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The electric vehicle industry is shifting towards magnetless motor technologies due to rising costs and ethical concerns surrounding rare-earth materials. Types of magnetless motors, such as Induction Motors, Switched Reluctance Motors, and Synchronous Reluctance Motors, are being developed to provide sustainable alternatives. This transition presents both challenges in achieving efficiency comparable to traditional motors and opportunities for innovation in motor design and integration.

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9 views2 pages

1 Executive Summary

The electric vehicle industry is shifting towards magnetless motor technologies due to rising costs and ethical concerns surrounding rare-earth materials. Types of magnetless motors, such as Induction Motors, Switched Reluctance Motors, and Synchronous Reluctance Motors, are being developed to provide sustainable alternatives. This transition presents both challenges in achieving efficiency comparable to traditional motors and opportunities for innovation in motor design and integration.

Uploaded by

manasrinu
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Executive Summary on Magnetless Motors in EV Industry

Overview
The global electric vehicle (EV) industry is undergoing a significant transformation
due to technological innovation, increasing environmental awareness, and shifting
regulatory landscapes. A key component of this evolution is the electric motor.
Traditionally, Permanent Magnet Synchronous Motors (PMSMs) using rare-earth
magnets such as neodymium and dysprosium have dominated the EV space due to
their high power density and efficiency. However, global supply chain disruptions,
price volatility, and ethical sourcing concerns surrounding rare-earth elements have
motivated the industry to explore magnetless motor technologies.

Market Drivers
The rising costs of rare-earth materials, coupled with increasing geopolitical risks—
primarily due to the dominance of a few countries in rare-earth mining—have
created a strategic push toward sustainable alternatives. Automakers are seeking
locally sourced materials, which directly impacts the design choices for motor
technologies. The shift aligns with the growing global emphasis on reducing
environmental impact, as rare-earth mining processes are often environmentally
damaging.

Types of Magnetless Motors


Magnetless motors, including Induction Motors (IM), Switched Reluctance Motors
(SRM), and Synchronous Reluctance Motors (SynRM), are showing promising
developments. These motors do not require permanent magnets and can be
designed using standard-grade electrical steels and copper. Induction motors have
been in use for over a century and were famously adopted by Tesla in early EVs.
SRMs are known for their simple, robust construction and excellent high-speed
performance, although their control is more complex. SynRMs offer high efficiency,
especially when assisted by ferrite magnets (FASynRM), providing a middle ground
between cost and performance.

Challenges and Opportunities


One of the challenges with magnetless motors is achieving comparable torque
density and efficiency to rare-earth PMSMs. This requires advanced control
techniques and improvements in material science and motor topology. However,
ongoing research and increased interest are closing this gap rapidly. Opportunities
also exist in integrating these motors with novel cooling systems and drive inverters
optimized for variable load conditions.
Conclusion
The transition to magnetless motors is not just a technical shift but a strategic
industry realignment. Companies investing in this technology stand to gain long-
term cost savings, supply chain resilience, and alignment with global sustainability
goals. As research continues and regulations evolve, magnetless motors are poised
to play a major role in the future of electric mobility.

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