Hi everyone, In my thesis Chapter 4, I proposed a method to estimate DC‑link capacitance (C) using only the n…

By Md Sayem

Hi everyone,

In my thesis Chapter 4, I proposed a method to estimate DC‑link capacitance (C) using only the natural voltage transient during load unloading. The approach uses a simple second‑order equivalent circuit, fits the decaying trajectory with PSO, and calculates C from the damping coefficient α. It requires no current sensors or signal injection – fully non‑invasive.

Current result: Error within 5% (experimental) on a Boost converter.

Here i used APSO for detection C and i want to use also WT for ESR, then need to change few part in Model and output figures.

If you are expert about power electronics converter reliability research then contract with me. Thank you.

If anyone interested then i can share with him in details information.