电磁力的作用和电磁转矩的产生

The Action of Electromagnetic Force and the Generation of Electromagnetic Torque

旋转电机中电磁转矩的产生 ,可以从作用在磁场内磁性物质单位体积上的电磁力出发加以说明。考虑到电机转子的实际结构 ,电磁力除作用在转子绕组上之外 ,更主要的是作用在转子铁心的表面和内部。为此 ,对常见结构形式的转子上电磁转矩的产生原理给出了定性、直观的说明。

In rotating machines,the cause of the electromagnetic torque is the electromagnetic force acting on differential volume of the ferromagnetic material in magnetic field.Owing to the practical construction of rotors,the electromagnetic force acts not only on the rotor winding but also on the rotor ferrite core.This paper gives brief qualitative presentation of the principle of generation of the electromagnetic torque on ordinary rotors.