Guru
Joined: 17/10/2017
Location: BelgiumPosts: 462
| Posted: 02:33pm 17 Feb 2020 |
Again thanks for all the comments!
I was running out of time, the current inductor allmost lost all his smoke.
But I was just in time to notice, there was a little bit to much power consumption, the induction stove, oven, microwave...
So had to speed up things and mount a more robust inductor. I just went for it and had the spare mosfets closeby ( fortunate not needed
)So I had to put in about 36mm airgap (2*18mm, it's more like an aircoil :) ) to get my 50µH, it's functioning about 2 weeks now. Fingers crossed it holds, sinewave does not change a lot under load. Now it's 30mm² instead of 10mm² should run a lot cooler with heavy loads.
It will be temporary, It dropped to my mind the pla from the coilformer is only rated for about 50°C, that is to little.
I must make a new coilformer with abs. The new coilformer will hold 6halves and will be suited for the whole powerrange this inverter can take. The airgap will be a lot smaller so should keep surprises away.
This inductor will move to a spare inverter or other project.
Sorry forgot to take a picture before mounting it in.
Edited 2020-02-18 00:44 by nickskethisniks