1 year ago
Companies Develop Rare Earth Magnet Alternatives Amid Crisis
Some companies are making new types of motors without using special magnets called rare earths.
These magnets are important for many things like cars and phones.
China controls much of the supply of these magnets, which has caused problems.
Companies like Chara Technologies, Conifer, and Viridian Ingni Propulsion are making motors using different materials or designs.
These new motors use things like ferrite magnets or no magnets at all.
These alternatives could make it easier to get the parts needed, and some are cheaper and better for the environment.
India, with its growing electric vehicle market, is a good place to try out these new ideas.
China's rare earth export restrictions have caused supply chain issues in automotive, defense, and consumer electronics.
Several companies are developing rare earth magnet alternatives, such as ferrite-based and magnet-free motors.
Chara Technologies uses synchronous reluctance machines (SynRMs) without rare-earth elements.
Conifer uses ferrite axial flux modular motors, which boost EV efficiency and reduce weight.
Viridian Ingni Propulsion is taking a hybrid approach, combining reluctance-based torque with ferrite magnet assistance.
- Who
- Chara Technologies, Conifer, Viridian Ingni Propulsion, and other motor makers.
- What
- Companies are developing alternatives to rare earth magnets in motors.
- Where
- India, the US, and China
- When
- The development is happening now due to supply chain issues.
- Why
- To reduce reliance on China's rare earth exports, which caused supply chain disruptions.
Rare-Earth Dependent Motors
Rare-Earth Free Motors
Reliance
Rare-Earth Dependent Motors
Requires rare earth magnets.
Rare-Earth Free Motors
Uses rare-earth free motors
Efficiency
Rare-Earth Dependent Motors
Permanent magnet synchronous motors (PMSMs) provide high torque density and energy efficiency
Rare-Earth Free Motors
Alternative motor designs are closing the efficiency gap
Key facts
- Chara Technologies
- Uses synchronous reluctance machines (SynRMs) - rare-earth free
- Conifer
- Uses ferrite axial flux modular motors; reduces EV weight by 50% in industrial applications
- Viridian Ingni Propulsion
- Uses a hybrid approach with reluctance-based torque and ferrite magnet assistance
- Neodymium Magnet Cost
- Around Rs 5,000 per kg
- Ferrite Magnet Cost
- Around Rs 600 per kg
