I need some advice on power supply.
I have a big electromagnetic brake that I want to control by PWM. I have the pwm part figured out.
The brake uses 192Vdc @ 30A
I live in Europe and here we have 230vac and 3x400vac on the mains.
It is quite simple to take one phase and neutral and put it through a rectifier and then I have about 192vdc that I need, and use a solid state relay on the AC side. The only problem is the fuse to my house, it's about 20 amps on each phase so I need to use all three phases together to have enough amperage.
I could take three rectifiers, give them one phase and neutral each and mix the output on the DC side. Then I would have 10amps on each phase, but how to switch that high dc load???
I am lost on this one.
Any help is much appreciated