Can I Plug a Dc Power Supply Into an Mppt Controller
Employ of a bench DC Power Supply as PV input to a Smart Solar Charge Controller
I accept an external organization that ties into my Victron system via a Modbus TCP connectedness to my CCGX. My need is to refine some tuning parameters in the external system. To do this I demand to control the PV voltage and amperage inputs to my Smart Solar 150/45 controller wired to a 48V battery depository financial institution. I will do this past removing the PV Console connections and using the Ability Supply instead.
Testing output from the Bench Power Supply volition range from 60-75V and 0-33A, non to exceed 1200W total output power.
Are there whatever risks to the charge controller during this test scenario?
Just desire to make sure I don't fry something.
Thanks,
Pat
I remember seeing an event with Smartsolar MPPT units running older firmware.
These units could lose their voltage setting and reset back to "12V" when asunder. Reconnecting the solar input of the MPPT to a 48V bench PSU could destroy them. This was considering the PSU can deliver a high tiptop electric current for a short duration (unlike a solar console).
EDIT: Run into release notes for MPPT Firmware version 1.37
Known issues:
- When connecting a power supply on the PV inputs, for example on a test bench, in combination with a battery (24V..48V) on the Battery input, a reset to default settings immediately triggers an error 38 (overvoltage). This enables the PV input brusk protection; and considering there is a ability supply connected; instead of a real PV array, the MPPT charger is damaged. Introduced in v1.26 and solved in v1.39.
I don't come across any trouble with that. I apply a bench power supply when conducting my own tests.
As usual, the MPPT will only accept equally much ability as it tin, merely in your case it will virtually likely outperform the power supply and hunt around for a MPP when the power supply starts to struggle.
What sort of topology is the bench power supply? Is it switching or linear? I've used linear ones, not sure how a switching one would acquit.
The KLP was due for a calibration, then I sent it to be re-calibrated. It will have virtually two weeks.
Volition do a "smoke test" with the charge controller when information technology gets back, and post the results.
Thanks,
Pat
Finally got the power supply dorsum from calibration. Set it at 70V and 15A output (1050W). The 150/45 MPPT (48V Battery Arrangement), maintained a steady output with the voltage to the battery slowly rising during the one hour initial test.
So far so good, will go along testing.
Pat
Did y'all observe any effect on the KLP when the MPPT did a MPP sweep?
Not actually, but I have non put a telescopic on the KLP output still. The only thing I noticed was that the KLP was continuously switching between Constant Voltage and Constant Amperage modes to proceed the set voltage and amperage output constant.
I guess that's to be expected since the MPPT has the capacity to consume a lot more amperage than what the power supply was set to.
Pat
Source: https://community.victronenergy.com/questions/16668/use-of-a-bench-dc-power-supply-as-pv-input-to-a-sm.html
Thanks for the information. I'k running 1.39 on the CC so I should be ok.
Also, I plan to set the constant voltage output of the power supply to at to the lowest degree Vbatt + 5V. Which in my case is nigh 60V. That way the accuse controller should turn on usually. With this power supply if I ready the Voltage to 65V and so I can adjust the max amperage output from 0-18A and still remain in constant voltage mode.
Pat