What is the DC magnetization phenomenon of transformer

    There is a term in transformers called the DC magnetization phenomenon of transformers. This phenomenon has a significant impact on transformers. DC magnetization phenomenon: When there is a DC component in the secondary winding of the rectifier transformer, the DC component flows through the secondary winding and the iron core is excited. This is the DC magnetization phenomenon. This phenomenon often occurs in a half-wave rectifier circuit. Its harm is that it is easy to saturate the iron core and increase the loss. So if you want to see the loss of the transformer, you can directly see how the DC magnetization phenomenon of the transformer is. A lot of procedures can be saved in the middle. The DC magnetization of the transformer is also classified.
    DC magnetization is divided into DC pulsating current magnetization method and DC constant current magnetization method. The former is simpler than the latter in electrical implementation. It is generally used for the magnetization of components in the residual magnetic field detection method. In active magnetic field detection, this magnetization will generate a strong AC magnetic field signal in the detection signal, increase the complexity of the detection signal processing, and reduce the signal-to-noise ratio of the detection signal. The DC constant current magnetization method has high requirements for the current source, and the excitation current is generally several amperes or even hundreds of amperes. Like the AC magnetization method, the DC magnetization method can easily adjust the magnetization intensity by controlling the current, but with the increase of continuous use time, the heating of the electromagnet is difficult to avoid.