Precessing magnetic jet engine model reveals power source of rare 'heartbeat' gamma-ray burst

Prof. An Tao from the Shanghai Astronomical Observatory (SHAO) of the Chinese Academy of Sciences has proposed a novel ...
Electrek

This bike has 2 huge batteries, 2 big motors and might be perfect for the snow

At $1400, the Enffe EAES-2D Ultra takes the very common 20-inch fat tire ebike and throws a ton of extras onto the platform.
IEEE

Interior Permanent Magnet Motor With Novel Opposing Unequal Magnetic Poles for Torque Ripple and Electromagnetic Vibration Suppression

Abstract: Interior permanent magnet (PM) motors have been widely used in traction systems because of their advantages of high efficiency, compactness, and high power density. However, due to the ...
IEEE

Impact of Rotor Excitation Current During Flux-Weakening Control of Hybrid-Excited Permanent Magnet Synchronous Motor

Abstract: Hybrid-excited permanent magnet synchronous motors are particularly suitable for operating in the constant power region, thanks to the possibility to reduce the rotor flux when the speed ...

Donut Lab’s hub motor meets WATT’s battery to create new EV skateboard

WATT had previously developed the Passenger and Commercial EV Skateboard (PACES), a lightweight aluminum platform for ...
Amazon S3 on MSN

4 easy magnet motors you can build at home today

The science pros at TKOR demonstrate 4 easy magnet motors you can build at home today. US Mint unveils new coins for ...