Electrical Use Cases - WindStream Technologies SolarMill SM1-1P User Manual

The SolarMill unit outputs DC power and that power is used to charge to a set of (4) 12V deep cycle
lead acid batteries. After the batteries, the customer has two choices on how to use this available
energy.
Grid tied
In this configuration, the bank of batteries
is connected to a grid tie inverter which
connects to the user's electrical panel*.
This inverter pushes power back to the
grid efficiently when the batteries become
fully charged. Check with your distributor
for WindStream approved inverter models
compatible with this type of connection.
*Grid connected systems may require
application and agreement with the local
power utility.
To other
SolarMill
strings
30A DC
Circuit
Breakers
+
+
DC-DC Converter
Off-Grid application
10

Electrical Use Cases

Non-Grid tie
AC Loads
inverter
To other
SolarMill
strings
+
+
12 VDC Loads
To other
SolarMill
strings
30A DC
Circuit
Breakers
+
Grid-tied application
Off-grid storage, with DC or AC loads
The batteries can be used to supply power to electrical
devices in off grid settings. This electrical energy can
power DC powered devices through a voltage converter
(if necessary), or can power AC devices through a
WindStream approved non-grid tie inverter**. It is
important to stress that if loads are not continuously
discharging the batteries, it will likely result in wasted
energy producing potential. A full charge cycle on the
battery can occur in a short amount of time. When
the batteries are fully charged, the system will cease
energy production to protect the batteries.
**Non-grid-tie inverters are not intended to push
power to the grid.
V2.01 Rev 11.3.13
WindStream Technologies
Grid tie
inverter
To other
SolarMill
strings
+
+
+
Main
Electrical
Panel
User Guide