A grid tied hybrid system that could be used on an RV!
Hi, This is the best I've seen. hybrid grid tied
Forum Discussion
Hi Don,
This is interesting technology... I'm still trying to understand some of the advantages.
Is it really eliminating the charge controller, or just moving it? The microinverter is taking 48v panel voltage and boosting it to 240 volts AC. The Magnum inverter takes the 240 volts and uses it to charge the battery bank and power loads using the load-support feature. Does the Magnum handle step down for 120 volt loads? The installers freely admitted the microinverters were costlier than a conventional charge controller, plus what is the efficiency cost of the double conversion?
Can the Magnum hybrid dual-source AC input? AC input 1 is the 240 volt PV array, AC input 2 is the park 120 volt 15 amp outlet? From the video, it appeared you need to backfeed the grid, and that backfeed connection is what the hybrid inverter is using for an AC input.
With a conventional configuration, your solar is supporting the hybrid inverter by feeding the DC input, which works independently from any AC source available from the park.
If I had a 2000 sq foot roof to cover with solar, I would consider the mircoinverter grid tie route, since high voltage low amperage transmission makes sense. Batteries would be optional at this point, as long as the utility gives credit for backfeed. Daytime grid input offsets night time draw. Using time based billing, the kwh cost drops at night as well. Sell high, buy low right?
A big Class A RV only has a few 100 sq foot of roof surface available. So maybe they need to run 60-100 volt DC to save on wire. I suppose working with high voltage DC is beyond the means of inexperienced DIY? High quality MPPT controllers accept up to 150v PV voltage, that's quite a large array.
Very interesting discussion!
This is interesting technology... I'm still trying to understand some of the advantages.
Is it really eliminating the charge controller, or just moving it? The microinverter is taking 48v panel voltage and boosting it to 240 volts AC. The Magnum inverter takes the 240 volts and uses it to charge the battery bank and power loads using the load-support feature. Does the Magnum handle step down for 120 volt loads? The installers freely admitted the microinverters were costlier than a conventional charge controller, plus what is the efficiency cost of the double conversion?
Can the Magnum hybrid dual-source AC input? AC input 1 is the 240 volt PV array, AC input 2 is the park 120 volt 15 amp outlet? From the video, it appeared you need to backfeed the grid, and that backfeed connection is what the hybrid inverter is using for an AC input.
With a conventional configuration, your solar is supporting the hybrid inverter by feeding the DC input, which works independently from any AC source available from the park.
If I had a 2000 sq foot roof to cover with solar, I would consider the mircoinverter grid tie route, since high voltage low amperage transmission makes sense. Batteries would be optional at this point, as long as the utility gives credit for backfeed. Daytime grid input offsets night time draw. Using time based billing, the kwh cost drops at night as well. Sell high, buy low right?
A big Class A RV only has a few 100 sq foot of roof surface available. So maybe they need to run 60-100 volt DC to save on wire. I suppose working with high voltage DC is beyond the means of inexperienced DIY? High quality MPPT controllers accept up to 150v PV voltage, that's quite a large array.
Very interesting discussion!
