The ac induction motor suppliers tells you the difference from a rotating induction motor
There is no essential difference between a linear induction motor and a rotary induction motor in terms of working principle. It is only that the mechanical motion obtained is different. However, there are great differences in electromagnetic performance between the two, mainly in the following three aspects:
(1) The three-phase winding of the rotor induction motor is symmetrical. Therefore, if the applied three-phase voltage is symmetrical, the three-phase current is symmetric. However, the primary three-phase winding of a linear induction motor is asymmetrical in the position of the blank question. The coil at the edge is different from the coil at the middle question. The inductance value is very different. That is to say, the phase reactance is not equal. Therefore, even if the three-phase voltage is symmetrical, the three-phase winding current is also asymmetrical.
(2) The air gap of the rotor and rotor of the rotary induction motor is round, headless and tail, continuous. There is no starting end and terminal. However, the air gap between the primary and secondary of the linear induction motor exists at the beginning and end. When one end of the secondary enters or exits the air gap, additional currents are induced in the secondary conductor. This is the so-called "edge effect." Due to the edge effect, linear induction motors and rotary induction motors are quite different in operation characteristics.
(3) Since the initial and secondary questions of the linear induction motor continue to be of a certain length in the straight line direction, and the normal electromagnetic force is often uneven, Therefore, in the mechanical structure, the air gap between the primary and secondary is generally made longer. In this way, the power factor is lower than that of a rotating induction motor.
