By Shinya Saeki – Hitachi Ltd and Hitachi Industrial Equipment Systems Co Ltd co-developed a permanent magnet synchronous motor with an efficiency of 93% without using a neodymium (Nd-Fe-B) magnet, which contains a rare-earth material.
With the new technologies, it is possible to realize an industrial motor whose performance is equivalent to that of a neodymium magnet-based motor at lower costs, the companies said. As one of the solutions to address the export restriction imposed by China, which accounts for 90% of the rare-earth materials produced in the world. more> http://goo.gl/im6E1q
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