magnum hybrid inverter
Hi all, The time is coming when I must choose a new inverter. I'm inclined towards the MSH-M Magnum 3000 watt hybrid. Am I correct in thinking it will "blend" power from shore and battery whe...
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It was GBaxter to PT:
Posted: 12/26/13 04:15pm Link | Quote | Print | Notify Moderator
Hi Pianotuna,
I will give it a try!
With the hybrid models (Victron, Magnum or the old Trace) they all need a voltage and frequency "source" to sync to in order to support the source. So in the case of say grid the hybrid model is in sync (voltage and frequency) with the grid and in order to stay connected and add any current it must follow the waveform of the grid. Since it has to follow the waveform if the voltage of the grid drops so does the hybrid voltage output in order to stay sync'd. If the grid voltage falls too much it will disconnect from the inverter but let's just say in this case the grid voltage drops but not too much.
If the inverter tried to raise it's output voltage in turn trying to raise the incoming grid voltage it would have to be able to change the waveform of the grid which would mean it would have to have enough power to support the incoming grid all the back to the source which it cannot it just doesn't have enough power to run a neighborhood or change the grid waveform.
So in short it just has to follow the grid (or generator) waveform for voltage and frequency but it can add current to the waveform which is exactly what it does.
So an example might be you are plugged into a 20A outlet/breaker and grid is 120 Vac / 60Hz and everything is fine. Then it starts getting hot and everyone in the park has a/c running. The grid voltage falls to 112 Vac but you still have 20A available just low voltage. You have your hybrid model set to 20A input so when you turn on your a/c and the microwave you are now drawing 30A or +10A over the 20A setting. You will be using 20A from the grid and the hybrid will add 10A from the batteries for a total of 30A so the 20A breaker doesn't trip on the pole. The voltage reading will still be 112 Vac but you just added 10A of current to the loads.
Gary
Posted: 12/26/13 04:15pm Link | Quote | Print | Notify Moderator
Hi Pianotuna,
I will give it a try!
With the hybrid models (Victron, Magnum or the old Trace) they all need a voltage and frequency "source" to sync to in order to support the source. So in the case of say grid the hybrid model is in sync (voltage and frequency) with the grid and in order to stay connected and add any current it must follow the waveform of the grid. Since it has to follow the waveform if the voltage of the grid drops so does the hybrid voltage output in order to stay sync'd. If the grid voltage falls too much it will disconnect from the inverter but let's just say in this case the grid voltage drops but not too much.
If the inverter tried to raise it's output voltage in turn trying to raise the incoming grid voltage it would have to be able to change the waveform of the grid which would mean it would have to have enough power to support the incoming grid all the back to the source which it cannot it just doesn't have enough power to run a neighborhood or change the grid waveform.
So in short it just has to follow the grid (or generator) waveform for voltage and frequency but it can add current to the waveform which is exactly what it does.
So an example might be you are plugged into a 20A outlet/breaker and grid is 120 Vac / 60Hz and everything is fine. Then it starts getting hot and everyone in the park has a/c running. The grid voltage falls to 112 Vac but you still have 20A available just low voltage. You have your hybrid model set to 20A input so when you turn on your a/c and the microwave you are now drawing 30A or +10A over the 20A setting. You will be using 20A from the grid and the hybrid will add 10A from the batteries for a total of 30A so the 20A breaker doesn't trip on the pole. The voltage reading will still be 112 Vac but you just added 10A of current to the loads.
Gary
