A patent for electric and hybrid EV motor design using non-rare earth magnets, will limit exposure to price fluctuations of rare earth magnets which are used in the majority of hybrid and pure electric vehicles produced today.
The patent covers the unique magnet geometry and the method of manufacturing the motor developed by UQM Technologies, a developer and manufacturer of power-dense, high-efficiency electric motors, generators and power electronic controllers for the commercial truck, bus, automotive, marine, military and industrial markets.
This new design provides a similar level of performance to UQM's current design, and once the development is completed will allow UQM the flexibility to choose between these systems depending on projected magnet costs into the future.
"The patented technology that we've developed provides a viable option to existing rare-earth motor technology, limiting exposure for us and our customers to the price and political volatilities of rare-earth magnets," said Eric R. Ridenour, President and Chief Executive Officer of UQM Technologies, Inc. "We are now in the prototype stage and the first samples are meeting our objectives, providing us with the validation to move into the next phase of development."
Implementation of the technology is part of a $4M Department of Energy (DOE) Advanced Research and Development Grant previously awarded to UQM for the development of non-rare earth magnet electric motors for use in electric and hybrid electric vehicles.
Source and top image: UQM Technologies