#105🚀 Parasitic Capacitance in the Core - Decision making
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What is your decision?
In recent years, I have been learning many things, some are very technical, others more social, but what remains a big filter between people who are successful in a project and those who are not, is the decisions they make today.
Every day, we are building part of the story and the rest of the world is doing the same. Your colleague might be having a bad day today and speak to you rudely, and that could be the start of a bad relationship with your job, which in turn, leads you to another job where you meet your future wife. But for that to happen, you have had to make decisions within yourself, quickly and then rationalize them. You probably remember the book "Thinking, Fast and Slow" by Daniel Kahneman.
I have been thinking about the decisions I have made in these last years and which ones seem like good decisions and which ones bad.
The bad ones are usually hidden behind great learning afterwards, so now they are wisdom. But most were rational decisions. No one criticized me for them.
However, many people looked at me strangely with some of the good ones, mainly those that seemed to be made quickly. And the truth is, the body is wise and when you make a decision and the body tells me, I'm comfortable with it, it means that it is the decision that my mind and body assume as their own, with its consequences.
However, when my body says no, even if my mind rationalizes it, my wise body, 37 years old, working with my father since I was 16 and as an engineer since I was 21, with all the learning tells me, Chema, I don't see this. And I might be wrong, and my body will memorize that pain and with human intelligence, will change position next time.
I love thinking about decisions, especially because I accepted the mistakes I make a long time ago and because being honest, everything always ends up coming my way.
Effects of Airgaps on Parasitic Capacitance of Magnetic Components
Today I bring you a summary of an article that I have loved, about the parasitic capacitance that exists between different points of a core. I still need to understand how these capacitances can impact impedance and therefore in the design phase. We will have to experiment. I have created this card of the article
Title: Effects of Airgaps on Parasitic Capacitance of Magnetic Components
Authors: Shaokang Luan, Zhixing Yan, and Hongbo Zhao
Aalborg University, Denmark
Main Topic: Parasitic capacitances in magnetic cores
Main Contribution: Modeling of a magnetic core in sections, demonstrating that there is a potential difference between the different sections, especially if there is a gap. This occurs when there is no shielding layer that short-circuits all parts of the cores.
Demonstration: Yes.With FEM simulations and a prototype. The picture below, shows the dV between different core sections depending on the GAP.
Application: Part of this capacitance appears in the GAP. It's not clear to me whether this capacitance affects the impedance of the component from the circuit's perspective or only from the perspective of isolating the core from the rest of the circuit; more research in my Lab will be needed.
I hope you enjoyed it. Thank you for reading.
Share with your friends will help me a lot 😊.
Reference
[1] S. Luan, Z. Yan and H. Zhao, "Effects of Airgaps on Parasitic Capacitance of Magnetic Components," in IEEE Transactions on Power Electronics, vol. 39, no. 1, pp. 1115-1134, Jan. 2024, doi: 10.1109/TPEL.2023.3321477.