Direct Power and Torque Control of AC/DC/AC Converter-Fed ...

6. Simulation and Experimental Results
6.3. Active and Reactive Power Controllers
Controller design verification has been done for the same condition as in
simulation presented in Section 3.3.3.1. However, it should be note that during
command reactive line power step command active line power is set to 1kW. The
active and reactive power controller syntheses as well as analysis were done
according to symmetry optimum – SO.
In Fig. 6. 5 is presented active power steps response at different sampling
frequency. From this figure can be seen similarities with simulated result shown in
Fig. 3. 29 and Fig. 3. 30.
Fig. 6. 5. Experimental active and reactive power tracking performance at different sampling
frequency: f s
= 2.
5kHz
a) active power step, and b) reactive power step;
f s
= 5Hz c) active power step, and d) reactive power step.
From the top: command and actual active power 0.5kW/div, command and actual reactive power
0.5kVar/div
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