Abstract: This paper proposes a novel Bi-Magnet machine design concept in which ferrite and rare earth magnet materials are both utilized for torque production. The proposed design aims to reduce the cost of permanent magnet machines by minimizing the use of expensive high-grade rare earth magnet materials without compromising the high …
WhatsApp: +86 18221755073
There are now more than 1.5 million plug-in hybrid electric vehicles (HEVs) and battery electric vehicles (BEVs) that have been commercially produced in the world during the past 11 years, and it is likely that the number produced during 2016 exceeded 700,000, a new record. A large percentage of those electrified vehicles use ac …
WhatsApp: +86 18221755073
Rare earths usually exist in single or binary mixed forms [16].In order to obtain a single rare earth element, researchers have conducted a lot of research [17].Pyrometallurgical and hydrometallurgical processes are commonly used in the reports [11].Although pyrometallurgy reduces the use of organic solvents, the melting of metals …
WhatsApp: +86 18221755073
Constituting the bulk of rare-earth elements, lanthanides need to be separated to fully realize their potential as critical materials in many important technologies. The discovery of new ligands for …
WhatsApp: +86 18221755073
Abstract: Since the cost of rare-earth permanent magnets (PMs), such as NdFeB and SmCo, is more and more increasing, there is a great interest in designing PM machines without adopting such rare-earth PMs, i.e., replacing them with cheaper ferrite magnets. Referring to the interior PM (IPM) machines, the expected performance …
WhatsApp: +86 18221755073
Vehicle Technologies Office; Multi-Objective Design Optimization of 100-kW Non-Rare-Earth or Reduced-Rare-Earth Machines
WhatsApp: +86 18221755073
These attributes are in large part a benefit of the use of rare-earth permanent magnets. Machines discussed include a sheep shearing hand-piece, a direct drive actuator, an implantable centrifugal ...
WhatsApp: +86 18221755073
1. Introduction. Critical raw materials are defined by two factors: economic importance and security of supply risks (European Commission, 2020).Rare earth elements (REE) qualify as critical materials because they are essential components in various crucial technologies used extensively in the energy, telecommunications and electronics, …
WhatsApp: +86 18221755073
DOI: 10.2172/1638508 Corpus ID: 252031401; Dual Phase Soft Magnetic Laminates for Low-cost, Non/Reduced-Rare-Earth Containing Electrical Machines @inproceedings{Subramanian2020DualPS, title={Dual Phase Soft Magnetic Laminates for Low-cost, Non/Reduced-Rare-Earth Containing Electrical Machines}, author={P. …
WhatsApp: +86 18221755073
Many electric traction drive systems (ETDSs) are driven by electric motors primarily composed of high-energy rare-earth (RE) permanent magnets (PMs), such as …
WhatsApp: +86 18221755073
This paper presents designs that reduce the PM rare-earth content for Electric Vehicles (EVs) and will ensure having practical designs that do not run the risk of permanent demagnetization. This paper covers a new emerging class of electrical machines, namely, Magnetic Gears (MGs) and Magnetically Geared Machines (MGMs). This particular kind …
WhatsApp: +86 18221755073
Rare earth elements (REE), classified as critical minerals which are crucial for clean energy technologies, face soaring demand. While economic deposits are found in limited geologic environments including carbonatites and ion-adsorption clays, unconventional, secondary sources such as those from sedimentary basins could hold …
WhatsApp: +86 18221755073
Non/Reduced-rare-earth Containing Electrical Machines. This presentation does not contain any proprietary, confidential, or otherwise restricted information. Project ID# elt090. PR Subramanian – Principal Investigator Min Zou …
WhatsApp: +86 18221755073
Rare earth magnets come from one of the elements in the Lanthanide series of metals in the periodic table. The two most common rare earth magnets are Neodymium (Nd-Fe-B) and Samarium Cobalt (SmCo). …
WhatsApp: +86 18221755073
In 1945, scientists constructed ENIAC, the world's first programmable, general purpose digital computer (SN: 2/23/46, p. 118). Nicknamed the "Giant Brain," ENIAC weighed more than four elephants and had a footprint roughly two-thirds the size of a tennis court. Less than 80 years later, the …
WhatsApp: +86 18221755073
A bstract-Rare-earth-permanent-magnet excitation can provide considerable improvement in the energy efficiency of electrical machines. Tolerating motor terminal short circuit and avoiding magnet irreversible demagnetization must be studied during the design and prototyping stage of a permanent-magnet motor. Electrical machinery design …
WhatsApp: +86 18221755073
August 30, 2020. Life cycle assessment of new recycling and reuse routes for Rare Earth Element machines in hybrid/electric vehicles. Without written permission of the supervisor(s) and the author(s) it is forbidden to reproduce or adapt in any form or by any means any part of this publication.
WhatsApp: +86 18221755073
Automotive applications require electrical machines designed for high torque density, wide speed range, and low cost. NdFeB magnets can achieve a high torque density and wide speed range, and however, they have a high cost. Therefore, this article explores the capability of rare-earth-free (REF) design through a PM-assisted …
WhatsApp: +86 18221755073
Due to the rising price of rare-earth materials, permanent-magnet (PM) machines in different applications have a trend of reducing the use of rare-earth materials. Since iron-core poles replace half of PM poles in the consequent pole (CP) rotor, the PM machine with CP rotor can be a promising candidate for less rare-earth PM machine. Additionally, …
WhatsApp: +86 18221755073
Mythical Machines. Thoughtfully designed, crafted & curated steel adventure bikes. ... Rare Earth Cycle offers design and fabrication expertise along with first hand touring knowledge. This leads to artful, …
WhatsApp: +86 18221755073
Modification with rare-earth (RE) metals has emerged as an important approach for enhancing the properties of titanium dioxide. Herein, the visible-light photocatalytic activity of RE-TiO 2 (RE: Tm, Er, Nd, Dy, Lu, La, Ho, Pr, Tb, Sc, Ce, Yb, Sm, Gd, Y, or Eu) was investigated using a combination of computer simulations and …
WhatsApp: +86 18221755073
Switching Flux Permanent Magnet machines compared with Interior Permanent Magnet machines are presented to be interesting solutions in terms of torque per volume density, compactness, active material layout and cooling capability. The flux linkage results to be bi-directional and voltage is almost sinusoidal. These machines are then interesting for AC …
WhatsApp: +86 18221755073
Demagnetization Performance Enhancement of Heavy Rare Earth Free Permanent Magnet Machines Abstract: This paper proposes a 90% HRE-free hybrid rotor concept to enhance the demagnetization performance of a 100 kW motor for traction applications. The demagnetization analysis is presented for three cases- for a motor with HRE-free, …
WhatsApp: +86 18221755073
Rare-earth frontiers: From terrestrial subsoils to lunar landscapes. Cornell University Press, 2017. S.H. Ali. Social and environmental impact of the rare-earth industries .
WhatsApp: +86 18221755073
Electric machines with rare-earth magnets have the highest efficiency and power density. However, rare-earth magnets are expensive, and their manufacturing process, as well as mining rare-earth raw materials, is harmful for the environment. Therefore, developing energy-efficient electric machines without rare-earth magnets is …
WhatsApp: +86 18221755073
This paper systematically presents the development of novel stator electrically field excited synchronous machines having salient pole rotors without any coils or magnets. This kind of new machine does not use slip-rings/brushes required in the conventional rotor wound field machines and combines the synergies of wound field …
WhatsApp: +86 18221755073
Demand signals for rare earths are projected to rise as the world electrifies with machines that require highly specialized rare earth magnets. According to a report by independent research firm Adamas …
WhatsApp: +86 18221755073
The objective of this paper is to present the newly redesigned electric traction machines for added performance while simultaneously reducing the rare earth and heavy rare earth content by over 80% and 50% respectively and in turn the cost of the system and yielding all around "cleaner" and more sustainable vehicle.
WhatsApp: +86 18221755073
Therefore, the Special Issue aims to collect original research and review articles on different design and control methodologies or solutions for PM-free or rare-earth-free PM motors targeting for EV applications. The topics of interest include but are not limited to the following: Novel PM-free or rare-earth-free PM machine topologies;
WhatsApp: +86 18221755073
Moreover, the materials-oriented machine learning incorporates the structural characteristics of rare-earth disilicates into performance prediction and opens new possibilities for rapid prediction of the thermal properties of polycrystalline RE 2 Si 2 O 7. Declaration of Competing Interest
WhatsApp: +86 18221755073