Re: [TCML] MMC Voltage consensus

[bartb <bartb@xxxxxxxxxxxxxxxx>]

Hi Ruben,

Ruben Peters wrote:
> Terry's MMCcalc, rates 25.5kv as very good, while Java TC designer
> recommends a peak voltage of 60kv.
>   
Yes, Javatc is recommending 60kv, but this isn't correct. Should be 
about 42kVp or 30kVrms.
I'll check into that output and find out why it's calculating 60kV.
Javatc will recommend a high derate value of 2.5 x Vp, but this can of 
course be cut down some. I think your 25.5kVrms is fine.

> I've read some places that a voltage just over the peak transformer voltage
> is sufficient; other places that 1.8*peak is necessary; in addition to the
> fact that dielectric strength reduces with frequency (my coil will run at
> about 429khz)
>   
The 4 x 17 string is about 2 x Vp which is good. You should be fine on 
the voltage rating across each string.

Take care,
Bart





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