Nevilleh wrote: I don't know where you got that sort of price from, sound way too much to me.
I got that price from working out what is required and adding the price of the parts together.
Nevilleh wrote:I could build a boost converter to take say 150-odd volts input and step it up to 650V which is enough to power a variable frequency 3 -phase motor controller .. I can't see the cost being all that high.
The Spec I drew up was a full bridge using a tranformer.
It was also from 48V as after that the batteries get a bit tingley to touch
Nevilleh wrote:Might be an interesting concept to think about.
There is a thread that AC motor started on this subject.
I lost interest after the price.
Once again I also mention that the inductor for 100kW isn't small either (or cheap).
And I doubt substituting ultra-caps with a smaller(20kW) converter will be any cheaper.
Here is the thread should you wish to persue it:
viewtopic.php?p=37348&t=3101&title=12vo ... ers#p37348