SMA WB 3000-21 Installation - Manual (Page 50)

8 Configuration SMA Solar Technology AG
50 WB3-5TL-21-IA-en-10 Installation Manual
8.2 Changing the Plant Password and Plant Time
Requirements:
☐ A computer with Bluetooth interface must be available.
☐ Sunny Explorer must be installed on the PC or laptop.
☐ The plant must be logged in to Sunny Explorer.
• Change the standard plant password (see Sunny Explorer help). This protects your plant from
unauthorized access.
• Change the plant time (see Sunny Explorer help).
8.3 Adapting the Polynomial Curve
The polynomial curve is a programmable power curve depending on the DC input voltage.
By adapting the polynomial curve of the inverter to the plant being used, you can optimize the energy
yield of the plant. To do so, you need the power-voltage characteristic curve for the plant being used.
Request the characteristic curve from the manufacturer of the plant.
To set the polynomial curve of the inverter, you must calculate the coefficients of the polynomial curve
using the Windy Boy Setup Tool. You can adjust the calculated coefficients with the Sunny Explorer
and transfer them to the inverter.
Requirements:
☐ A PC or laptop with Bluetooth interface must be available.
☐ Windy Boy Setup Tool, as of software version 1.05 and Sunny Explorer, as of software version
1.02, must be installed on the computer (for installation file see www.SMA-Solar.com).
☐ The plant must be logged in to Sunny Explorer.
☐ Power-voltage characteristic curve for the small wind turbine system must be available.
☐ AC line voltage or a DC voltage of at least 150 VDC must be present at the inverter.
Procedure:
• Calculate values for polynomial curve with Windy Boy Setup Tool
• Adjust calculated values for polynomial curve with Sunny Explorer
Calculating values for polynomial curve with Windy Boy Setup Tool
1. Open the Windy Boy Setup Tool.
2. Select [Device selection].
3. Select the inverter in the Device type list
4. If the default inverter parameters have been changed, manually enter the adjusted values of the
parameters in the appropriate fields (see the documentation for the Windy Boy Setup Tools).
5. Adjust the polynomial curve (power characteristic curve) (see the documentation for the Windy
Boy Setup Tool). In doing so, display the polynomial curve as monotonically increasing.
6. Note the values for the parameters Wind_a0, Wind_a1, Wind_a2, and Wind_a3.