A linear motor coil is a component that converts electrical energy into magnetic energy and stores it. The structure of a linear motor coil is similar to a transformer, but with only one winding. The linear motor coil has a certain amount of inductance, and it only resists changes in current. If the inductance is at no current The state of flow through, when the circuit is turned on, it will try to prevent the flow of current; ifLinear Motor CoilIn a state where current is flowing, it tries to hold current when the circuit is turned off. Inductors are also known as chokes, chokes and dynamic chokes.
The principle of the linear motor coil is that when the current passes through the coil wire, a certain electromagnetic field will be generated around the coil wire, and the wire of the electromagnetic field will induce the wire within the range of the electromagnetic field. The effect of the electromagnetic field on the wire itself is called "self-inductance", that is, The changing current produced by the wire itself produces a changing magnetic field, and this magnetic field further affects the current in the wire; the effect on other wires within this electromagnetic field.
The linear induction motor is evolved from the rotary motor. When the 3-phase winding on the primary side is fed with a symmetrical sinusoidal alternating current, an air-gap magnetic field will be generated. When the longitudinal edge effect caused by the disconnection of the two ends of the iron core is not considered, The distribution of this air-gap magnetic field is similar to that of a rotating motor, which is sinusoidally distributed along a straight line. However, it does not rotate but translates along a straight line, which is called a traveling wave magnetic field. Obviously, the moving speed of the traveling wave magnetic field is related to the rotating magnetic field in the stator. The linear velocity on the inner surface is the same, and the speed at which the traveling wave magnetic field moves is called the synchronous velocity.
The linear motor coil has strong magnetic field and good magnetic performance, and the bearing speed can be increased by 20%. The strong attraction force of the linear motor coil reduces bearing wear. The magnetic force of the linear motor coil transmits the magnetic field through the phase difference between the motor bearing and the pressure motor bearing. This magnetic field It can be used as the preload of the air bearing system in advance, so that high precision can be used for high-frequency magnets. Of course, since the linear motor coil is a very complex and important part of the steel structure, it is difficult to handle and easy to operate, so there must be better stability.