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Just to get started on this thread Ill share some of the work I've been doing:
Disclosure: My work is primarilly concerning a single stage PFC controller, as such topology is slightly different from a boost converter that operates directly from a DC supply.
Aim:
Charge at up to 6KW from a 230VAC supply or 48-350VDC, such as a solar array or a portable battery pack. Output voltage: 440VDC, current: Adjustable from 0 to 13ADC at 440VDC.
The output power will be proportional to the input voltage (6KW at 240, 3KW at 120, 1KW at 48VDC)
So far I am using an interleaved aproach consisting of two UC3842 current controllers. These receive the clock pulse from a microcontroller and a modified feedback signal to draw line current in phase with the line voltage.
So far i am aiming at 1.5KW per module, so a complete interleaved pair would supply 3KW in a relativelly small footprint at 60-100Khz
The microcontroller takes care of current regulation, pre-charging, J1772 communication
I'm looking at suitable inductors that could be used for a 50 or 60KW version. I should have a working prototype finsihed by december. The system is able to operate from DC with increased output power by 33%.
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