Primary 120 volt DC automatic battery bank to converter to Secondary 48 volt dc inverter

Any power source goes with the theory that the higher the voltage for the same watt load being driven the less that the amp load will be for the voltage increase. 

example watt/voltage=amp 1000/120=8.33 amp 1000/240=4.16 amp

Raise the solar/wind input voltage for battery bank float voltage storage and less amp drain will be pulled from the batteries for the same wattage being operated. 

Taking 10 total 12/volt 100 AH batteries and wiring in series positive to negative in the entire string float voltage is increased to 120/volt dc but the AH does not increase. To increase AH parallel positive to positive and negative to negative would give 1200 AH for the 10 batteries but the voltage would only be 12/volt. Knowing that 120/volt DC is 12 times more efficient then 12 volt DC for the same wattage load being driven makes sizing strings of float voltage batteries capable of making many electrical power options possible. To determine battery bank float voltage the converter or inverter voltage is the designed system requirement. 

String sets of float voltage batteries PLC controlled for cycle operation where no one set is drawn 20% leaving 80% in reserve pulled online for cycle operation and offline for charging/fault with proper HVAC environment give the eol end of life of every product its best performance and survival. The PLC gives total control of each string set where online cycle and offline cycle can isolate any one set from fault leaving remaining sets to cycle as necessary. 

600 to 1000 volt dc inverter

SMA STP24000TL-US-10 24kW, PV Inverter, Sunny Tripower series

With advancement in microprocessor controlled inverters and there dc input voltage now up to 1500 volt dc makes matching client wattage loads easy using this higher dc voltage.

A good example of this theory is 12/volt dc inverter virus 120/volt dc inverter for a 10,000 watt load being driven. Wattage/voltage=amperage 

10000/120=83.33 amp draw 10000/12=833.33 amp draw both have the same wattage loads but the voltage is increased to lower amp output for the same wattage load being driven. 

Using this principle then to match your 100 or 200 Main Grid meter and panel wattage load 24000/240/100 (100 Amp Main) aka 10 KW Wattage/voltage=amperage 48000/240/200 (200 Amp Main) aka 20 KW.  Consulting options available. 

Once again with microprocessor controlled inverters and other quality products it is very easy to use the utility meter as a battery charger to stop the meter from spinning with battery banking & inverter power for days or weeks at a time. It is also easy to add solar and wind hybrid electrical power and go off grid entirely. And it is possible to make your own power plant a mini micro grid taking 48/volt dc and above dc voltage to 7.2 KV (7200 volts primary AC) with step up transformers and loading step down transformers with on site secondary single & 3 phase loads. These types of electrical connections are called island style where they sense, monitor, and perform as designed to contactor type. Example 2 ac hot loads can be monitored and automatically transferred from grid to auto start generator or any other designed power source like a battery bank dc to ac inverter set up. These power transfers happen so rapidly that clock/computer resets are not necessary. By having microprocessor inverter control the programing can be set many different ways.Example like the battery bank is primary power source for client kw load instead of grid meter which is set to be used for battery charging and mixed with battery/grid power for high wattage demand draws automatically. 

 Utility companies have had dual voltage and other voltage primary options for many years.  Dual dc voltage options make the theory higher the voltage less the amp draw is lowered for the same wattage being operated. An example of this is the ISS International Space Station uses dual dc voltages primary that the solar charging takes to battery banks and steps down to power channels for onsite wattage usage. Once again it all works with switching contactors that are coils of different voltages not touching each other but electromagnet fields. Same principle as ac KV to ac KW transformers primary KV voltage does not touch secondary KW the electromagnetic fields are what steps KV to lower KW by coils. These ac coils have a certain number of wraps of wire around a iron core.

There are dc coils and transformer that will do the same principal as the ac coils it is just a different designed off the shelf product. As picture below example.

120 volt dc to 48 volt dc converter. So let's figure the numbers to see how this can save drain from the battery bank. Inverters  48 dc volt 10000 watt each for 120/240 single phase ac output

X 10=120v series                                      X 10=120v series

120v to 48v converters

                                                    Inverter                                  Inverter

                                                                 

                                

                                       10000/48=208.33 amp            10000/48=208.33 amp
                                       10000/120=83.33 amp            10000/120-83.33 amp

By raising the dc voltage to 120 volt the same wattage being operated can be lowered for amp draw.

Consulting online/onsite email your request to D B Electric for your pure sinewave electrical power wattage needs.

D B Electric
email www.elecwired@live.com