Balanced loading of DC Bus?
Balanced loading of DC Bus?
(OP)
I am looking suggestions on how to achieve balanced loading of a 700 VDC bus without incurring large power losses using bleed resistors. The buss consists of two 450 VDC rated capacitor banks conected in series. The loads are to be connected across each capacitor half-section. The loads are designed to operate at 300-400 VDC. Approximate loading is 40KW.





RE: Balanced loading of DC Bus?
Very high power isn't my area, but people will probably want to know - how matched are the loads?
But the entire approach sounds dangerous. If one of your loads suddenly disappears, then it's going to get interesting.
RE: Balanced loading of DC Bus?
RE: Balanced loading of DC Bus?
Thinking outside the boundaries of the problem you've stated, where does the 700 VDC come from? Is there any simple change that could be made there to halve the voltage and double the current? Some power supply architectures can be 'halved' very easily, like the 110/220 VAC switch on some power supplies.
Other than that, I foresee active voltage regulators in your future.
RE: Balanced loading of DC Bus?