Using an AC/DC Power supply to test an ESC+BL motor

[Caedes]

Hello !

I'd like to test my Schultze 32.80K and my plettenberg BL motor on a AC/DC power supply.
I already have a 36V 47A power supply (70A on peaks).

But, in the documentation of the ESC, I read :

""Do not use speed controllers in conjunction with a power supply connected to the mains. Energy reversal can occur when the motor slows down and stops, and this may damage the power supply or cause an over-voltage condition which could damage the controller."


Has someone already tried?

I made a search on this forum, and I read : "

As far as the original question.
I have a 40V 50A DC adjustable power supply and use a Castle Creations Phoenix 80 for most all of my BL motor testing.

Greg"

on the post http://www.rcgroups.com/forums/showthread.php?t=175796&page=2&highlight=power+supply+esc


Has anyone got another experience?

Thanks !

Caedes

[jeffs555]

It all depends on the power supply. The motor will generate a back emf that will feed power back into the supply. Some switching power supplies will not handle this and could be damaged. Analog supplies can usually handle the back emf. A lot depends on the output capacitors in the supply. Adding external capacitors can help a lot.

[Caedes]

Thanks for this answer :)

The power supply I have is a Cosel ¨PBA1500F-36
Datasheet is available at http://www.total-power.com/PBA1500F.pdf

[Caedes]

Anyone having another experience? :)

[jeffs555]

The specs on your supply don't say anything about inductive loads, but it is a switcher, so it may or may not work. Adding an external capacitor should help, the larger the better, probably 10,000 mfd or more.