The motor has been found!

27.02.2009

Quite unexpectedly, I’ve made myself a birthday present It’s the new model of an 11″ motor Kostov.

This is a more powerful motor than the one that I had in mind at the begging.

The motor that I wanted to use was a 22 KW at 144 V. And now I have a rated 35 KW at 168 V. I’ve heightened a bit my expectations….. The more, the better

I’d like to express my gratitude to Mr. Plamen Nakeff from ELPROM-EMS for his assistance during the purchase of the motor and special thanks also to TInko from the VW Club for his navigation!

Now I have to choose IGBT models for the controller. If there’s somebody who understands these kind devices, I’ll be very grateful if he contacts me! I’ve focused on the U series by Fuji: http://www.fujisemiconductor.com/html/table/91200/91227.htm

What’s new?

12.02.2009

There was some kind of standstill during the winter season.
To begin with, I’ve ordered 2 very interesting books from Amazon.com
I’ve posted some up-to-date pictures to stimulate you!
This is a Curtis 1221-7405 400 А controller on 120V… or at least it was All the Mosfet (BUZ 30A) transistors have burnt. I found it in Stamboliiski town in some junkyard. It’s quite impossible to fix it, but also it’s too small for my purposes. Apparently here we have an overloading process that lead to the current state of the transistors. If even one transistor should burn out, all others will follow the example. It’s interesting to know who it’s made. They used lots of electrical condensers in order to increase the area through which the electricity will flow, and that’s a foxy trick. There’s no problem with putting only one capacitor, but its pinouts won’t let enough electricity pass. The pinouts of the capacitor are put directly on the power armature and this blocks all the inductance. You can see a scheme of the controller here:

http://www.evdl.org/docs/curtis_1221b_schematic.pdf

ELPROM-EMS have released a new series of motors and I think I’ll get myself one of these very soon

Expect more news soon