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Current(Amps)<br />

Voltage(V)<br />

Voltage(V)<br />

Current(Amp)<br />

Comparison Of UPS Inverter Using PI Controller And NN Controller<br />

8<br />

6<br />

4<br />

2<br />

0<br />

-2<br />

-4<br />

-6<br />

-8<br />

0 0.02 0.04 0.06 0.08 0.1 0.12<br />

Time(Sec)<br />

30<br />

20<br />

10<br />

0<br />

-10<br />

-20<br />

-30<br />

0 0.02 0.04 0.06 0.08 0.1 0.12<br />

TIme(Sec)<br />

Fig.5 Inverter output current and voltage with PI controller<br />

40<br />

30<br />

20<br />

10<br />

0<br />

-10<br />

-20<br />

-30<br />

-40<br />

0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08<br />

Time(Sec)<br />

4<br />

3<br />

2<br />

1<br />

0<br />

-1<br />

-2<br />

-3<br />

-4<br />

0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08<br />

Time(Sec)<br />

Fig 6 Inverter output voltage and current with change in load from no-load to full load with neural<br />

network controller<br />

www.<strong>ijcer</strong>online.com ||May ||2013|| Page 95

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