VOLTAGE ORIENTED CONTROL – SIMULATION
¬ Grid voltage
(Line to Line) (Phase to Ground)
(Phase to Ground amplitude)
¬ Minimum DC link voltage The minimum DC link voltage is found with the equation (2.27) of section “2.2.3 Limitations”.
This minimum value have been verify in our simulation. In the Simulink simulation, we found a minimum DC link voltage around 660V. Finally, for our simulation we will select
This value is probably a bit low for an experiment. In reality, it will be better to select 15% or 20% more (about 750V or 790V. Refer to “2.2.3 Limitations”).
¬ Inductance value The equation (2.29) of section “2.2.3 Limitations” applied in our system becomes :
As we saw during the voltage controller design, section “3.5.2 Design of voltage controller”
equation (3.18), the d current is calculated by 2
Then, in steady state we can write the equality of power
Finally, the current becomes
This value is totally verified in the following simulation. We can now calculate the inductance.
We think that this value too high according to results read in some papers. We decided to select the inductance around 3mH (it could be 5mH or 10mH).