Inspired by PStechPaul's idea of a modular charger and the availability of SiC and LLC devices,
I've decided to go ahead with a SiC / LLC based modular charger design / DIY homebrew build.
Design choices:
I've decided to go ahead with a SiC / LLC based modular charger design / DIY homebrew build.
Design choices:
- A SiC PFC CCM boost input stage, 390V DC out.
- 3350 W out, (230V, 16A AC in) per module.
- LLC transformer topology for isolation and additional boost up to 580V (for HV battery packs). FIXED FREQUENCY. Boost: by transformer turns ratio only.
- CC mode only, buck hysteresis current control