Paralleling Power Supply Units Made Easy ???
I am considering paralleling a couple of 20a variable adjustable psu's for 40a charging. According to what I have read on the world wide inter-web, it can be done quite easily, provided the following ...
Forum Discussion
Phil, if you understand feedback theory then you know there's absolutely nothing to worry about. Both supplies have adequate phase & gain margin.
You will never, ever see instability. Guaranteed!
As for saying "When paralleling 2 supplies that are not designed to be paralleled together, you are effectively injecting a dynamic disturbance into each supply's independent feedback control loop.", that's BS. Adequate phase and gain margin will reject any dynamic disturbance. Plain and simple. This is as basic as it gets in feedback theory.
Sal
You will never, ever see instability. Guaranteed!
As for saying "When paralleling 2 supplies that are not designed to be paralleled together, you are effectively injecting a dynamic disturbance into each supply's independent feedback control loop.", that's BS. Adequate phase and gain margin will reject any dynamic disturbance. Plain and simple. This is as basic as it gets in feedback theory.
Sal
pnichols wrote:ken white wrote:
When paralleling 2 supplies that are not designed to be paralleled together, you are effectively injecting a dynamic disturbance into each supply's independent feedback control loop.
The gain/phase margin around this disturbance loop is quite different so instability could become an issue.
Ken,
You're right on with this comment - however many outside of the electrical engineeing world will have no idea what this means.
I'm well aware of feedback loop theory and practice,
