Hello:
I tried to study DAB converter by checking dual_active_bridge_converter thermal model in PLECS, there’s one thing confused me that the discrete transfer function in phase shift controller block, how do we decide the numerator coefficients and denominator coefficients? thank you.
The coefficients for this model were taken from the reference included in the demo model documentation. The reference does not include a detailed step-by-step design of how these coefficients were determined.
Once you have chosen a design methodology, you can use PLECS small signal analysis tools to confirm your controller design meets your design criteria.
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