Shunt regulators

[hvirtane]

I'm looking for a shunt regulator.

We needed as well a good circuit to prevent

discharging batteries too low.

At present we are using 12 Volt systems,

but in the future we are going to use

also 48 volt systems and then we

would need also need big shunt regulators

up to 10 kW.

Have you (others besides Hugh himself) used the circuit as described by Hugh here:

http://www.scoraigwind.com/circuits/chargecontrol.htm

How big currents can it take in?

What are your other experiences about that circuit?

How difficult was it to build?

Costs?  

- Hannu

[domwild]

Hi,

Can only assist you a little bit: Home Power magazine, author Chris Greacen has designed a shunt regulator to handle 15 Amps at 12VDC. I do not have a URL for it; see Google. Have not built that one. Input voltage must be below 16VDC as the NE555 timer can only handle 16VDC.

In Hugh's circuit two relays are used with a rating of 16A at 12VDC, this may give you an idea of what sort of a load he is switching on.

[Nando]

HANNU:

Please explain in detail why you need a shunt regulator, specifically for a 10 KW capacity and it seems to be 48 volts.

Shunt regulators are used to limit the upwards voltage incrementing.

Better, detail the whole system, I may be able to help you better you can email me direct nando37-at-comcast-dot-net

Regards

Nando