Description of Nodal Data Parameters
| Parameter | Units | Description |
|---|---|---|
| Timestamp | yyyy-MM-dd HH:mm:ss | Date and time for the calculation timestep |
| DC Voc | V | Open circuit voltage of all DC fields connected to the inverter input |
| DC Voltage at MPP | V | DC voltage at maximum power point from all connected DC fields, before inverter operating point adjustment |
| DC Current at MPP | A | DC current at maximum power point from all connected DC fields, before inverter operating point adjustment |
| DC Power at MPP | W | DC power at maximum power point from all connected DC fields, representing the theoretical maximum available DC power |
| DC Voltage | V | Final DC operating voltage at the inverter input after operating region and clipping adjustments |
| DC Current | A | Final DC operating current at the inverter input after operating region and clipping adjustments |
| DC Power | W | Final DC power at the inverter input, calculated as DC Voltage × DC Current |
| Inverter Efficiency | — | Ratio of AC power output to DC power input, determined from the inverter efficiency curve at the operating power level |
| Inverter Limitation | W | Power loss due to inverter operating outside the maximum power point, including DC voltage window limitations and power clipping |
| AC Power | W | AC power output from the inverter after efficiency losses and any clipping |
| Inverter Region MPP | — | Initial inverter operating region determined from the maximum power point DC voltage and power |
| Inverter Region final | — | Final inverter operating region after adjustments for voltage window and power limitations |
| Design Derate | — | Power factor or design derate applied to inverter output |
| AC Power Limit Input | W | AC power limit value provided as input to the inverter model |
| AC Power Limit Final | W | Final AC power limit applied after considering all constraints, reflects actual curtailment or clipping applied |