• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

DC link Choke Inductance and currrent calculation

v1.5

New Member
hi all.
Today i was searching about dc link choke for vfd project. I have already found some formulas and calculations.my project will monophase power supply(230Vrms) and three phase motor drive(max 1kW for begin),50Hz.
link:https://voltage-disturbance.com/variable-frequency-drive/dc-choke-for-vfd/
At inductance formula there is a "% impedance required from the DC choke " . I didnt know that ,so what is it ? Is anyone have an idea ? At the YASKAWA GmbH 's frequently asked question(attached) ,they are telling that ". Consequently when the voltage drop of an AC reactor is 3% the voltage drop has to be 6% on a DC choke to get the same effect. " . So at Yaskawa 's example it uses 0,06 constant. But what should i use on my project and also what is that about ? How can i determine required impedance ?
Lots of thanks.Hans.
 

Attachments

Latest threads

EE World Online Articles

Loading

 
Top