It's been awhile but lots has happened.
To save having to have a 1:1 isolation transformer made with 200kV plus isolation (read very very expensive) I decided to make an isolated motor alternator system out of two Fisher and Pykel washing machine motors. These units are direct drive in these washing machines and are good to about a kilowatt, unfortunately they are three phase so the motor is driven in Delta and the alternator is wired Star. We are only using one phase of the three for terminal power. We need a power supply at the terminal of 400 watts max. The workshop here beat me to finishing, they got the two motors mounted up coupled with a meter of polycarbonate tubeing for the isolation long before I finished the motor drive electronics.
And yes that is one of my turbo controller boards in there doing the business. Just bigger IGBTS in this case 15amp units @ 1200 volts. DC bus increased to 160volts, current trip set to 5 amps per phase
The electronics was run for a few days with the alternator loaded to 300watts. the motor alternator setup looks like this
Now to get this arrangement on to the terminal we needed a crane to hoist the parrot cage off the terminal for service so a cherry picker was squeezed into the lab
so that a simple outrigger type crane could be installed
I then had to complete the terminal wiring by putting in all the resistors across the accelleration tube segments
Now moving up from the acelleration section
Heres a couple more pics working our way up the terminal this next one shows the ionsource and motorised leak valve
The next photo shows the electronics at the top of the terminal. Constant current supply for thr ionsource electromagnet, Glassman 0-5kV 0-100mA supply for the ion source and the einzel supply and montitoring electronics that is interfaced to fibreoptics to the control rack below.
Now to use the new Crane to lift and place the parrotcage on the terminal. Note that the bottom section of the cage is covered in 0.125"thick lead so we dont x-ray ourselves while operating
I'll see how all this looks before adding more