VOLTAGE ORIENTED CONTROL – SIMULATION
SIMULATION 6 – LOAD STEP
Simulation 6 is done by modifying the load resistance from 150Ω to 30Ω, that corresponds, to a load asking suddenly for 16kW (30Ω) instead of 3kW (150Ω).
Figure 3.53 : Simulation6 results
The input power (blue) is calculated with the following equation (3.18) : 3
2 The output power (black) as below (equation (3.62)) :
As we can see in the previous figure (Figure 3.53), an overshoot appears in the d components of the current (6A overshoot). Nevertheless, this overshoot is not so visible on the 3 phase current.
Regarding the DC link voltage, we observe a small drop (5.5V, 0.7%). The controller is acting and after a couple of millisecond, the error is set to zero again. The controller performance seems to good for disturbance rejection.