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  1. #21
    Advanced Member level 5
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    Re: Flyback Airgap Doubts?

    (i'll say nothing, i got my brains smashed up once when asked to design Cuk's single stage isolated PFC'd Cuk converter for an EV charger at 3000W...after a week, all i had was a sim which didnt seem to work that well, so i got taken off the job....i seem to remember they also wanted it bidirectional...could be wrong about that bit)
    sorry to go off topic....OP please send latest schem etc and ill take a look



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  2. #22
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    Re: Flyback Airgap Doubts?

    Isolated PFC Cuk @ 3kW is only for the power electronics engineer with 15+ years of solid experience ...


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  3. #23
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    Re: Flyback Airgap Doubts?

    if i recall, cuk converters need to be individually tuned by gapping the
    inductor one at a time
    please forgive me if i remember incorrectly


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  4. #24
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    Re: Flyback Airgap Doubts?

    you recall incorrectly ... tuning, as such, was only ever required if you wished to get close to minimum current ripple on the coupled inductor AND transformer variants - it is possible to design the coupled chokes - such that very close to minimum ripple is achieved without adjustment.


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