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Electronics

Electronics

Topics related to HFSS, Maxwell, SIwave, Icepak, Electronics Enterprise and more.

How do I get the lumped parasitic self-capacitance of a multi-turn inductor

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    • coleen.dizon
      Subscriber

      So I tried doing it in Maxwell Electrostatics, where I excited each individual turn a corresponding voltage, by extracting the capacitance matrix. However, the capacitance matrix shows turn-to-turn capacitance. I want to get the lump value so that I can represent it in a cicuit, like below. How do I achieve this?

    • GLUO
      Ansys Employee

      Hi,

      Please simulate one coil at a time. For example, if your excitation is 1V, for each turn/layer, please assign

       voltage for each turn/layer as

                                             1V/N/2 for 1st layer

                                            1V/N*(1+1/2) for 2nd layer

      .

      .

      .

                                            1V/N*(N-1/2) for last layer

      After that, please find the total energy in the convergence page, and use W=1/2*C*U^2 to calculate the lump C.

      GL

    • coleen.dizon
      Subscriber

      Hi GL,

      Thanks for the reply.

      I understand that much. But I want to get the Cp, Cs, Cwa and, Cwb. If I do that, I will only get 1 lumped capacitance.

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