A permanent Conveyor Chain magnet electric motor is a type of brushless electric electric motor that uses permanent magnets instead of winding in the field.

This type of motor is used in the Chevy Bolt[1], the Chevy Volt, and the Tesla Model 3.[2] Other Tesla versions use traditional induction motors motors.[3] Front motors in all-wheel drive Model 3 Teslas are also induction motors.

Permanent magnet motors are better than induction engine or motors with field windings for several high-efficiency applications such as for example electrical vehicles. Tesla’s Chief Electric motor Designer was quoted discussing these advantages, saying: “It’s popular that permanent magnet devices have the advantage of pre-excitation from the magnets, and therefore you have some efficiency advantage for that. Induction devices have perfect flux regulation and therefore you can improve your efficiency. Both make sense for variable-swiftness drive single-gear tranny as the drive models of the cars. So, as you know, our Model 3 has a permanent magnet machine now. This is because for the specification of the overall performance and efficiency, the long lasting magnet machine better solved our cost minimization function, and it was optimal for the number and performance target. Quantitatively, the difference is usually what drives the future of the device, and it’s a trade-off between motor cost, range and battery price that is identifying which technology will be used in the future.
The magnetic field for a synchronous machine may be provided by using long term magnets made of neodymium-boron-iron, samarium-cobalt, or ferrite on the rotor. In some motors, these magnets are installed with adhesive on the top of rotor core such that the magnetic field is usually radially directed across the air gap. In other styles, the magnets are inset in to the rotor core surface or inserted in slot machines just underneath the surface. Another type of permanent-magnet motor offers circumferentially directed magnets positioned in radial slots that provide magnetic flux to iron poles, which in turn set up a radial field in the atmosphere gap.

The primary application for permanent-magnet motors is in variable-speed drives where in fact the stator comes from a variable-frequency, variable-voltage, electronically managed source. Such drives can handle precise speed and placement control. Because of the absence of power losses in the rotor, as compared with induction electric motor drives, also, they are highly efficient.

Permanent-magnet motors can be made to operate at synchronous velocity from a way to obtain constant voltage and frequency. The magnets are embedded in the rotor iron, and a damper winding can be placed in slot machine games in the rotor surface to provide starting capability. Such a motor will not, however, have method of managing the stator power element.