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KPE - www.kaizerpowerelectronics.dk (see latest post for new videoes)

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madsbarnkob:
How far can we push a 3 phase 415 VAC rated power factor correction capacitor? The answer is: 1250 VDC far! We can push it pretty far and get some literally mind blowing results. I put together a capacitor bank of 20 capacitors, weighing 25 kg, a behemoth. Metallized Polypropylene Capacitors, the MKP type, is notorious for high voltage handling, self-healing when abused and very high dI/dt pulse currents due to low ESR.

madsbarnkob:
A teardown of a desktop UPS, the APC Smart-UPS 1500, a run down of the controller and power electronics of the system.

madsbarnkob:
A teardown of a 6 kW solar inverter, the Fronius IG Plus 2LT-2. Two phased system split into two inverter boards, based on TO-247 devices in the power electronics section.

All pictures at: https://kaizerpowerelectronics.dk/teardown/fronius-ig-plus-2lt-2-6-kw-solar-inverter-teardown-and-analysis/

madsbarnkob:
A teardown of a huge (2 full size 19" racks) UPS systems power electronics, the APC SmartUPS VT 40kVA, a run down of the controller and power electronics of the system.

madsbarnkob:
Imagine yourself at a point opposite of the light source, and it would look like the "shadow" of a black hole.

I filmed a water whirlpool in my garden fire pit. The sun was almost right above me, making the whirlpool cast a shadow. Despite similarities between whirlpools and black holes are generally disproven, and that they are very distinctive phenomena, this video kept bugging me for 3 years and now I'm releasing it for all you, to give your thoughts :)

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