What are the common types of coils
Information from:internet Published on:2022-03-02
What are the common types of coils? Let's briefly understand: 1. Single layer coil The single-layer coil is wound on the paper barrel or bakelite frame with insulated wires one by one. Medium wave antenna coil, such as transistor. Single layer winding is a winding with only one coil useful side embedded in each stator slot, so its total number of coils is only half of the total number of slots of the motor. The advantage of single-layer winding is that the number of winding coils is small and the process control is simple; There is no interlayer insulation, and the fraud rate of the slot increases; Single layer structure will not have interphase breakdown barrier, etc. The disadvantage is that the electromagnetic waveform generated by the winding can not be dreamed, the iron loss and noise of the motor are large, and the starting function is also slightly poor, so the single-layer winding is usually only used in small capacity asynchronous motors. 2. Honeycomb type If the plane of the wound coil is not parallel to the rotating surface, but intersects into a certain angle, this kind of coil is called honeycomb coil. The number of times the wire bends back and forth when it rotates for one cycle is often called the number of turns. The advantages of honeycomb winding method are small volume, small dispersed capacitance and large inductance. Honeycomb coils are wound by swindling the honeycomb winding machine. The more folding points, the smaller the dispersion capacitance. The honeycomb coil has small volume, small buried capacitance, large inductance and high Q value. Therefore, many radio tuning coils, oscillation coils and high-frequency choke coils are wound in this way, and the effect is better than other methods. In the workshop, this kind of coil is usually wound with a honeycomb car.
