Blockchain Press Releases
IDTechEx Discusses 4 Ways to Eliminate Rare Earths in EV Motors and One You Haven’t Heard
BOSTON, Aug. 14, 2023 /PRNewswire/ — The use of rare earths in various modern technology has drawn attention over the years. But with the rising demand for electric vehicles (EVs), the issue has been brought to the fore. 82% of the electric car market in 2022 was using electric motors based on rare earth permanent magnets. China largely controls the supply of rare earths, and this has led to significant price volatility in previous years, with a large spike in 2011/2012 and a big rise between 2021-2022. Crucially, in comparison to some other technologies, several methods can be used to eliminate the use of rare earths in electric motors, which will be outlined in this article along with the pros, cons, and adoption.
This article is based on IDTechEx’s latest “Electric Motors for Electric Vehicles 2024-2034” report that analyses different motor technologies for performance, materials, market adoption, and future potential.
To briefly describe the construction of an electric motor, a stationary part (stator) has coils of metal (typically copper) fed by an electric current to generate a magnetic field. This field will then turn the rotating part of the motor (rotor). In a rare earth permanent magnet (PM) motor, the magnets are located on the rotor.
1. The Induction Motor
In an induction motor (or asynchronous motor), the rotating magnet field produced by the stator induces currents on the rotor, which in turn produces a magnetic field that is attracted/repelled from the radial field of the stator windings. The induction motor uses copper or aluminum bars or windings on the rotor. These motors typically present good peak power and torque density over short periods but can prove challenging to thermally manage and typically have lower efficiency than PM options.
Induction motors have been common in the EV market, being the primary choice of Tesla until the release of the Model 3 (which adopted a PM design). In the car market, some proponents remain, such as Audi and Mercedes, but induction motors are now largely used as a secondary motor, used for acceleration boosts as they do not create drag when not in use, eliminating the need for a decoupler.
2. The Wound Rotor Motor
Also known as an externally excited synchronous motor (EESM), the wound rotor synchronous motor (WRSM) replaces the magnets on the rotor with coil windings that can be fed with a DC current to generate a magnetic field. This has the advantage of being able to control both the stator and rotor field. The downsides are the additional manufacturing steps required to add windings to the rotor and brushes are needed to transmit power to the rotor. These motors have historically also had poorer power and torque density, but modern versions are comparable with PM motors.
Renault was an early proponent of this technology in the Zoe, but now BMW and Nissan have adopted this design, and tier 1 MAHLE has presented a version with wireless power transfer to the rotor, eliminating the brushes.
3. The Switched Reluctance Motor
Switched reluctance motors (SRMs) are potentially the most simple to construct, with the rotor largely being constructed of steel. The steel of the rotor has low reluctance compared to the air around it, so magnetic flux preferentially travels through the steel while attempting to shorten its flux path, rotating the rotor. Despite their simplicity and reliability, SRMs have typically been plagued with poorer power and torque density with other issues, including torque ripple and acoustic noise.
While SRMs have largely been confined to more industrial or heavy-duty applications, significant efforts are going into their development for EVs. Companies like Turntide Technologies have added more rotor and stator poles and come up with more sophisticated control systems to overcome traditional issues. UK-based Advanced Electric Machines have developed a new type of motor with a segmented rotor that remains simple in construction but is said to eliminate the acoustic noise and torque ripple while improving power and torque density; this design is the center of a project alongside Bentley.
4. Alternative Magnetic Materials
While many OEMs have steadily reduced the rare earth content of their motors, Tesla gained much interest by saying that its next-generation drive system will be a PM motor without rare earths. There are several ongoing projects to develop rare earth free magnets that can compete on magnetic performance; these are at varying levels of commercialization.
The problem with alternative magnetic materials is that their magnetic performance is generally much worse. For example, some manufacturers that make rare earth and ferrite magnet motors show a reduction in power by 50-70% for ferrite version of the same size motor, meaning that to match performance, much more magnetic material and/or a much larger motor is required.
Proterial has developed magnets with magnetic properties that it states “deliver the world’s highest levels among ferrite magnets”. The motor design only requires 20% more magnetic material to keep the motor power density the same. Niron Magnetics are developing iron nitride magnets, and its next-generation versions are planned to compete with neodymium performance. PASSENGER is a European project developing strontium ferrite and manganese aluminum carbon alloys. While efforts are underway, materials with a truly comparable performance are still some ways into the future; however, with other changes to the motor design, they might not need to.
5. A High Speed Ferrite Motor with Further Optimizations
While the adoption of ferrite magnets would significantly reduce motor performance, optimizing many other motor features could minimize this impact. Australian technology company Ultimate Transmissions has submitted a patent for a ferrite motor design that it believes could be one route Tesla could take to eliminate rare earths in a PM motor.
The design uses much larger ferrite magnets and higher speeds (20,000rpm) to achieve comparable power to a similarly sized rare earth PM motor. One challenge comes from containing the magnets effectively in the rotor; a potential solution would be using a carbon fiber wrap on the rotor (a technology Tesla has already demonstrated in its Plaid vehicles). Another challenge is that the ferrite magnets would need to be heated for optimal operation, the opposite issue faced by neodymium magnets, but not unachievable.
It should be noted that this design is still in the simulation phase, and Tesla could well be taking a different approach, such as its own alternative magnetic materials. But in simulations, this approach has shown similar power, reduced costs, and reduced weight at the expense of slightly reduced torque and a longer stack.
IDTechEx predicts a significant rise in rare earth free motor technologies. Source: IDTechEx
Conclusions for the Future
There is an increasing focus, especially outside of China, on reducing the rare earth content of electric motors. There are several strategies, each with its own trade-offs and opportunities for motor manufacturers and material suppliers. IDTechEx is predicting that rare earth PM motors will remain the dominant technology, largely thanks to China’s dominance in the EV market and other mines starting to come online worldwide. However, it anticipates that rare earth free options, including those mentioned above, will account for nearly 30% of the market in 2034.
IDTechEx’s latest iteration of “Electric Motors for Electric Vehicles 2024-2034” takes a deep dive into motor technology, market adoption, material utilization, and market forecasts. It draws from a large database of vehicles and motors across vehicle segments, including cars, buses, trucks, vans, 2-wheelers, 3-wheeler, microcars, and aircraft.
To find out more about this report, including downloadable sample pages, please visit www.IDTechEx.com/motors.
About IDTechEx
IDTechEx guides your strategic business decisions through its Research, Subscription and Consultancy products, helping you profit from emerging technologies. For more information, contact [email protected] or visit www.IDTechEx.com.
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Blockchain Press Releases
Grexie Signchain Launches on November 1st, 2024: Enabling Smart Contract Developers to Bring Off-Chain Data On-Chain with Seamless Gas-Paid Signing
Grexie Signchain enables developers to sign off-chain data into smart contracts, with self-hosted or secure vault signer wallet management.
MANCHESTER, England, Oct. 17, 2024 /PRNewswire/ — Grexie Limited proudly announces the launch of its innovative smart contract solution, Signchain, on November 1st, 2024. Designed specifically for developers, Signchain introduces a powerful way to bring off-chain data on-chain through user-paid gas fees and secure signing of data into smart contract methods using its extendable smart contract, Signable.
In the growing landscape of blockchain technology, securely managing off-chain data and integrating it into on-chain smart contracts has posed significant challenges for developers. Signchain eliminates these hurdles by offering a robust, gas-efficient system for signing and authenticating data in real-time.
Key Features of Signchain:
1. Seamless Off-Chain to On-Chain Data Integration
Signchain enables developers to securely bring off-chain data on-chain by signing it directly into smart contract methods through user-paid gas fees. This integration ensures that data authenticity is preserved, and its entry into the blockchain remains tamper-proof, streamlining processes for industries relying on real-world data verification. Signchain also supports integration with Google Sheets, AWS, and Firebase, making it easy to pull data from popular off-chain data sources.
2. Extendable Smart Contract – Signable
The core of Signchain’s technology is its extendable smart contract, Signable, which allows developers to customize and build upon existing smart contracts. With Signable, developers can easily implement contract signatures for any data type, offering flexibility across industries from finance to logistics and beyond.
3. Signer Wallet Management
Signchain offers comprehensive signer wallet management as part of its service, empowering developers to manage and authenticate signers effectively. Wallets can either be self-hosted using Signchain’s Docker container for those who prefer their own infrastructure, or they can leverage Signchain’s network of secure vaults for maximum security.
4. Self-Hosted or Managed Service
For developers who want full control of their infrastructure, Signchain provides a self-hosted option via Docker containers, allowing them to deploy the platform on their own servers. Alternatively, developers can opt to use Signchain’s secure vault network, offering a hassle-free solution with enterprise-grade security and wallet management.
5. User-Paid Gas Fees
By integrating a user-paid gas fee model, Signchain allows users to cover the costs of signing and authenticating their data, ensuring the signing process is efficient and doesn’t overburden developers with additional expenses. This makes Signchain an ideal solution for dApps and platforms handling high transaction volumes.
6. Google Sheets, AWS, Firebase Integration with Serverless Model
Signchain supports integration with Google Sheets, AWS, and Firebase in a serverless model, powered by a hosted Sign In With Ethereum (SIWE) implementation provided by Signchain’s API. Developers can simply connect their Google Sheets and configure the contract parameters associated with each column. Signchain will automatically look up the user’s wallet address in the spreadsheet, sign the transaction data, and execute it in the blockchain along with any user-supplied parameters. This creates an easy, efficient way to manage data inputs from off-chain sources without heavy infrastructure setup.
Revolutionizing Smart Contract Workflows
With Signchain, developers now have the tools to handle the complexities of integrating off-chain data into smart contracts. The extendable nature of Signable offers flexibility, allowing developers to cater to various use cases, whether it’s automating financial transactions, supply chain data, or verifying legal agreements.
Tim Behrsin, CEO of Grexie Limited, said, “Signchain is more than just a signing solution—it’s a platform that empowers developers to securely integrate off-chain data into their smart contracts with minimal effort. The flexibility of Signable and our focus on signer wallet management offers developers control and security at every stage of the process.”
Why Signchain Matters
Signchain addresses critical challenges faced by developers, particularly those dealing with off-chain data. By signing data into smart contracts and enabling user-paid gas fees, the platform significantly reduces friction in managing secure, scalable smart contracts. Whether developers need to manage high volumes of data transactions or create bespoke smart contracts, Signchain offers a scalable and secure solution.
In industries like DeFi, real estate, and supply chain management, data integrity and security are paramount. Signchain’s secure vault network and customizable signing workflows allow businesses to handle sensitive information with confidence.
Launch Event and Future Developments
The official launch of Signchain will take place on November 1st, 2024, alongside a virtual event. The event will showcase live demonstrations of Signable, with detailed walkthroughs of the Docker-based self-hosted solution and signer wallet management features. Attendees will also get an exclusive preview of future enhancements, including multi-signature workflows and advanced blockchain network integrations.
About Signchain
Signchain is a cutting-edge platform developed by Grexie Limited, based in Manchester, Cheshire, United Kingdom. Signchain simplifies smart contract development by offering a secure, scalable, and customizable solution for signing and authenticating off-chain data on-chain. Developers can either self-host the solution using Signchain’s Docker container or rely on the network’s secure vault infrastructure. With an emphasis on security, flexibility, and developer experience, Signchain is set to transform how smart contracts handle off-chain data.
For more information, visit signchain.net.
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SOURCE Grexie Limited
Blockchain Press Releases
Bybit Named ‘Best Blockchain Company of the Year’ at Future Enterprise Awards 2024
DUBAI, UAE, Oct. 17, 2024 /PRNewswire/ — Bybit, the world’s second-largest cryptocurrency exchange by trading volume, proudly announces its recognition as the “Best Blockchain Company of the Year” at the Future Enterprise Awards 2024, organized by Tahawul Tech. This prestigious accolade affirms Bybit’s continued leadership in blockchain innovation, technological excellence, and user-centric services within the cryptocurrency sector.
Hosted by CPI Media Group, the Future Enterprise Awards honor visionaries across industries shaping the future through transformative technologies. Bybit’s recognition reflects its pivotal role in redefining the digital finance landscape, catering to the needs of both retail and institutional investors with robust solutions and a trusted crypto trading ecosystem.
Recognized for its state-of-the-art infrastructure and unwavering commitment to innovative products, Bybit has positioned itself as a trailblazer in advancing blockchain technology and the digital asset economy. This award highlights the exchange’s ongoing efforts to deliver top-tier security, liquidity, and innovative tools that empower users and institutions alike.
“This award is a testament to our team’s relentless drive toward innovation and customer-first solutions in the dynamic blockchain space. We are honored to receive this recognition, which reaffirms our mission to make blockchain technology accessible, secure, and impactful for users across the globe,” said Joan Han, Sales & Marketing Director at Bybit. “As we move forward, we remain dedicated to enabling the mass adoption of blockchain and building the future of digital finance.”
Bybit’s commitment to advancing cryptocurrency services is evident through its continuous introduction of innovative features, such as high-performance trading tools, enhanced liquidity options, and a secure, user-friendly platform. With over 50 millions of users worldwide relying on Bybit, the platform stands as a trusted leader in creating a sustainable and inclusive future for blockchain technology.
#Bybit / #TheCryptoArk
Bybit is the world’s second-largest cryptocurrency exchange by trading volume, serving over 50 million users. Established in 2018, Bybit provides a professional platform where crypto investors and traders can find an ultra-fast matching engine, 24/7 customer service, and multilingual community support. Bybit is a proud partner of Formula One’s reigning Constructors’ and Drivers’ champions: the Oracle Red Bull Racing team.
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2024-DNA Fund, the Financial Institution of the future in high-ticket emerging tech and web3 investments, has announced its acquisition of Coral Capital Holdings LLC, an established investment management firm that has previously managed millions in the DNA founders’ personal funds.
As early-stage investors in established Web3 brands and founders of some of the sector’s most notable projects, DNA and its founders have invested in or founded projects such as Tether, EOS, Mastercoin, Bancor, and Hedera Hashgraph. The acquisition will see the DNA Fund manage an additional AUM of over $50 million, which includes Coral’s high-yielde hedge funds and venture funds focused on DeFi, Al, blockchain, and other emerging technology sectors. Some of Coral’s top-performing investments include Near Protocol and Atmos Labs.
Thomas L. McLaughlin, Coral’s Chief Investment Officer, will continue in his role, managing the funds with a unique focus and strategy aimed at maximizing investor returns.
Regarding the acquisition, Christopher Miglino, CEO of DNA Fund, said. “By bringing Coral Capital under our umbrella, we are not only expanding our investment capabilities but also enhancing our ability to offer unique, high-growth opportunities to our clients. Our combined expertise allows us to navigate the complexities of the digital asset landscape and continue delivering value to our investors.”
Thomas L. McLaughlin, CIO of Coral Capital Holdings, added, “Joining forces with DNA Fund is an exciting new chapter for Coral. Our shared vision for leveraging technology to drive financial growth is perfectly aligned. Together, we are set to redefine what’s possible in digital asset investments and deliver superior results for our investors.”
Since its inception in 2021, Coral has delivered consistent returns with innovative strategies, delivering high multiples on the benchmark of the overall market cap of digital assets. Coral’s Flagship fund, initially started as a market-neutral vehicle, was rebranded in 2023 as a discretionary liquid token, surviving a number of high-volatility events, including FTX and Terra.
With a 61.6% return (net of fees) and a maximum annual drawdown of only 11.6% in FY 2022. these funds have outperformed the broader digital asset market. Over a similar period, Bitcoin returned 36.7%.
Through this acquisition, DNA Fund also aims to capitalize on the growing interest from institutional investors and expand into several new verticals over the coming year, including a Bitcoin & Ether Yield Fund, as well as more speculative funds focused on Al, memecoins and microcaps.
The post DNA Fund Acquires Coral Capital; Adds $50M AUM in Web3 & Emerging Tech appeared first on HIPTHER Alerts.
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