MKP Power Film Capacitors plays a vital role in almost all power electronics applications. Either as filter, spike suppression or resonant energy storage. 3 years back I bought a large lot of MKP Power Film Capacitors. These will be used in a very large DRSSTC along with the IGBTs from day 3 video and film […]
MMC: So Many Large Power Film Capacitors – Isolation, Day 4 Read More »
A while back I received a large lot of capacitors that I got for a fair price, just had to buy enough to get the per item cost of shipping down to an acceptable level. The base price per capacitor is more than reasonable in the first place, just a mere 1€ a piece! I
25x 350uF/1500V Film Capacitors – Isolation, Day 2 Read More »
A teardown of a Danfoss VLT6000 4kW VFD, a run down of the current paths in the system and I show which parts I find to have a value. Check out some of my other Variable frequency drive teardown videos, like this 10 kW drive! Datasheet on the unit: https://www.danfoss.com/en/products/ac-drives/dds/vlt-and-vacon-legacy-drives/vlt-6000/#tab-overview
Teardown of Danfoss VLT6000 4kW Variable Frequency Drive Read More »
This is a introduction to the differences between AC and DC fuses. I also use a high voltage / current discharge capacitor for a destructive test of the two difference fuses. You should also check out how ingenious high voltage fuses are made in this article Teardown of a medium voltage fuse (7200 V /
AC vs DC fuses, High Current, Explosive Destructive Testing and Theory Read More »
This is the third experiment with the bank of 35 electrolytic capacitors connected in series. Results are better than the theoretical estimate, which was 6000 A limited by ESR. So getting just over 7000 A is good, but the result is still a little tame when it comes to action. These tests had the bank
5kJ Capacitor Bank Fired at 12kVDC / 3.5kJ Charge Read More »
Second charge experiment with the bank of 35 electrolytic capacitors connected in series. The bank did however not get charged to more than 50% of its maximum holding charge, due to too weak power supply. More results will follow when a new power supply have been made and tested. All discussion about this bank can
5kJ Capacitor Bank Fired at 2kJ Charge Read More »
With the snubber capacitor calculator, you can calculate the needed snubber capacitance. The correct value is needed in order to protect your inverters IGBT/MOSFETs. Protect them from too high switching transients, depending on your busbar layout and stray inductance. Try the new online calculator at: http://kaizerpowerelectronics.dk/calculators/snubber-capacitor-calculator/
New online calculator: Snubber capacitor calculator Read More »
For now all details during development and testing can be found on the forum thread: https://highvoltageforum.net/index.php?topic=25.0 35 capacitors in series, each 450VDC/1000uF, for a 48 uF bank with a voltage rating of 14000VDC, making it able to store roughly 5kJ.
5kJ capacitor bank, 1.5kJ BANG test at end! Read More »