AW: Re: AW: [EVGRAY] Re: Push pull generator.

Body

Hi Warren, it's all about protecting the mosfets when switching the switch when the pushpull transformer goes into saturation for a reason, the impedance of the transformer is so small that the current across the dc link can go up and destroy the mosfets. I would like to prevent this via a choke which does not saturate so quickly by a powder core and so maintains a minimum impedance. Greetings Sven
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-------- Ursprüngliche Nachricht --------
Von: "Warren Keillor [email protected] [EVGRAY]" <[email protected]> 
Datum:28.06.2018  18:53  (GMT+01:00) 
An: [email protected] 
Betreff: Re: AW: [EVGRAY] Re: Push pull generator. 

Sven 

Is it possible at this point to consume the current, regardless of waveform, on a tesistance load, such as Chromalux elements as in a hot water heater?
Cheers Warren

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On Thu, Jun 28, 2018 at 9:07 AM, [email protected] [EVGRAY]
<[email protected]> wrote:
 
Hi Ole and all,

maybe it is important to put an extra choke on the Pushpull Center tap. I could imagine that at that time I brought the transformer into saturation and the resistance became very small and thus for a short time very high currents were flowing which the IGBTs could not survive.

regards

Sven