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Predictive Control of Three Phase AC/DC Converters

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3.6. SIMULATION RESULTS 37<br />

200<br />

150<br />

100<br />

50<br />

(a)<br />

500<br />

400<br />

300<br />

200<br />

100<br />

(c)<br />

u P a<br />

u La<br />

0.095 0.1 0.105 0.11 0.115 0.12 0.125 0.13 0.135<br />

0<br />

−50<br />

−100<br />

−150<br />

0<br />

−100<br />

−200<br />

−300<br />

−400<br />

−200<br />

0.095 0.1 0.105 0.11 0.115 0.12 0.125 0.13 0.135<br />

15<br />

10<br />

(b)<br />

−500<br />

(d)<br />

2500<br />

P Q<br />

2000<br />

i La<br />

0.095 0.1 0.105 0.11 0.115 0.12 0.125 0.13 0.135<br />

5<br />

1500<br />

0<br />

1000<br />

−5<br />

500<br />

−10<br />

0<br />

−15<br />

0.095 0.1 0.105 0.11 0.115 0.12 0.125 0.13 0.135<br />

−500<br />

Figure 3.26: Transient operation <strong>of</strong> ST-DPC power step change from 1 kW to<br />

2 kW: (a) line voltage u La [V], (b) line current i La [A], (c) VSC input voltage<br />

u P a [V], (d) referenced and measured active P [W] and reactive power Q [var]<br />

2500 (a)<br />

P Q<br />

2000<br />

2500 (b)<br />

2000<br />

500 (c)<br />

400<br />

300<br />

u P a<br />

P Q DPC-SVM 0.105 0.106 0.107 0.108 0.109 0.11 0.111 0.112 0.113 0.114<br />

1500<br />

1000<br />

500<br />

0<br />

1500<br />

1000<br />

500<br />

0<br />

200<br />

100<br />

0<br />

−100<br />

−200<br />

−300<br />

−400<br />

−500<br />

−500<br />

0.105 0.106 0.107 0.108 0.109 0.11 0.111 0.112 0.113 0.114<br />

2500<br />

0.105 0.106 0.107 0.108 0.109 0.11 0.111 0.112 0.113 0.114<br />

2500<br />

ST-DPC<br />

−500<br />

500<br />

2000<br />

1500<br />

1000<br />

500<br />

0<br />

2000<br />

1500<br />

1000<br />

500<br />

0<br />

400<br />

300<br />

200<br />

100<br />

0<br />

−100<br />

−200<br />

−300<br />

−400<br />

−500<br />

0.105 0.106 0.107 0.108 0.109 0.11 0.111 0.112 0.113 0.114<br />

−500<br />

−500<br />

0.105 0.106 0.107 0.108 0.109 0.11 0.111 0.112 0.113 0.114 0.105 0.106 0.107 0.108 0.109 0.11 0.111 0.112 0.113 0.114<br />

Figure 3.27: Transient operation <strong>of</strong> DPC methods step change <strong>of</strong> referenced<br />

active power P ref from 1 kW to 2 kW in zoom: (a) referenced and measured<br />

active P [W] and reactive power Q [var], (b) sampled referenced and measured<br />

active P [W] and reactive power Q [var], (c) VSC input voltage u P a [V]

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