视频如下：
INVENTOR BUILDS Breakthrough MOTOR – IS it REAL!? – YouTube
Focused Energy has designed a halbach array coiled motor. It potentially be could one of the lightest, more powerful electric motors. But taking it one step further, can we actually build a magnet free motor? Sources & Credits: 
• Focused Magnetics (Pure Halbach Array… • 3d-printed Halbach Motor – Building I… • What is a SYNCHRONOUS MOTOR and how d… • Why is electric motor efficiency so i… • 【TOSHIBA】Superconducting Motor Techno… • Magnet Free Motor By Mahle | Magnet F… • EVSys800 – a remarkably compact, mod…
