I have currently designed a powerr converter, with a single phase transformer which operates at >200kHz. The design goal was to create a converter that increases power density, by minimzing the size of the passive components, namely the transformer and the output storage capacitors, which are pulsed (so are typically oversized for this purpose). The topology is an LCC converter, frequency modulation.
My question is, in terms of power density (transformer size, transformer weight, etc). Would you recommend I investigate the possiblity of using three-phase primary windings? I have read that using three-phase primary windings can reduce input ripple current, and output capacitor ripple current. I am thinking of a three-phase primary, single-phase secondary with voltage multipliers.
Is there any benefit to this transformer topology compared to using single-phase primary windings? May I realise some benefits, or with the extra phases always add additional size and weight to the transformer?
Although I have experience with power electronics I have not really investigated the benefits of single vs. three phase windings!
Simple spec is: 270VDC in, 5kV, 2.5kV out with 12mA, 180mA respecitvely - so a high voltage, high step-up application - if that helps.
Any suggestions welcomed.
My question is, in terms of power density (transformer size, transformer weight, etc). Would you recommend I investigate the possiblity of using three-phase primary windings? I have read that using three-phase primary windings can reduce input ripple current, and output capacitor ripple current. I am thinking of a three-phase primary, single-phase secondary with voltage multipliers.
Is there any benefit to this transformer topology compared to using single-phase primary windings? May I realise some benefits, or with the extra phases always add additional size and weight to the transformer?
Although I have experience with power electronics I have not really investigated the benefits of single vs. three phase windings!
Simple spec is: 270VDC in, 5kV, 2.5kV out with 12mA, 180mA respecitvely - so a high voltage, high step-up application - if that helps.
Any suggestions welcomed.