Hi forum members,
I had a peculiar requirement from one of my clients, asking for Controlling the DC Voltage Maximum 50V. And the current is from 10Amps to 1000 Amps.
Current 10 Amps to 1000 Amps is dependant on the product model. But the schematic and the PCB is will be the same. The SCRs/MOSFETs may be different.

Can anybody suggest some links where I can get information regarding the same.

The purpose of this project is to control the voltage at user-set value (example 45V), and the user-set current (example 25Amps).

During the control process, sometimes the current will go out of control, and if the current increases, then the Voltage has to be reduced, so that we maintain the current at user-set value (25 Amps). The value of Current is more important than the voltage, in this application.

Another prime requirement is that after every 2 seconds, this controller has to reverse the polarity of the output voltage. Maybe a H-bridge is required.

My client is having a 3phase transformer that converts 3phase Mains to 3phase 50V, 1000 Amps.

Now my worry areas are:
1. How to sense such a high current (1000Amps).
2. How to control the voltage and current at Max. 50V, Max.1000Amps. Schematic will be a lot of help here.
3. What should be used ? SCRs, IGBTs, MOSFETs? I have never used IGBTs before, hence would prefer SCR/MOSFET.
4. Can we use the DC drive circuit for this application?