![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1322550/image.png)
Synchronous Machine Salient Pole Edf_base
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What are the equations to calculate Efd_base and Ifd_base of non-reciprocal p.u system in Synchronous Machine Salient Pole model / Electrical/ Simscape?
I don't understand where the value of Efd_base comes from according to the model
Field circuit base values, Efd, Ifd (exciter model, non-reciprocal pu system):
v = 73.1018 : V % Instantaneous voltage
i = 1000 : A % Instantaneous current
Best regard
Miguel Montilla
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Balavignesh
2023년 3월 13일
Hi Miguel,
As per my understanding, you want to know what are the equations that are used to calculate base values of field voltage ‘efd’ and currents flowing in the field circuit ‘ifd’.
As per the documentation of Synchronous Machine Salient Pole Block, the following equation is used to calculate field voltage ‘efd’.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1322550/image.png)
Currents flowing in the field circuit ‘ifd’ must be set in the block parameters. It will be set as 1000 A by default.
I hope this helps resolve the issue you are facing.
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Balavignesh
2023년 3월 16일
Hi Miguel Montilla,
As per my understanding, you mean standard per unit-parameters as standard parameter.
As per the documentation of Synchronous Machine Salient Pole Block, the Park transformation is used to define the per-unit synchronous machine equations.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1326085/image.png)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1326090/image.png)
I hope this answers your queries.
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