How does the magnetic ring common mode inductor improve the withstand voltage performance of the inductor -

What should I do if the withstand voltage fails when using a magnetic ring common mode inductor? For this problem, our company provides three methods for improving the withstand voltage of common mode inductors in terms of winding and material selection. the

1. Replace the winding method of the common mode inductor. There are usually two winding methods for the common mode inductor of the magnetic ring. The first is double-wire parallel winding, and the second is double-wire pair winding. 1. The double-wire parallel winding method requires the use of insulated wires and enameled wires to be wound together. After successful winding, the shape of the magnetic ring common mode inductor is somewhat similar to that of the magnetic ring differential mode inductor. The finished product of the double-wire parallel-wound common-mode inductor is shown in the figure: The double-wire parallel-wound common-mode inductor is suitable for low-voltage and high-current circuits, and the double-wire parallel-wound common-mode inductor cannot improve the withstand voltage of the inductor. performance. 2. Two-wire split winding method. the

You need to use two sets of enameled wires, or you can use one set of enameled wires and one set of three-layer insulated wires. The two windings are wound separately, and each set of windings is wound along one side of the magnetic core. The two-wire split-wound common-mode inductor is shown in the figure: Using the double-wire split-winding method to wind the magnetic ring common-mode inductor can greatly improve the withstand voltage performance of the common-mode inductor. 2. Replacing the winding of the common mode inductor Different windings are used for the common mode inductor of the magnetic ring, which will have different effects on the withstand voltage of the common mode inductor of the magnetic ring. When the magnetic ring common mode inductor uses two sets of enameled wires, the thicker the wire diameter, the better the voltage resistance effect. Magnetic ring common mode inductors use a set of enameled wires, and a set of three-layer insulated wires has better withstand voltage effect than the common mode inductors wound by two sets of enameled wires with the same wire winding method and the same wire diameter. the

3. Common mode inductance adding partitions The method of adding partitions to common mode inductors is only applicable to double-wire split winding. The common mode inductor can get a better effect of increasing the withstand voltage by adding a separator in the middle of the magnetic ring. Normally, the withstand voltage performance of common mode inductors with separators is twice as high as that without them.