Hello,
1. Yes. SAM's HCPV model assumes that the tracker is 2-axis with no limits to the extent of its rotation.
2. The model makes no assumptions about the type of concentrator. You provide the concentration ratio with loss factors to describe its optical characteristics.
3. The input radiation is a value SAM reports for reference. It is not used to calculate the system's output. It is calculated as
Input Radiation = DNI (W/m2) * Module Area (m2) * Number of Modules per Tracker * Number of Trackers / 1000 (W/kWh)
. The POA on cell value is the irradiance incident on the cell adjusted by air mass modifier, soiling, shade derate, optical error and alignment error.
4. No. The default values are a starting point for your analysis, and are not based on a specific system.
5. To model a commercially-available collector in SAM, you will need data from an efficiency curve from the manufacturer or another source.
Best regards,
Paul.