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 »
This is a Kone KM997160 variable frequency motor drive that is developed and used for elevators. Kone has a long history of their own motor drives that came in more or less atypical enclosures compared to other variable frequency drives. With this KDM model, they do however take the same form as many other drives
Kone elevator 45 kW motor drive teardown Read More »
I repaired a Sodium LWD400-SI 40″ LCD TV, another case of defective capXcon capacitors that was sitting in a too hot power supply. http://kaizerpowerelectronics.dk/general-electronics/sodium-40-lcd-tv-repair/
Another LCD TV repair Read More »