I need to make a high current linear power supply - 160VDC at 80A - for powering some servo drives. I already have the transformer and capacitors but am a bit hung up on the diodes. From reading and doing some calculations, I need diodes rated at > ~320 PIV and 160A. I can find really expensive diodes that do this, but I am trying to save money (so I can spend it on other machine parts, inevitably...). I've found 50A 400V bridge rectifiers for ~$6. Can I parallel 4 of these off of my transformer and parallel their outputs into the capacitors? Are there any practical concerns here like putting some series resistors in front of the bridges so they share current better?
I've searched here and on the rest of the net and not really found any information about this, so if any can help me out or point me towards some reading material, I'd appreciate it.