Learning Forum

[Sebastian.Xie]

Hi experts,

below is a plannar transformer, I would like to know the capacitance C1、C2.

I have heard that the Transient A-Phi Formulation might help me achieve my goals, but I have no concept of what the Transient A-Phi Formulation is. Are there any examples or video tutorials that I can refer to?

[GLUO]

Hello,

 

Inter-turn capacitance can be calculated using electrostatic solver. It is recommended to use a separated turn model, and assign voltage to each turn to represent the voltage distribution. For example, a 300-turn coil, for each turn, the voltage is different. Assuming we are applying total 1 V voltage on the two coil terminals, the voltage of each turn is

300 turns and 1V:      1V/300/2 for 1st turn
                                      1V/300*(1+1/2) for 2nd turn

                                      1V/300*(2+1/2) for 3rd turn ...

                                      1V/300*(300-1/2) for the last turn

This  represents the actual voltage distribution among the 300 turn, then we can solve it, and check the inter-turn capacitance in the matrix result.

 

GL