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  • Tau Group's R&D Team Publishes Study on Thermal Aging's Impact on Electrical Performance

    The research and development team at Tau Group recently published a study examining the impact of thermal aging on the electrical performance of wire coated with PFA and PAI. The study, which was published in IEEE Xplore, offers insights into the behavior of these essential components under varying environmental conditions. The study examines the intricate interplay between thermal aging and electrical performance, providing critical data on the behavior of PFA and PAI coated wire over time. By analyzing the effects of thermal aging in controlled environments such as air, oil, and saltwater, the study provides actionable insights for industry professionals seeking to optimize electrical systems' reliability and performance. "This study represents a significant advance in our understanding of the complexities of thermal aging and its effects on dielectric properties," states Enrico Cepparrone, R&D Product Manager at Tau Group. "It is of paramount importance to gain an understanding of how these coatings respond to thermal stress in order to ensure the longevity and efficiency of electrical systems." The insulation of stator winding wires plays a pivotal role in ensuring the reliable and long-lasting operation of electric motors. In light of the ever-increasing demand for product lifetime assurance of electrical components, Tau Group reaffirms its unwavering commitment to continuous research and its dedication to advancing technology to meet the market's demand. Read the study: Effect of Thermal Aging on Electrical Performance of Perfluoroalkoxy- and Polyamide-Imide-Coated Magnet Wire | IEEE Journals & Magazine | IEEE Xplore About Tau Group Tau is a technology company at the core of energy transition, decarbonization of energy and electrification of transport. Its patented technologies reconcile the necessity of sustainable, resource-minimizing manufacturing with the power, reliability and performance that electrification requires to enable smaller, greener, longer-lasting and more powerful motors, transformers and generators. Tau focuses on carbon-conscious protective coatings for high-performance and standard copper, aluminium and steel wires. Visit www.tau.group or follow Tau on X and LinkedIn About IEEE Magazine IEEE is the world’s largest technical professional organization dedicated to advancing technology for the benefit of humanity. IEEE and its members inspire a global community through its highly cited publications, conferences, technology standards, and professional and educational activities. IEEE Xplore is the flagship digital platform for discovery and access to scientific and technical content published by the IEEE (Institute of Electrical and Electronics Engineers) and its publishing partners. Visit IEEE Magazine and IEEE Xplore

  • Tau Group Attains ISO 14001 Certification, Reinforcing Commitment to Environmental Responsibility

    Tau Group demonstrates its commitment to reducing its carbon footprint, fostering social responsibility, and advancing sustainability initiatives. Turin, February 07, 2024. Tau Group is proud to announce its recent achievement of ISO 14001 certification, underscoring the company's unwavering dedication to excellence and environmental stewardship. ISO 14001 is an internationally recognized standard for environmental management systems (EMS), developed by the International Organization for Standardization (ISO). This certification serves as a testament to Tau Group's commitment to establishing and enhancing effective environmental practices within its operations. By integrating ISO 14001 standards into its business processes, Tau Group has embraced eco-friendly practices, significantly reducing its carbon footprint and fostering social responsibility. This certification demonstrates Tau Group's ongoing efforts to minimize environmental impact, ensure compliance with regulations, and advance sustainability initiatives. "Obtaining ISO 14001 certification reflects Tau Group's dedication to environmental responsibility. It demonstrates our commitment to sustainable practices and reinforces our position as a leader in environmental stewardship," said Carlotta Zago, Quality Manager at Tau Group. Key elements of ISO 14001 certification include the establishment of an environmental policy, identification of environmental aspects and impacts, implementation of environmental management systems, monitoring of environmental performance, and continual improvement. This achievement reaffirms Tau Group’s commitment to environmental responsibility to stakeholders, customers, regulators, and the broader community. As Tau Group continues to progress, it remains dedicated to upholding these standards, fostering innovation, and delivering unparalleled value to its stakeholders. About Tau Group Tau is a technology company at the core of energy transition, decarbonization of energy and electrification of transport. Its patented technologies reconcile the necessity of sustainable, resource-minimizing manufacturing with the power, reliability and performance that electrification requires to enable smaller, greener, longer-lasting and more powerful motors, transformers and generators. Tau focuses on carbon-conscious protective coatings for high-performance and standard copper, aluminium and steel wires. Visit www.tau.group or follow Tau on X and LinkedIn About ISO 14001 ISO 14001 is the internationally recognized standard for environmental management systems (EMS). It provides a framework for organizations to design and implement an EMS, and continually improve their environmental performance. By adhering to this standard, organizations can ensure they are taking proactive measures to minimize their environmental footprint, comply with relevant legal requirements, and achieve their environmental objectives. The framework encompasses various aspects, from resource usage and waste management to monitoring environmental performance and involving stakeholders in environmental commitments.

  • Tau Group Closes €11 Million Extension to Series-B Round to Fuel Growth and Enhance Production Capacity

    The round, led by CDP Venture Capital and Santander Alternative Investments (through Santander InnoEnergy Climate Fund), is joined by existing investors and unfolds concurrently with Tau Group’s expansion of production capacity at its new facility. Turin, January 30, 2024. Tau Group, a leading technology company driving energy transition and decarbonization efforts, is establishing a new global standard in electric motor insulated wire. Tau has successfully closed a €11 million extension to its Series-B funding round. CDP Venture Capital and Santander Alternative Investments (through Santander InnoEnergy Climate Fund) took the lead in this round, with continued support from existing investors. This strategic funding aligns with Tau's concurrent expansion of production capacity in a new facility, geared towards fulfilling long-term supply agreements recently inked with automotive industry partners. Tau Group stands at the forefront of the energy transition, specializing in the decarbonization of energy and electrification of transport. The company's patented technologies strike a balance between sustainable, resource-minimizing manufacturing and the robust performance required for effective electrification. Their focus on carbon-conscious protective coatings for high-performance copper, aluminum, and steel wires has positioned them as a key player in advancing smaller, greener, longer-lasting, and more powerful motors, transformers, and generators. "This €11 million investment represents a pivotal moment for Tau Group and reinforces our commitment to leading the charge in sustainable technology" said Francesco Taiariol, CEO and Co-founder at Tau Group, "With the support of CDP Venture Capital and Santander InnoEnergy Climate Fund, we are poised to accelerate the adoption of e-mobility, bringing about positive change in the global transportation landscape." CDP Venture Capital participates in the operation through its corporate venture capital fund Corporate Partner I, with the IndustryTech and the EnergyTech Sub funds. CDP Venture Capital invests jointly with the regional co-investment fund Piemonte Next, established and managed by CDP Venture Capital and underwritten by the Financial Institution of Piemonte Region Finpiemonte with the objective of maximizing investments in innovation for the territory. “The revolutionary technology patented by Tau Group promises to significantly improve conductor performance, providing a competitive advantage in the industry and paving the way for more sustainable solutions in the world of electrical conduction” comments Enrico Filì, Head of IndustryTech sub-fund of Corporate Partners I fund, CDP Venture Capital, “The new funding will support Tau production capacity through a new plant and new production lines targeted at fulfilling the increasing demand from the international automotive sector. Tau represents an ideal target for CDP Venture Capital's cvc fund helping companies creating bridges between large industrial groups and the new disruptive solutions”. Santander InnoEnergy Climate Fund’s mission is that of accelerating the energy transition across different sectors, including that of mobility. Such focus, together with the expertise and network of the corporations that are behind the fund (Santander and InnoEnergy), make it a perfect ally for Tau Group at this point in time. As Tau Group continues to advance in sustainable magnet wire manufacturing, the additional funding sets the stage for an exciting chapter of growth and impact on a global scale. The funds raised in this extension will propel Tau Group's growth trajectory, enhancing its ability to achieve ambitious goals. This investment will play a pivotal role in scaling up production capacity, a crucial step in meeting the demands arising from Tau Group's recent long-term supply agreements within the automotive sector. The company remains dedicated to advancing sustainability, fostering innovation, and contributing to the broader goals of the energy transition. About Tau Group Tau is a technology company at the core of energy transition, decarbonization of energy and electrification of transport. Its patented technologies reconcile the necessity of sustainable, resource-minimizing manufacturing with the power, reliability and performance that electrification requires to enable smaller, greener, longer-lasting and more powerful motors, transformers and generators. Tau focuses on carbon-conscious protective coatings for high-performance and standard copper, aluminium and steel wires. Visit www.tau.group or follow Tau on X and LinkedIn About CDP Venture Capital CDP Venture Capital is an asset management company participated by CDP Equity (70%) and Invitalia (30%) with the goal of making venture capital a cornerstone of Italy's economic development and innovation, creating the conditions for the overall, sustainable growth of the entire innovation ecosystem. CDP Venture Capital manages 13 investment funds, amounting to over 3 billion euros in resources that support innovative enterprises at all stages of their life cycle, making both direct and indirect investments (funds of funds). About Santander Alternative Investments SGIIC Santander Alternative Investments SGIIC, part of Santander Asset Management, is an alternative investment fund manager with EUR 2 billion in committed capital through debt finance, trade finance, venture capital, real estate, infrastructure and FoF strategies. It has 60 employees, half of whom make up its investment teams. As part of Santander Wealth Management & Insurance (WM&I), Santander Asset Management is a global asset manager with firm roots in Europe and Latin America. Stretching back over 50 years and operating in 10 countries, it has EUR 215 billion in assets under management across all types of investment vehicles, from mutual funds and pension plans to institutional mandates and alternative investments. It has over 820 employees all over the globe, some 210 of whom are investment specialists with over 10 years’ experience in asset management. Its investment methods and local teams’ analysis capabilities, coupled with stringent risk control, give it a unique insight into market opportunities and its clients’ needs. Figures as at December 2023.

  • Tau Group Named on the 2024 Global Cleantech 100

    Global Cleantech 100 list: Tau Group makes significant contributions to sustainable innovation. Turin, January 15, 2024. Tau Group, a technology company leading the energy transition, decarbonization and electrification of transport, has been named on Cleantech Group’s 2024 Global Cleantech 100. This annual list, now in its 15th year, serves as a definitive guide to the top companies making significant contributions to sustainable innovation. Tau has positioned itself as an innovative supplier to the automotive industry by establishing a new global standard in electric motor insulated wire. Its wire addresses the industry’s demand for the next generation of motors to have a minimized carbon footprint, use fewer resources, and enhance the efficiency, range, and recharge time of electric vehicles. The key lies in the wire’s superior resistance to partial discharge and its ability to accommodate voltages of 800V and higher. The use of high-performance polymers with proprietary coating technology enables Tau to produce wire that facilitates higher performance, leading to smaller and more reliable electric motors—a crucial element in the accelerating adoption of electric vehicles. The Global Cleantech 100 features top private companies with innovative solutions in sectors like Agriculture & Food, Energy & Power, Materials & Chemicals, Resources & Environment, and Transportation & Logistics. Selected through a rigorous evaluation, these companies provide sustainable answers to address the climate and environmental crisis. “These innovative companies are driving positive change and are at the forefront of enabling the global transition to a more sustainable future,” said Richard Youngman, CEO, Cleantech Group.  “The Global Cleantech 100 is a recognition of the market’s positive view on their progress to date and their potential impact in building a cleaner, decarbonized world.” "At Tau Group, we believe in the power of innovation to address environmental challenges. Being part of Cleantech Group's Global Cleantech 100 highlights our commitment to providing cutting-edge solutions for a more sustainable and energy-efficient future" said Francesco Taiariol, Tau Group’s Co-founder and CEO. In line with its dedication to continuous improvement, Tau Group is actively increasing its production capacity in its new plant in Pianezza (TO), Italy. This expansion will play a pivotal role in meeting the growing demand for its insulated wire, reinforcing Tau Group's position in the energy transition and sustainable innovation. Download the Global Cleantech 100 complimentary report where Cleantech Group shares further insights and perspectives on the state of global cleantech innovation. About Tau Group Tau is a technology company at the core of energy transition, decarbonization of energy and electrification of transport. Its patented technologies reconcile the necessity of sustainable, resource-minimizing manufacturing with the power, reliability and performance that electrification requires to enable smaller, greener, longer-lasting and more powerful motors, transformers and generators. Tau focuses on carbon-conscious protective coatings for high-performance and standard copper, aluminium and steel wires. Visit www.tau.group or follow Tau on X and LinkedIn About Cleantech Group Cleantech Group is the leading authority on global cleantech innovation. Since 2002, its research has assisted corporations, the public sector, investors, and others in identifying, assessing, and engaging with innovative solutions and opportunities related to the world’s massive and growing environmental and climate challenges.

  • Tau Group Named Hello Tomorrow Deep Tech Pioneer

    Tau Group has been selected as a Hello Tomorrow Deep Tech Pioneer Hello Tomorrow Investor Day & Global Summit, Paris Turin, November 24, 2023. Tau Group Tau Group has been selected as a Hello Tomorrow Deep Tech Pioneer. Tau Group proudly announces its selection as a Hello Tomorrow Deep Tech Pioneer for 2023, positioning itself among a distinguished group of visionaries, innovators, and disruptors at the forefront of revolutionizing industries through deep tech. This follows a rigorous selection process that evaluated 4,500 applications from 120 countries. As part of the DTP, Tau Group will participate in Investor Day on March 20th, 2024, and in The Hello Tomorrow Global Summit from March 21st to 22nd, 2024, in Paris. Investor Day provides Tau Group with the opportunity to engage with key stakeholders, pitch groundbreaking ideas, and explore potential collaborations that further enhance our mission. The Hello Tomorrow Global Summit, a two-day event, will bring together 3,000 of the brightest minds in deep tech, fostering discussions about the future of technology and providing a platform for networking and inspiration. This platform serves as a catalyst for Tau Group to continue pushing the boundaries of innovation and making lasting impacts on industries. About Hello Tomorrow Hello Tomorrow was created in 2011 by a group of individuals convinced that science has the potential to change the world for the better, but that the traditional model of technology transfer to bring solutions from lab to market – and from idea to impact – could not rise to this challenge. Since then, Hello Tomorrow has built and orchestrated the largest and widest Deep Tech network as well as helping Deep Tech startups and corporations build new solutions. Hello Tomorrow Global Summit is the closing event of the Deep Tech Days, which is a week-long gathering in Paris made up of events dedicated to celebrating and accelerating deep tech innovation: connecting key people bringing solutions from lab to market and strengthening the deep tech investment network. The flagship events include: the Hello Tomorrow Investor Day, Financing the Future and the Global Summit. About Tau Group Tau is a technology company at the core of energy transition, decarbonization of energy and electrification of transport. Its patented technologies reconcile the necessity of sustainable, resource-minimizing manufacturing with the power, reliability and performance that electrification requires to enable smaller, greener, longer-lasting and more powerful motors, transformers and generators. Tau focuses on carbon-conscious protective coatings for high-performance and standard copper, aluminium and steel wires. Visit www.tau.group or follow Tau on X and LinkedIn

  • Tau Group Secures Multi-Year Supply Contract with Volvo Cars for BEV Platform

    We are proud to announce that Tau Group has secured a significant, multi-year magnet wire supply contract with Volvo Cars for the upcoming BEV platform. About Tau Group Tau is a technology company at the core of energy transition, decarbonization of energy and electrification of transport. Its patented technologies reconcile the necessity of sustainable, resource-minimizing manufacturing with the power, reliability and performance that electrification requires to enable smaller, greener, longer-lasting and more powerful motors, transformers and generators. Tau focuses on carbon-conscious protective coatings for high-performance and standard copper, aluminium and steel wires. Visit www.tau.group or follow Tau on Twitter and LinkedIn

  • Tau Invests in a New E-Mobility Production Plant in Pianezza, Italy

    Tau Group is scaling up with a new production plant for E-mobility applications. Local partnerships, innovation, and sustainability Turin, November 09, 2023. Tau Group is proud to announce a significant milestone towards sustainability and innovation with the establishment of an E-Mobility production plant just outside of Turin, in Pianezza, Italy. As we set our sights on electrification, we are establishing a cutting-edge manufacturing facility in Pianezza. Spanning approximately 4,000 square meters, it will have the capacity to produce up to 12,000 tons of high-performance wire and is estimated to create more than 70 new jobs. At Tau, sustainability is at the heart of everything we do. This facility is designed to reduce our current footprint and optimize the energy we use in our process. “Our new facility in Pianezza complements our existing operations in Italy. We value our relationship with local suppliers and are committed to promoting the values of automotive and Made in Italy products. Our partnerships with local businesses and communities will help foster the spirit of innovation and craftsmanship for which Italy is renowned.” Francesco Taiariol, Tau Group’s CEO and Co-founder, explains. We're taking a big step forward in delivering the high-quality products that our customers demand, and this strategic move positions us to meet the supply needs of our automotive customers in the years 2024-2026. This development marks a crucial step towards a sustainable and electrified future for high-performance magnet wire production as Tau scales up to meet the market demand. About Tau Group Tau is a technology company at the core of energy transition, decarbonization of energy and electrification of transport. Its patented technologies reconcile the necessity of sustainable, resource-minimizing manufacturing with the power, reliability and performance that electrification requires to enable smaller, greener, longer-lasting and more powerful motors, transformers and generators. Tau focuses on carbon-conscious protective coatings for high-performance and standard copper, aluminium and steel wires. Visit www.tau.group or follow Tau on Twitter and LinkedIn

  • Tau Achieves IATF 16949 Certification

    On September 9, 2023, Tau achieved another milestone by obtaining the IATF 16949 Certification, confirming the excellence of our Quality Management System in producing solvent-free magnet wires designed for electrical applications. Tau has achieved a significant milestone by obtaining the IATF 16949 certification, which represents the pinnacle of international quality standards within the automotive industry. This certification underscores our unwavering commitment to upholding the highest standards of performance and quality in magnet wire production, aligning seamlessly with industry benchmarks. It signifies our dedication to a culture of continual enhancement and progress. Developed by the esteemed International Automotive Task Force (IATF), the IATF 16949 certification is not merely a recognition; it is an industry imperative. This certification serves as a global benchmark, unifying automotive quality management systems worldwide. It meticulously outlines the prerequisites for quality systems in the design, development, manufacturing, installation, and servicing of automotive-related products. Key Commitments Tau's pledge to meet the stringent standards of IATF 16949 certification encompasses several key commitments: Elevating Product and Process Quality: At the core of this certification is a commitment to enhance both product and process quality. Preferred Supplier Status: Adhering to IATF 16949 standards solidifies our position as a trusted industry partner. Integration with ISO 9001: The IATF 16949 certification seamlessly aligns with ISO 9001, reinforcing our dedication to comprehensive quality management. This integration ensures that we operate within a robust framework of excellence. "Maintaining our IATF certification sets an exceptional standard for Tau, ensuring consistent, high-quality products and a dedication to exceptional customer service for all our customers, not just in the automotive sector." This certification is not just a recognition of our past achievements; it's a promise for the future. We are steadfast in our commitment to invest in technological advancements, driving innovation and setting new industry standards. About Tau Group Tau is a technology company at the core of energy transition, decarbonization of energy and electrification of transport. Its patented technologies reconcile the necessity of sustainable, resource-minimizing manufacturing with the power, reliability and performance that electrification requires to enable smaller, greener, longer-lasting and more powerful motors, transformers and generators. Tau focuses on carbon-conscious protective coatings for high-performance and standard copper, aluminium and steel wires. Visit www.tau.group or follow Tau on Twitter and LinkedIn

  • PEEK MAGNET WIRE

    From efficiency to resilience: Exploring the benefits of TAU's PEEK coated wire Polyetheretherketone (PEEK) belongs to one of the most technologically advanced classes of thermoplastic polymers - polyaryletherketones (PAEK) [1]. PAEK, and especially PEEK, belong to the class of high temperature polymers. PEEK is formed using a stiff aromatic polymer base, contributing to its high temperature and wear resistance compared to other polymers. Thanks to its chemical structure, this polymer combines many advantages. Like most high performance materials, its main disadvantage is its high cost compared to other polymers such as PPS or PAI. As a result, its use is limited to areas where all the high-tech properties are required. The main characteristics of the three most popular high temperature engineering polymers, PEEK, PAI and PPS, and their comparison are shown in table [3]. It shows that PEEK has better thermal stability and can be used in higher temperature applications. The data presented previously refer to the polymer materials themselves. But after they are applied to the wire, their thermal classes of wires are as follows. Based on these values the benefits of PEEK wire are even clearer. To produce a high-quality electric motor, it is essential to use strong, stable stator winding insulation. In fact, the failure rate data for electric motors shows that stator winding damage is the second most common cause of stator failure. According to statistics [4] up to 40% of electric motor failures are due to stator failure. The most common cause of failure is defects in its winding, which consists of polymer-coated copper wire. Therefore, by ensuring reliable wire insulation, it is possible to guarantee the proper functioning of the stator - the heart of the electric car. Another special and important property of PEEK is the peculiarity of its structure. Since PEEK is a semi-crystalline polymer, it is possible to modify its properties by changing its degree of crystallinity. It can be adjusted directly during the coating process, according to technological requirements. The DryCycle® technology (patent EP3518255B1), which allows excellent control of the dynamics of the coating process, can exploit this feature of PEEK to obtain products with the desired properties. In addition, this technology avoids the use of the toxic solvents that are used in the conventional method of enamelling. This makes the process of creating magnetic wires safer and more environmentally friendly. This article presents test data from Tre Tau Engineering's DryCycle® wire made with commercially available PEEK with no fillers. About Tau Tau is a technology company at the core of energy transition, decarbonization of energy and electrification of transport. Its patented technologies reconcile the necessity of sustainable, resource-minimizing manufacturing with the power, reliability and performance that electrification requires to enable smaller, greener, longer-lasting and more powerful motors, transformers and generators. Tau focuses on carbon-conscious protective coatings for high-performance and standard copper, aluminium and steel wires. Visit www.tau.group or follow Tau on Twitter and LinkedIn

  • PFA MAGNET WIRE

    A new frontier for high performance stators Magnetic wire is a key component in various electronic products such as transformers, inductor coils, electromagnets, electric motors and generators. The latter are particularly important to the automotive industry, and the proper functioning of an electric motor for an electric car depends on the stator. All electric motors consist of a rotating part – the rotor –, a stationary part – the stator –, bearings, and a shaft [1]. A review of several studies about electric motor failures resulted from the experience of manufacturers, repair centers and academic studies shows that the faults distribution percentage in electric motors is approximately 45% in the bearings, 35% in the stator, 10% in the rotor, and the remaining 10% in other components [2]. This implies that one-third of all motor failures are to be attributed to stator failures, the most frequent cause being the breakage of its winding. The winding, comprised of a copper conductor with polymer insulation, is highly susceptible to electrical stresses, and mechanical and thermal loads; therefore, it is the most vulnerable component of the stator. Factors such as cracks, pores, wire oxidation, insulation damage, and permeability to gases and liquids can all diminish the dielectric properties of the polymer coating. [3]. Undoubtedly, the thermal and chemical resistance of the wire is directly contingent on the selection of its insulation material. The most used insulation materials for wires include PI, PEI, PAI, and PPS. Additionally, new high-performance polymers such as PEEK and PFA have been recently introduced. Polyimides, which are applied using classic enameling technology, remain the most popular insulation material on the market due to their ability to provide a uniform coating. However, the primary issue with this technology is the use of highly toxic solvents, such as cresol, which can have adverse effects on both worker health and the environment. Consequently, finding an alternative technology for electric wire production is an urgent task. Nowadays, extrusion represents a promising alternative, as this method offers a wider range of applications. For example, it allows to apply polymers that are not suitable for the conventional enameling technology, such as PEEK, PPS, and PFA. PFA (perfluoroalkoxy) has great potential compared to other materials due to its excellent chemical resistance, which makes it suitable for use in aggressive environments. Moreover, PFA exhibits a higher resistance to partial discharges compared to common materials such as PEEK or PAI. Partial discharge is the main cause of wire insulation failure, which leads to the failure of the entire electric motor. Resistance to partial discharges is a crucial parameter to consider when designing high-voltage motors. Thus, PFA-coated wires have the potential to become a universal stator winding base for high-performance electric motors. However, the widespread use of PFA in magnet wire manufacture is limited by the difficulty of applying it to the wire due to its extremely poor adhesion to the copper surface. In order to overcome this challenge, Tre Tau Engineering developed the patented "DryCycle® technology" (patent EP 3518255B1), which allows most extrusion polymer grades to be applied to wires without the use of solvents, primers, or other copper processing. The DryCycle® process requires minimal polymer application and offers fast application times, making it both economical and environmentally friendly. This article presents the main properties of the resulting PFA wire, thus showing the wide range of possibilities and advantages of using this polymer in electric motor stators. The PFA coating was applied using the commercially available polymer Daikin AP-201. The tests were conducted in accordance with international standards IEC 60851-3, IEC 60851-5, and IEC 61934. In order to fully characterize all the properties of the wire, standard tests for magnetic wire were selected: adhesion, elongation, springback, BDV and PDIV tests. One of the non-standard test methods we used was to make hairpins and compare their electrical properties with those of the unformed samples. These characteristics were chosen to provide a comprehensive evaluation of the properties of the wire. + Adhesion: the ability of the wire to bend and stretch is a function of this factor. This is the major weakness of most fluoropolymer coatings. Tre Tau Engineering has been able to achieve strong adhesion without the need for additional primers or other fixing compounds. + Elongation: this is a measure of the tensile strength and yield strength of the wire and the resistance of the insulation to this kind of stretching. + Springback: an important parameter to create hairpins, it indicates the deflection of the wire when it is bent. + BDV and PDIV: crucial parameters to determine the electrical properties of a wire. BDV indicates the maximum discharge that the wire can withstand, PDIV indicates the inception voltage of partial discharge. Another important parameter in this study is RPDIV (initial voltage of repeated partial discharge). PDIV and RPDIV can be used to simulate the actual operation of the electric motor by predicting the possible moment of stator failure. PFA MAGN E W About Tau Tau is a technology company at the core of energy transition, decarbonization of energy and electrification of transport. Its patented technologies reconcile the necessity of sustainable, resource-minimizing manufacturing with the power, reliability and performance that electrification requires to enable smaller, greener, longer-lasting and more powerful motors, transformers and generators. Tau focuses on carbon-conscious protective coatings for high-performance and standard copper, aluminium and steel wires. Visit www.tau.group or follow Tau on Twitter and LinkedIn

  • Tau Group concludes €9m series-B round to scale up production for e-mobility

    The round, led by Solvay Ventures, is joined by existing investors including Finindus and happens in parallel with Tau Group’s commercial breakthrough with automotive customers Turin, Berlin, 1 February 2023 – Technology company Tau has concluded a series-B round raising €9 million with Solvay Ventures as a lead investor. Solvay Ventures is joined by existing shareholders including Finindus, a Belgium-based joint venture of ArcelorMittal and the Flemish Region, as well as management and private individuals. Tau has established itself as an innovative supplier to the automotive industry by setting a new global standard in winding wire for e-mobility. Its wire addresses the industry’s demand for the next generation of electric motors with a reduced carbon footprint, using less resources and improving the electric vehicles’ efficiency, range and recharge time, notably through superior resistance to partial discharge and accommodating voltages of 800V and higher. Recently, Tau reached an important commercial milestone when its wire products completed diligent validation processes of several automotive OEM and Tier 1 suppliers in Europe, Asia and North America. The company is currently ramping up capacity, providing early adopters with immediate competitive advantages, and is preparing industrial scale carbon-neutral winding wire production in Italy with the goal to start worldwide deliveries by 2024. “Through the use of specialty polymers, Tau’s innovative technology enables higher performance electric motors, key to the accelerating adoption of electric vehicles”, says Peter Vanlaeke, Partner at Solvay Ventures. “We are delighted to add Solvay Ventures as one of our key investors as we move into this new phase for our business. Strengthening the ties between the different parts of the value chain is critical to help accelerate solutions like Tau’s winding wire and the impact it will have on the energy transition”, says Francesco Taiariol, CEO and co-founder of Tau. “Since our initial investment mid 2021 we have seen excellent progress of this leading-edge technology towards full scale industrial manufacturing and market acceptance by world renowned automotive players. We are thrilled to have Solvay Ventures on board - adding more insights - to strengthen our network and to complement the existing core investors”, says Hans Maenhout, investment director of Finindus. About Tau Group Tau is a technology company at the core of energy transition, decarbonization of energy and electrification of transport. Its patented technologies reconcile the necessity of sustainable, resource-minimizing manufacturing with the power, reliability and performance that electrification requires to enable smaller, greener, longer-lasting and more powerful motors, transformers and generators. Tau focuses on carbon-conscious protective coatings for high-performance and standard copper, aluminium and steel wires. Visit www.tau.group or follow Tau on Twitter and LinkedIn About Solvay Ventures Solvay Ventures is the Venture Capital fund of Solvay. Solvay Ventures invests in breakthrough technologies in advanced materials, devices and business model innovation. Operating since 2005, Solvay Ventures is currently investing out of a €80 million global evergreen fund. Solvay Ventures targets early stage investment opportunities (Seed through Series B) with a focus on startups addressing better use of resources, energy transition, increased well-being, and digital age. Beyond capital, Solvay Ventures looks to leverage the resources at Solvay to help accelerate technology and market adoption. Visit www.solvay.com/en/innovation/solvay-ventures or follow Solvay on LinkedIn About Finindus Finindus is a Belgium-based investment company funded by ArcelorMittal and the Flemish Region and is linked to OCAS, a world class metal research centre with campuses in Zelzate and Zwijnaarde (Belgium). Finindus provides early stage and growth financing (both equity and debt) to innovative technology companies active in the field of materials (including material processing), sustainable manufacturing and industry 4.0. Finindus invests across Europe, with Flanders as a home base and sweet spot, and across the globe for investment opportunities in technologies at the centre of our core domains and in line with the strategic interests and areas of expertise of our shareholders. Visit www.finindus.be or follow Finindus on LinkedIn

  • Tau brings the new electric motor technology to life

    Tau paves the way for transport electrification at Coiltech Italia 2022, the international coil winding exhibition, held in Pordenone on September 28-29. Electric car manufacturers are racing to launch more advanced models at a rapid rate. Most importantly, industry experts are mastering innovative winding technologies for high voltage motors featuring high-power density. This helps to improve the electric vehicles’ efficiency, range and reduce recharge time. After successfully passing laboratory testing, Tau has now unveiled a new hairpin stator prototype for automotive e-traction developed in partnership with Additive Drives, a manufacturer of state-of-the-art e-motor components for mobility, automotive, industrial and racing sectors. One of the highlights of Tau winding wire is that it has all the characteristics that future mobility requires. Its partial discharge resistance and voltage resistance are 60% higher than that of competing products. In comparison to modern conductor solutions, the Tau wire delivers a higher power output and is suitable for applications above 800 volts. “We are proud to be partnering with Additive Drives to deliver our shared vision of the next level electric motor technology. At the current stage of pre-production development, we have a rare opportunity to shape decisions on product design and material sourcing based on our product performance. This milestone is of the utmost importance for Tau, now and in the future, as we want our magnet wire to play a key role in the energy transition”, said Filippo Veglia, co-founder and CSO of Tau. Tau’s magnet wire characteristics - electrical, mechanical and chemical - have been tested by FAPS and PEM Institutes in laboratory settings. Having successfully passed all tests, Tau further partnered with Additive Drives and built the first stator with Tau wire. This confirmed that Tau wire can be processed and allows for a smaller bending radius of the wire in the stator, lower friction, and a higher electrical fill factor. By rethinking traditional coating methods, Tau is leveraging the benefits that “from scratch” approach gives to put in place more sustainable practices. The DryCycle® solvent-free coating process significantly reduces any negative impact on the environment owing to the use of solid-state dry varnishes preventing VOC emissions. "We use only the materials we need and no more. Our one-layer insulation has already demonstrated very good mechanical robustness and superior dielectric strength, so we don't need to apply more polymer to obtain better results, which reduces not only the manufacturing cost but also carbon footprint. And we want to do much more than that. Our DryCycle coating is the only technology that allows 100% copper and thermoplastic polymer recycling - thus making our high-performance wire more environmentally friendly," added Veglia. The company will continue its partnership with Additive Drives to deliver an end-to-end e-motor solution that weighs less, consumes less energy and resources, and achieves the absolute maximum power density and range, Veglia said. To see the very latest technologies designed for the winding industry, visit Coiltech Deutschland 2023 in Ulm on March 29-30, where Tau will be exhibiting at Booth 7-D09. About Tau Tau is a technology company at the core of the electrification of transport and the decarbonization of energy. Its patented technologies reconcile the necessity of sustainable manufacturing with the power, reliability and performance that electrification requires to enable smaller, greener and more powerful motors, transformers and generators. Tau focuses on carbon-conscious protective coatings for high-performance and standard copper, aluminium and steel wires. Visit www.tau.group or follow Tau on Twitter and LinkedIn. About Coiltech Coiltech Italia is an annual international exhibition for the coil and winding industry that gives an excellent opportunity to keep up with the materials and methods innovation for further improvement of efficiency in production, distribution, transformation, and consumption of electrical energy. For more information visit https://www.quickfairs.net.

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