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Supercapacitor charging methods from 0 V.
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drummerdimitri:
So I have a supercapacitor bank that I like to play around with for tab welding to ups/inverter testing etc...

The problem I've been having is no power supply with a short protection will charge the bank up from 0 potential since the internal resistance of the capacitors is too low and would need to draw huge amount of current so they just shutdown.

The only way I can see this working is by using a CC power supply.

I've managed to charge them up decently with a Buck converter and a high power 24V DC power supply but the buck converter is limited in terms of power and needs around 5 minutes to fully charge.

I'd rather not use a car battery to charge them up since I have no control over the rate at which they are being charged at and don't want to harm the battery by doing so.

What would be the best way to charge them up quickly?

Would a 600W power supply meant for LED's work? They work in CC mode so I believe this can work...



ogden:

--- Quote from: drummerdimitri on February 25, 2018, 07:39:44 pm ---Would a 600W power supply meant for LED's work? They work in CC mode so I believe this can work...

--- End quote ---

You mean something like PS-MW-600-12 ? They are for LEDs, but still constant voltage supplies, with some short protection. In short: it will not work. Short protection will just choke supply and it will not output any power. You really need purpose-built CC hi-power supply.

[edit] Don't confuse LED supply with LED driver.
drummerdimitri:
I was thinking something like the Meanwell HLG-600H-15 LED driver.

Works with CC and CV modes not sure if it will read a short at 0V though...
ogden:

--- Quote from: drummerdimitri on February 25, 2018, 08:07:50 pm ---I was thinking something like the Meanwell HLG-600H-15 LED driver.

Works with CC and CV modes not sure if it will read a short at 0V though...

--- End quote ---

Exactly. In case of short it can act different way. Unfortunately datasheet is not that specific. Could be so that short protection differs from CC mode at nominal output voltage. We can only guess here. BTW you can try to contact MW support and simply ask them.
drummerdimitri:

--- Quote from: ogden on February 25, 2018, 08:15:53 pm ---
--- Quote from: drummerdimitri on February 25, 2018, 08:07:50 pm ---I was thinking something like the Meanwell HLG-600H-15 LED driver.

Works with CC and CV modes not sure if it will read a short at 0V though...

--- End quote ---

Exactly. In case of short it can act different way. Unfortunately datasheet is not that specific. Could be so that short protection differs from CC mode at nominal output voltage. We can only guess here. BTW you can try to contact MW support and simply ask them.

--- End quote ---

So will it work? I can always try it before I buy it...
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