# Home - YEESMA (yeesma.com) > Yokeless/Yoked Electrically Excited Synchronous Machine, YEESMA YEESMA is a groundbreaking motor technology that eliminates the need for rare-earth magnets, significantly reducing material costs and environmental impact. Power Without Rare Earths. Progress Without Limits. At YEESMA, we’re redefining electric mobility with motors that are high-performance, low-emission, and free from rare-earth dependencies. Sustainability Meets High Efficiency Rare-earth magnet-free motors for your EV. Join us on the journey toward efficiency, sustainability, and cost-effectiveness. Rare-Earth Free vs. Bulkier Motor & Expensive Inverter As an axial flux EESM, YEESMA is more compact, requires lower phase current. Hence it reduces inverter costs. Put it simply: a cheaper motor and a cheaper inverter. That’s how we deliver significant reductions in overall BOM costs. To reduce the use of rare-earth magnets and achieve the same torque and power ratings, but the overall package becomes 30–40% larger and the inverter requires higher phase current. It is not cheaper for the whole packaging. Business Legal documents We offer cost-effective, sustainable, and efficient electric drive unit solutions for mobility. YEESMA wants to transform sustainability and cost from a dream, to a vision, to a reality. With over 35 years in the automotive and electric motor industry, Philippe Siad FARAH, our Co-founder of YEESMA, shares the why behind their journey: A vision to remove rare-earth magnets from electric motors—not just to reduce costs, but to solve real issues of sustainability, supply chain risk, and environmental harm. Behind YEESMA The People, the Vision, the Journey Step inside YEESMA and get to know the passionate teams driving our innovation forward. In these exclusive videos, our co-founders and team members share the story behind our mission, the challenges we’ve overcome, and the exciting progress shaping our future. ## Sitemap: - [About us](https://yeesma.com/about-us) This Is YEESMA Driven by Purpose, Powered by People YEESMA Business Ethics is our compass for sustainable responsibility—driving us to act with integrity, build lasting trust, and ensure every decision supports a greener, more ethical future. Dr-Ing. Shafigh Nategh Chair Electrical Machines Technical Committee at IEEE Adjunct Associate Professor & Docent at Chalmers University of Technology Senior Technical Adviser at DeepDrive Senior Principal Engineer & Engineering Manager at Polestar Principal Engineer in Electrical Machines at Volvo Cars Traction Motors R&D Project Leader at ABB Lead Designer of Electrical Machines at Rolls-Royce Inventor Dr-Ing. Philippe Siad Farah VP Eng. Electric Powertrain Systems at Polestar VP Eng. Mechatronics at Marelli Eng. Director Machines & Drives at Great Wall Motor Eng. Director Valeo Electric Machines Design at Valeo Global Chief Engineer Systems at Delphi Inventor & CEO of YEESMA Sustainability isn’t a trade-off—it’s our edge. About us Sustainable, Efficient, and Cost-Effective Born from necessity and shaped by vision, YEESMA is committed to solving real-world problems—like environmental damage, resource instability, and manufacturing complexity—through technical excellence and responsible engineering. To our Dear Customers We deliver scalable, high-performance electric motors that simplify your manufacturing, cut emissions, and reduce costs—without compromising on power or reliability. To the Industry YEESMA sets a new standard in motor design—rare-earth magnets-free, compact, and built for long-term sustainability. We’re proof that cleaner doesn’t mean weaker.” To Society By eliminating rare-earth elements, we reduce environmental harm, promote ethical sourcing, and strengthen supply chain .resilience—accelerating the shift toward a cleaner mobility future Built for the Planet, Designed for Performance. This is a company that doesn’t just follow trends, it challenges outdated norms and creates scalable, sustainable alternatives. YEESMA redefines what’s possible Delivering high-performance motor technology without rare-earths. Our rare-earth-free architecture is reshaping what's possible in electric motor design. Explore the innovation driving our mission. We offer cost-effective, sustainable, and efficient electric drive unit solutions for mobility. Business Legal documents YEESMA is Hiring ! YEESMA is looking for a Mechanical Engineer with strong CAD design expertise to join our growing team. You’ll work on advanced electric machines for automotive and industrial applications, collaborating closely with electrical and thermal engineers in a dynamic startup environment. Mechanical Engineer – CAD Design for Electric Machines Wanna Join Us? It's the time to build the future together. Please send your CV at our Career@yeesma.com - [Imprint](https://yeesma.com/imprint) Privacy Policy 1. Data Protection at a Glance General Information The following information provides a simple overview of what happens to your personal data when you visit this website. Personal data is any data with which you can be personally identified. Detailed information on data protection can be found in our privacy policy listed below this text. Data Collection on This Website Who is responsible for data collection on this website? Data processing on this website is carried out by the website operator. 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This may include IP addresses, contact inquiries, meta and communication data, contract data, contact details, names, website access data, and other data generated via a website. External hosting is carried out for the purpose of fulfilling contracts with our potential and existing customers (Art. 6 para. 1 lit. b GDPR) and in the interest of secure, fast, and efficient provision of our online offering by a professional provider (Art. 6 para. 1 lit. f GDPR). If appropriate consent has been obtained, processing is based exclusively on Art. 6 para. 1 lit. a GDPR and § 25 para. 1 TDDDG, provided the consent includes the storage of cookies or access to information on the user's device (e.g., device fingerprinting) as defined by... - [Technology-YEESMA](https://yeesma.com/technology-yeesma) Yokeless/Yoke Electrically Excited Synchronous Machine At the core of YEESMA is a patented yokeless axial flux design, featuring rotor and stator made from either Laminated Steel or Soft Magnetic Composites (SMC). This innovative structure creates multiple airgaps, enabling: Higher rotor ampere-turns Significantly reduced armature reaction Greater torque output within a compact volum YEESMA Axial Flux EESM Solutions How can electric motors deliver higher torque without increasing stator size or relying on rare-earth materials? This question lies at the heart of next-generation motor development —especially as industries demand more compact, efficient, and sustainable e-mobility solutions. YEESMA is a top notch technology company using Artificial Intelligence Techniques for its Optimization Motor Design. Smart Features for Motor Control are also considered within the Inverter. The great headline Short text for a typical Onepage use-case. Around 30 words suffice to neatly fill an average paragraph, ensuring a clean appearance and readability. A more stable, cost-effective, and sustainable path starts here Unlike permanent magnet machines, YEESMA’s use of copper DC field windings enables precise control of excitation and places the windings in direct contact with the cooling medium —ideal for oil cooling and continuous high-power operation. Technology Comparison at a Glance The absence of rare-earth materials simplifies rotor construction, eases assembly, and avoids the price volatility associated with global magnet supply chains. YEESMA offers a breakthrough in sustainable, high-performance motor solutions. Inside YEESMA Our Breakthrough Motor Technology YEESMA is a patented rare-earth free electric machine technology which offers key benefits in comparison to the state-of-the-art available e-machine technologies in the market. YEESMA redefines what’s possible Delivering high-performance motor technology without rare-earths. Welcome to a more stable, cost-effective, and sustainable future. This is where the new standard begins. We offer cost-effective, sustainable, and efficient electric drive unit solutions for mobility. Business Legal documents - [Application](https://yeesma.com/application) The New Era of Pickup Trucks YEESMA’s Multi-Stack architecture—featuring 3 rotors and 2 stators—delivers exceptional torque density and smooth power delivery in a compact design. Built for electric pickup trucks, it provides the strength and responsiveness needed for heavy loads and demanding terrains. Key Performance Highlights: Sustainability: 49% CO₂ reduction Cost: 71% BOM reduction Compactness: 10% Volume reduction Next-Gen Power for 2- & 3-Wheelers YEESMA empowers 2- & 3-wheeler OEMs and Tier 1s to accelerate innovation with compact, rare-earth-free motors—delivering cleaner, more cost-effective urban mobility. Key Impact Metrics: Sustainability: 46% CO₂ reduction Cost: 31% BOM reduction Performance: 25% Volume reduction Efficiency: 3% increase Sailing Into Sustainability Marine Boats YEESMA powers marine vessels with sustainable, rare-earth-free electric drives. Its compact axial flux design and higher power factor deliver ~20% more power than AF PM motors—enabling efficient, scalable propulsion for a cleaner future. Key Performance Highlights: Sustainability: 22% CO₂ reduction Cost: 36% BOM reduction Efficiency: 20% Power Increase Redefining Your Ride Premium Electric Motorcycles YEESMA offers rare-earth-free electric motors with out-of-the-box patented technology, delivering cost-effective, sustainable, and high-performance drive solutions—perfectly tailored for premium electric motorcycles that demand power, precision, and efficiency. Key Impact Metrics: Sustainability: 70% CO₂ reduction Cost: 70% BOM reduction Compactness: 23% weight reduction UAV and Drone Propulsion Systems Fly Longer, Sustainably, Sovereignly YEESMA studies UAV and Drone Propulsion Systems with sustainable, rare-earth-free electric drive solutions. Its compact and power dense Axial Flux Electric Motor without any dependence on rare-earth magnets makes it a strong candidate for "sovereignty sensitive" applications. Key Performance Highlights: Sustainability: 54% CO₂ Reduction​ Cost: 62% BOM Reduction Weight reduction: TBC ​ Driving Into Tomorrow xEV Passenger Cars YEESMA powers xEV passenger cars with sustainable, rare-earth-free electric drive solutions. Its compact axial flux design, high efficiency, and scalable architecture deliver enhanced range and performance—driving cleaner, cost-effective mobility for the future. Key Performance Highlights: Sustainability: 58% CO₂ reduction Cost: 48% BOM reduction Compactness: 14% weight Reduction *Inverter cost reductions not accounted for. YEESMA Technology in Action Real-World Applications YEESMA partners with leading OEMs and Tier 1s to drive innovation in mobility. With a focus on cost-effectiveness, sustainability, and efficiency, we deliver advanced drive unit solutions tailored for diverse mobility applications. Have questions about our technology, partnership opportunities, or how YEESMA can power your next innovation? Whether you're an OEM, Tier 1, or curious collaborator, We’re here to help. Reach out to start... - [contact](https://yeesma.com/contact) Have questions about our technology, partnership opportunities, or how YEESMA can power your next innovation? We’re here to help. Reach out to start a conversation—we’d love to hear from you. Schedule a call with us now YEESMA Sarl 7 rue Henri Kirpach L-8237 Mamer Have a question or need more information? Feel free to contact us by email or simply give us a call — we’ll get back to you as soon as possible. Let's Connect ! Ready to electrify your next project with rare-earth-free innovation? Whether you're an OEM, Tier 1, or curious collaborator, let's talk about how YEESMA can support your goals. We offer cost-effective, sustainable, and efficient electric drive unit solutions for mobility. Business Legal documents - [News](https://yeesma.com/news) YEESMA wants to transform sustainability and cost from a dream, to a vision, to a reality. With over 35 years in the automotive and electric motor industry, Philippe Siad FARAH, our Co-founder of YEESMA, shares the why behind their journey: A vision to remove rare-earth magnets from electric motors—not just to reduce costs, but to solve real issues of sustainability, supply chain risk, and environmental harm. Challenges in electric motor industry: Balancing Performance, Cost, and Sustainability 50% BOM cost reduction and 70% lower CO₂ emissions That’s where 𝗬𝗘𝗘𝗦𝗠𝗔 comes in. All while reducing dependence on rare-earth magnets that are expensive, environmentally damaging, and mostly sourced from a single country, creating serious supply chain risks. Let's explore how YEESMA address this issue by unique EESM-based axial flux technology and without rare-earth magnets. Collaboration with MeltIngLab (Unimore) From Concept to Reality - Prototyping and Testing – Prof. Stefano Nuzzo Together with MeltIngLab, this cooperation brings academic depth and industrial focus, making 𝗬𝗘𝗘𝗦𝗠𝗔’s technology more solid and closer to real-world applications. As Prof. Nuzzo highlighted, open-mindedness and practical feasibility are key in turning research into reality. "It has been the right convergence between academic research approaches and industrial pragmatism." Rare-Earth Free vs. Bulkier Motor & Expensive Inverter To reduce the use of rare-earth magnets and achieve the same torque and power ratings, but the overall package becomes 30–40% larger and the inverter requires higher phase current. In the end, it is not cheaper for the whole packaging. As an axial flux EESM, YEESMA is more compact, requires lower phase current. Hence it reduces inverter costs. Put it simply: a cheaper motor and a cheaper inverter. That’s how we deliver significant reductions in overall BOM costs. Behind YEESMA The People, the Vision, the Journey Step inside YEESMA and get to know the passionate teams driving our innovation forward. In these exclusive videos, our co-founders and team members share the story behind our mission, the challenges we’ve overcome, and the exciting progress shaping our future. YEESMA Newsroom Welcome to our Latest News page, where we share the newest updates, insights, and stories from YEESMA. Here, you’ll find exclusive interview videos and behind-the-scenes content to keep you connected with our journey and innovations. YEESMA redefines what’s possible Delivering high-performance motor technology without rare-earths. Our rare-earth-free architecture is reshaping what's possible in electric motor design. Explore the innovation driving our mission. We offer cost-effective, sustainable, and efficient electric drive unit solutions for mobility. Business Legal documents CTI 2025 Highlight｜ YEESMA's Secret Sauce of Cost Reduction: Thermal ! At CTI 2025, one message came through loud and clear from OEMs and Tier 1s: The industry is shifting its ...