How can I simulate an OLTC transformer with tap settings on the secondary side in Simscape?

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Jagadeesh
Jagadeesh 2025-9-15
回答： Sabin 2025-11-24，16:29

I need to model an on-load tap changing (OLTC) transformer where the tap changer is connected on the secondary winding. I found the Three-Phase Tap-Changing Transformer (Two Windings) block in the Specialized Power Systems library: https://in.mathworks.com/help/sps/powersys/ref/threephasetapchangingtransformertwowindings.html

However, this block only supports tap changing on the primary side.

👉 Is there a block that allows secondary-side tap changing directly? 👉 If not, what’s the recommended workaround to achieve the same behavior?

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Sabin
Sabin 2025-11-24，16:29
In Simscape Electrical there is a single-phase tap-changing transformer that allows setting the tap-changer winding to either primary or secondary. It may be possible to use this block to obtain a basic three-phase implementation. Alternatively, Simscape language can be used for a custom implementation. Check this page for a selection of custom components:
https://www.mathworks.com/help/sps/custom-components.html

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