3 shokoohi@ieee.org shokoohi@ieee.org j.moshtagh@uok.ac.ir bevrani@ieee.org. (DGs) -. DG.. DG DC.. DG...[4] [3]. : (PCC).[5] 3..(DG) (VSI) - -...[3]. ( ) :.[] (DG) -.[].

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RQ PR δ =, V V = V V (5) (6) (6). (5). = k ( P P ) 0 p 0 V V = k ( Q Q ) s s0 q 0 (8). : (7) (7) (8). 3 (8) (7)..[0] IIDG (9) R ' P P (9) ' = Q R Q ( K = R ) R / (9) (8) (7). K K K = P P + V + Q K K K ' R V R 0 s 0 K K K V = Q Q P ' R R s 0 0 K V KV K V V (0) (). (0 3 ) ( ) (VSI).[4]. IIDG.[5] [4] IIDG. IIDG. -3. L V P = cosθ L cos( θ + δ ) V Q = sinθ L sin( θ + δ ) :[9] S j () () e θ = R + j P = R ( VLcosδ ) + VLsinδ R + Q = RV Lsinδ + VLcos R + () (). (4) (3) K = / k, K = / k p V q. IIDG. :3 ( δ ) (4) (3) (>>R) P Q δ =, V V = V V (3) (4) : (4) (3) (<<R) (5) : 3

0 V c = Asin( πt) A V K K V K K v P 0 P' ω c s + ωc Q ' ω c s + ωc p q Vo Q 0 IIDG :4. :5. IIDG IIDG. :7 :6 t=0.5s.[] 703.( ) IIDG : 30 µ F C 380 vrms V L - L 5Ω rc 50 Hz 3mH L 30 kva Lc Pnom 0.Ω r 4 khz Lc s -.06 K 6mH L -00 K 0.Ω v r IIDG () (0). 4. IIDG. 4 5 6.. IIDG. IIDG - -4 IIDG. IIDG. IIDG. 7 PCC 37.. 775 IEEE. 8 4

- PCC. IIDG.. -. IIDG 0. RMS. (PI).. -0/0 0/004. PCC. IIDG.. IIDG.. 735 79 7 799 70 74 705 73 704 70 744 77 703 78 730 736 70 73 734 733 737 708 738 30 kv 4.8 kv 709 775 70 4.8 kv 0.4 kv 7 73 740 74 74 78 7.IEEE 37 :8. IIDG :9 9 IIDG 707 706 75 74.. ( ) IIDG. 3 IIDG. PCC -5.[4] IIDG 9 5

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