Re: [EVGRAY] Re: Neutral spike

Body

Sven,

Excellent work!

I was experimenting with a ferroresonant transformer with about 30 volts
or less at about one amp or less, more like 500 milliamps, and blew some
very highly rated TVS diodes something like 600v 1000 amp so I imagine
you have gone through your share of silicon parts. At least the TVS
diodes saved the timer and comparator used for the pulse width adjustment.

What is your reactive power/input power ?

How do you intend to make use of the reactive energy, store in capacitors?
If you have rotoverter use like this -
https://en.wikipedia.org/wiki/Synchronous_condenser


On 11/15/2018 3:11 AM, [email protected] [EVGRAY] wrote:
>  
>
> Hello to all those interested, I have now built a push-pull inverter
> for the transverter anti-drive to drive it. From 37 Hz 650Hz is fully
> adjustable and the pulse width.
> A simple square wave signal is generated and sent. It works
> wonderfully. The interference is a problem when switching 350V peaks.
> I have now wrapped all power lines with aluminum foil and this
> one-sided grounded. The boards I will install in an aluminum housing
> and also this ground, the disturbances are almost all gone. By
> shielding, the energy is no longer emitted and remains in the lines
> apparently, since the shielding, the high-power mosfets are very hot
> although they are used at most 10%. The cut-off voltage at the drain
> increases in the kilovolt range when the transverter is connected. The
> complete line to Transverter is also shielded. I now wanted to build
> an Energy Recovery Snubber to recycle that energy. First test show
> that you can drive the transverter so much more efficient. I have to
> build this inverter even more reliable or change.
> Best regards
> Sven
>
>