What kind of motor is an electric motor?
Due to the use of a large number of materials of rare earth permanent magnet motor, so the cost is relatively expensive (in the course of the performance of permanent magnet motor, especially good) in China as the main export country (rare earth rare earth has proven more than 80% mineral resources are concentrated in Inner Mongolia and Baiyunebo) in recent years has increased the limit of rare earth materials the price is higher and higher, and the electric car manufacturers therefore tend to use AC induction motor (induction motor), advantage is cheap, disadvantage is the relatively low performance
Commonly used motors are generally permanent magnet motor and induction motor two major categoriesPermanent magnet motor is a brushless DC motor (called DC motors, but the actual work of He Yongci is very close to the synchronous motor, but is driven by square wave instead of a sine wave) He Yongci two low speed synchronous motor, electric bicycle and motorcycle are brushless DC motor for electric vehicles, but usually with permanent magnet synchronous motor (electric vehicle Chinese, and common in Japan before.)
In addition, the switched reluctance motor also has great potential as an electric vehicle power, because the switched reluctance motor is lower cost, more reliable structure, and has a very good speed control ability. On the other hand, the efficiency and power density of switched reluctance motor is no worse than that of induction motor (of course, there is still no He Yongci motor ratio), and torque ripple and noise are also the weakness of switched reluctance motor
