soft switching push pull converter (need help..)
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Posted by on April 11, 2007, 8:14 am
Please log in for more thread options Hi everyone.. I have designed a soft switching push pull converter using for IGBTs.. The problem is the circuit keep on short circuited. The transformer is winded by myself and it is center tapped for primary and secondary windings. it has a ratio of 1:1. For the load side, which is consist of an L and C formed by the low pass filter. Do i need to ground the load side? What are the maybe the causes for my short circuit? Thanks.. Regards: PQ | ||||||||||||||||
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Posted by Anthony Fremont on April 11, 2007, 12:35 pm
Please log in for more thread options peiquan26@gmail.com wrote: Schematic? | ||||||||||||||||
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Posted by John Fields on April 11, 2007, 1:21 pm
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On 11 Apr 2007 05:14:06 -0700, peiquan26@gmail.com wrote: >Hi everyone..
>I have designed a soft switching push pull converter using for IGBTs.. >The problem is the circuit keep on short circuited. The transformer is >winded by myself and it is center tapped for primary and secondary >windings. it has a ratio of 1:1. > >For the load side, which is consist of an L and C formed by the low >pass filter. Do i need to ground the load side? >What are the maybe the causes for my short circuit? >Thanks.. --- Transformer saturation, no dead time, secondary resonance at your switching frequency with no R in the load, ??? -- JF | ||||||||||||||||
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> I have designed a soft switching push pull converter using for IGBTs..
> The problem is the circuit keep on short circuited. The transformer is
> winded by myself and it is center tapped for primary and secondary
> windings. it has a ratio of 1:1.
>
> For the load side, which is consist of an L and C formed by the low
> pass filter. Do i need to ground the load side?
> What are the maybe the causes for my short circuit?
> Thanks..