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
The battery bank is a great filter and an identical (minus small differences in wiring) load when connected in parallel.
The issues occur when the set-point for each power supply is different.
Each regulator control loop will try to maintain the output voltage to the set-point value.
So, unless each output is nearly identical, then one supply will take over the regulation duties while the other tries to compensate for a higher voltage than its adjusted to.
This may cause instability issues due to both loops trying to do their job.
The only way to know for sure is to build it and test it, then analyze your results to see if it meets your expectations.
Some supplies are designed for parallel operation and will share load currents very well.
Most supplies are designed for single operation and paralleling will have interesting results.
Have fun...
The issues occur when the set-point for each power supply is different.
Each regulator control loop will try to maintain the output voltage to the set-point value.
So, unless each output is nearly identical, then one supply will take over the regulation duties while the other tries to compensate for a higher voltage than its adjusted to.
This may cause instability issues due to both loops trying to do their job.
The only way to know for sure is to build it and test it, then analyze your results to see if it meets your expectations.
Some supplies are designed for parallel operation and will share load currents very well.
Most supplies are designed for single operation and paralleling will have interesting results.
Have fun...
