even with renewable energy availability, switching to electric vehicles won't fight climate change without upgraded transmission grids. Targeted upgrades could alleviate congestion and unlock full emissions-reduction potential of EV adoption.
A study by researchers at the University of Münster found that deploying end-of-life EV batteries as stationary energy storage devices can significantly reduce greenhouse gas emissions. By prioritizing reuse, countries with high renewable energies can save up to 56 million tons of carbon dioxide emissions.
A novel mathematical framework enables precise control over multiple descriptors in high-nickel cathodes, improving mechanical and structural stability. The approach yields significantly improved electrochemical performance and minimal particle cracking, leading to safer consumer electronics and more reliable electric vehicles.
Researchers have developed solid-state batteries that can charge in a fraction of the time and pack more energy into less space than traditional lithium-ion versions. These batteries use stable solid materials instead of liquid electrolytes, enabling faster charging, reduced safety risks, and improved efficiency.
A new study by Carnegie Mellon University researchers suggests that investing in EV charging infrastructure is more effective than offering consumer tax credits to boost adoption. The study found that increasing EV adoption could reduce emissions by 51% and increase sales by 26% by building Level 3 fast-charging stations.
A new coating method uses liquid-based chemical conversion coating with cavitation bubbles to improve corrosion resistance and mechanical properties of magnesium alloys. The team's technology aims to reinforce lightweight materials in electric cars, addressing the need for more durable materials.
A new process using seawater and recycled soda cans can produce green hydrogen with a low carbon footprint comparable to other green hydrogen technologies. Researchers found that the overall emissions of this method are on par with those of fossil-fuel-based processes, making it a scalable and sustainable option for energy production.
A new analysis from UC Davis suggests that lithium-ion battery recycling could play a big role in meeting growing global demand for lithium, potentially reducing the need for new mines. Recycling could mitigate supply constraints and reduce carbon emissions associated with combustion engine vehicles.
Researchers analyzed two years of data on electric buses in Ithaca, finding batteries consume 48% more energy in cold temperatures. Short-term strategies include storing buses indoors and limiting door opening time to improve performance.
A study reveals an increasing polarisation between Asia and Western nations in future battery technologies, with Europe and the US focusing on improving existing lithium-ion batteries. Meanwhile, countries like China, Japan, and South Korea are investing in high-energy batteries and low-cost alternatives.
Researchers at MIT have developed a new fuel cell that can carry three times as much energy per pound as current EV batteries, offering a lightweight option for electrifying transportation systems. The technology has the potential to enable electric aviation and other sectors like marine and rail transportation.
A study by Tohoku University found that combining rooftop solar panels with electric vehicles as batteries can supply 85% of Japan's electricity demand and reduce carbon dioxide emissions by 87%. The 'PV + EV' system could lower energy costs by 33% by 2030, providing a promising pathway for Japan to achieve carbon neutrality.
A new two-layer active balancing strategy improves energy transfer efficiency and speed by redistributing energy among cells. The layered structure integrates inductor and transformer circuits to balance both within and between battery cell groups, achieving faster equalization and increased energy efficiency.
A recent study shows that electric vehicle manufacturers can reduce their material demands by nearly 15% by adopting a circular manufacturing system decision-making model. This approach enables product design that facilitates eventual remanufacture and reuse, or recycling, resulting in production cost savings of 18.6% and overall carbo...
Researchers developed circular coils with ferrite boxes to enhance wireless power transfer efficiency for electric vehicles. The design achieved a 50% increase in coupling efficiency and a 300% boost in EMF strength.
Researchers present an intelligent solution to manage complex energy systems, improving frequency stability and reducing settling time by up to 283% compared to traditional controllers. The innovative FO-Fuzzy PSS controller incorporates a specialized washout filter, ensuring smooth operation even during turbulent conditions.
Recent advancements in compensation circuits have achieved impressive results in addressing key inefficiencies in wireless EV charging. Researchers refined converter topologies to deliver high-power, high-efficiency charging without physical connectors, demonstrating improved power transfer.
A new study explores the future of EV ultrafast charging stations in China, finding that increased power capacity does not necessarily double station loads. The researchers propose two generalized solutions: energy storage and dynamic waiting strategies, which can effectively decrease peak loads and satisfy surging demands.
Fraunhofer IAF presents a bidirectional 1200 V GaN switch with integrated free-wheeling diodes, enabling more efficient power electronics for energy generation and mobility. The switch can be used in grid-connected power converters and electric drive systems.
Researchers developed a novel anode material combining hard carbon with tin, enhancing energy storage and stability. The composite structure shows excellent performance in lithium-ion and sodium-ion batteries, promising applications in electric vehicles and grid-scale energy storage.
A study by University of Auckland researchers found that electric vehicle (EV) adoption is linked to increased carbon dioxide emissions unless countries clean up their electricity grids. Only when renewable energy sources account for approximately 48% of global electricity generation will EVs contribute to reducing CO₂ emissions.
Researchers at University of Sheffield find socioeconomic inequalities persist in low-carbon technology adoption, particularly among disadvantaged groups. The report advocates for targeted interventions and community-level support to level the playing field.
Researchers analyzed driving behavior data from Chinese electric vehicle drivers and found that rapid acceleration significantly impacts energy efficiency. The study provides actionable guidance for EV owners to improve their eco-driving behaviors and offers insights into developing personalized feedback systems.
Researchers developed a novel approach to visualize and analyze driving behaviors in electric vehicles, revealing the impact of driving patterns on energy consumption. Key findings show that rapid acceleration is a primary cause of excessive energy consumption, which can be mitigated by adopting eco-driving behaviors.
A comprehensive study examined vehicle-mounted wireless power transfer systems to ensure user safety during electric vehicle charging. The research revealed key considerations for designers: optimizing field distribution patterns, mitigating misalignment effects, and shielding high-frequency cables.
The US power system lacks capacity to handle rising demand, meeting participants agreed. Six big ideas for federal and state energy policymakers consider expanding the grid, optimizing current capabilities, and controlling costs and system reliability.
Researchers at the University of Michigan have developed a modified manufacturing process that enables high ranges and fast charging in cold weather. A stabilizing coating on an electrode, combined with microscale channels, solves the trade-off between range and charging speed, even in subfreezing temperatures.
A recent study identified a quasi-conversion reaction on the cathode surface during discharging, leading to accelerated battery degradation. High nickel content exacerbates this effect.
The study combines LoRa with distributed machine learning to optimize network connectivity for efficient transportation systems. It improves network efficiency and reliability by employing innovative spreading factor models and K-means algorithms.
The study reveals that riders who deliberately crash or cause dangerous situations when riding are a significant concern. The researchers also found that one-handed steering and group riding increase the risk of crashing by six times and almost triples it respectively.
Researchers have developed a new sensor to detect hazardous gas leaks in lithium-ion batteries, which could prevent catastrophic failures and enhance the reliability of battery-powered technologies. The sensor detects trace amounts of ethylene carbonate vapour, targeting potential battery failures before they escalate into disasters.
Researchers developed a novel approach to address thermal challenges in electric vehicle charging using a gallium-based liquid metal flexible charging connector. The LMFCC demonstrated excellent flexibility, high transmission stability, and efficient heat dissipation.
Researchers developed a 'nano-spring coating' technology to increase the lifespan and energy density of EV batteries. The technology, featuring multi-walled carbon nanotubes, absorbs strain energy generated from charging and discharging, preventing cracks and improving stability.
Researchers at the University of Texas at Austin and Argonne National Laboratory have developed a comprehensive analysis of thermal stability in high-nickel cathode materials. The team discovered that each material has a critical state of charge defining its safe operating limit, which influences metal-oxygen bonds and surface reactivity.
Interest in second-hand electric vehicles (EVs) has doubled from 3.5% to 7% of advert views between 2022 and 2023, indicating a potential tipping point in the UK used car market. This growth is driven by 'sticky' interest that lasts longer, suggesting drivers are becoming more receptive to EVs.
Researchers have developed novel membranes that can pull lithium directly out of salt-lake brines using electricity, leaving other metal ions behind. The process could reduce the environmental impact of lithium mining and contribute to more efficient energy storage systems for renewable energy sources.
LearningEMS provides a unified platform for various EV configurations, supporting detailed comparisons of multiple algorithms and benchmarks. The study highlights the strengths and weaknesses of different approaches, emphasizing the importance of state, reward, and action settings in RL-based EMS optimization.