Inverter configuration

In this document

You will learn how to change inverters in your design, set their connection parameters and positioning, or change inverter transformer connections. We will also show you how to add power transformers to the design if required.

Modifying your inverter setup

You can configure the inverter setup parameters in the system design section by selecting an inverter setup. Additionaly, the 3D map will show you the connections of its inverters in the array and their placement.

The array sections connected to each inverter in the setup are displayed on the 3D map in different colors for better visibility.

Individual inverters within the setup

You can expand the setup’s individual inverters and its parameters by clicking on the inverter on the 3D map. Alternatively, reveal the inverters in the setup using the small arrow next to it in the navigation menu.

Inverter selection

Available settings	Inverter selection

Generic inverters have a icon in the manufacturer field, indicating that the inverter cannot be used for bankable reports.

Switch from adapted to manual inverter selection to enable generic inverter replacement.
Click the link to open the PV components catalog and select a new inverter.
Inverter confidence class to help you identify the accuracy and reliability of selected component data.
A link to read more details about the inverter.

To replace the inverters in the setup, switch to manual inverter selection and click the “Change” button. The PV components catalog will open.

The PV components catalog provides numerous filters to narrow down displayed results. From there, you can choose between generic or manufacturer-specific components available on the market. If you have configured your own inverter in the PV components catalog, you can find it in the My components sub-section. Only validated components will be shown.
Select the inverter from the list.
The inverter’s details will be displayed in the properties panel to the right. Apply selected inverter by clicking the “Choose” button.

Once you select the inverter and confirm, the design will automatically recalculate, showing new inverter placements and connected parts of arrays. You can change positioning of inverters in positioning section.

The inverter change affects numerous design aspects, such as losses or initial costs. Compare different components and their effects on system to identify best solution for your case.

Inverter connection parameters

Available settings	Inverter load definition Desired DC/AC ratio Connect leftover strings

By default, inverter load definition is determined by DC/AC ratio. You can change and define it by stating number of strings connected to an inverter instead. Your selection will affect a total number of inverters used in the design and their load.

Select inverter load definition and adjust parameter below.
View DC/AC ratio range. Use this histogram to determine if there is a need to optimize the DC/AC ratio.
Choose how to connect leftover strings in design.

Leftover strings connection types
auto	The system will find the best solution to achieve the desired DC/AC ratio.
unconnected	Tables will become greyed out as disconnected with the potential to connect them - this will also maintain the desired DC/AC ratio.
to the last existing inverter	Use if only a few strings are left disconnected at the end of the array. This will increase the DC/AC ratio of that last inverter unit.
to additional inverter	Use if there are too many disconnected strings at the end of the array to be connected to the last unit. A new inverter unit will be added. This unit will have a lower DC/AC ratio.

Inverter positioning

Available settings	Inverter position Front/back offset Side offset Installation height Safe zone (standalone only)

By default, we place inverters in the design under the tables. You can change it to standalone, and inverters will be placed outside the array field. This can be particularly useful when you want the inverters to be grouped in one place for better accessibility and maintenance.

Under the tables

Set the inverter positioning to “Under the table” (default).
Set the front/back and side offsets as required. These will set the inveter’s distance from surrounding objects.
Set the inverter installation height. Zero means it can be installed close to the ground.

Standalone positioning

Set the inverter positioning to “Standalone” (default).
Set the safe zone as required. These will set the inverter’s distance from surrounding objects.
Check/uncheck the box to enable/disable placing inverters in the restricted areas.

If you permit the installation of inverters in restricted areas, each restricted area will have its own settings to enable or disable inverter placement, further expanding your placement options.

Connecting inverters to inverter transformer

The system adds a new inverter transformer to every new array added to the design. If this is not what your installation requires, you can change it in the electric layout section or upon creating the array.

For example, your design consists of two arrays with default inverter and transformer setups, but your location allows only a single inverter transformer placement. Connect the inverter setup to the first transformer and delete the other to achieve the required design.

Select the inverter transformer from the list.
The inverter setup will be moved under the selected inverter transformer.

Additionally, you can change the connection using the three-dot options menu of the inverter setup in the main menu. Here, you can rename it, set all its parameters to default in bulk, or delete it.