Hi Mick,
go on......where's your sense of adventure!!! There's nothing more exciting than having 585V DC link
capacitors discharge in front of your face in a shower of sparks, smoke and molten metal.
It makes your heart pump really fast....and thats got to be good for your health.
In truth its not quite as difficult as it seems, there is a large body of published literature on the subject
of active PFC.
Depending on your drive you could instead of hooking three phase wires to it hook two DC wires of your home brew
boost PFC single phase DC power supply. I work for a company that repairs industrial welding equipment
I could walk around the workshop and pick up all the secondhand parts I need within the hour. A $50US
Texas Instruments Lauch XL microcontroller board and your in business, and I wouldn't be stopping at 3kW,
I'd be aiming at 5kW cont and 10kW 10 sec overload.