How to Calculate Transformer Rc and Xm Values: Formulas and Explanation

Hi guys, these days ı am designing a transformer . I am curious that  calculating transformer  xm and rc .How do ı calculate them????  what have they formulas? thanks

rc is core loss, which means you have to know about the core material  and the associated operating parameters, xm is the primary winding inductance, which is related to the frequency, voltage,  and some core parameters. See this simple reference, and this reference 1 Some assumptions are normally made in design for mains transformers, since the core materials have not changed much in recent years but high frequency applications usually require the full data sheets for the core material, as there are many formulations.Transformer design is a specialized topic, particularly when used in switching applications, so you need to give many more details on exactly what you are trying to achieve, is it a mains transformer, isolation, audio, Switch Mode Power Supply, etc., they all have very specific requirements. Also you need to specify the voltages and power you are designing for as a starting point,
cheers,Richard

RC and XM are the most important parts of a transformer. They represent the excitation circuit of the transformer, that is, the circuit that produces the main flux. Considering the formula of Faraday's electromagnetic induction, since the magnetic flux is proportional to the current (assuming that it operates in the unsaturated region of the core), it can be seen that the induced electromotive force is also proportional to the current and leads the current by a phase angle of 90°. (Differentiation is equivalent to turning the phasor counterclockwise by 90° on the phasor diagram, which is 90° ahead) so it can be represented by the series inductance XM.