Hi,
In my application I have two floating capacitors (C1 and C2 shown below Figure 1) at 40Vdc with high 180deg out-of-phase voltage ripples which I need to cancel out.
For this task, I am designing an Unregulated DC-DC converter (<300W), with the following specs:
- Bidirectional (two ports C1 and C2), (future work will include a third port C3)
- Isolated
- Unity voltage gain (from 40V +/-20% to 40V +/-20%)
- High efficiency (>90%)
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I need advice in choosing the best (in terms of efficiency and performance) IC controller and power topology to be used, I found so far:
IC Controller: LM5030, LM5033, UCC28230, or else?
Symmetrical Regulator Topology: FB, HB, or Push Pull, or else?
XFO: Symmetrical Transformer with Aux winding? Any ref number?
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Figure 1
Typical (C1 and C2) voltage waveforms (Blue and Red, Figure 2) can look like the one below. The Green waveform, represents the new voltage of both capacitors after the out-of-phase harmonics are cancelled out.
Figure 2
Any advice is highly appreciated!
Mohammad
