modelInverter1phOpenSynch
Extends from Modelica.Icons.Example (Icon for runnable examples).
Information
This example goes a step further than Inverter1phOpen and includes grid synchronization. Typically this is the condition for inverters in real-life situations. Both switched and averaged implementations are presented for comparison purposes and it can be seen that they both provide very similar results (excluding the fact that high frequencies are left out in the averaged model).
Since this is still open-loop and there's no in-quadrature separation, the value of the current can't comfortably be specified to be of a certain value. Since the RL load has almost equal real and imaginary parts, the current that is drawn from the inverter has a power factor different than one.
A key value to pay attention to in this example is the gain that is placed in the Add block.
It's initially set at 0.5. The value is expressed as 580/580/2 to highlight the fact that this gain should be normalized to the DC voltage value. Above that, over-modulation will occur and the output current of the inverter will become quite ugly. Play around with this value (using values between 0 and 0.5) to see how the output current of the inverter changes.