Quote:
Originally Posted by Daniel_LaFleur
Using a single blade server power supply won't work for a stangard FRC robot since A CIM can pull 132 AMPs at stall (which is where motors start at) and there are typically 4 of those plus other motors.
Sistering (pairing) these power supplies may or may not be possible depending on their overcurrent protection. Most overcurrent protection detects a high current (low output resistance) and shuts down the output, then will periodically turn back on the output and re-check for overcurrent. This results in a periodic pulse (normally called hiccup mode) on the outputs until the overcurrent is removed.
If there is no overcurrent protection on these supplies then pairing is possible using "or-ing" diodes capable of more than the supplies output (typicallly 50% or more). These work by having the power supply with the highest output voltage supply all the current until its output voltage sags to the level of the next highest supply, at that point both supplies share the load until they both sag to the level of the next supply (et cetera).
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If a CIM is pulling 132amps wouldn't PD 40amp breakers throw? And there is a 120amp breaker, so the robot should never pull more then 120 amps, and if it tires to wouldn't the breaker just kill power?
Those power supplies look like the deal of the decade for high power applications, I might get one to run my battery charging array...