Table 3 Parameters of the RSC and GSC controller.

K_p1, K_i1

6, 10

Proportional and integral coefficient of the RSC outer active power loop

K_p2, K_i2

0.4, 20

Proportional and integral coefficient of the RSC outer reactive power loop

K_p3, K_i3

0.23, 10

Proportional and integral coefficient of the RSC inner current loop

K_p4, K_i4

8, 400

Proportional and integral coefficient of the GSC outer dc voltage loop

K_p5, K_i5

1, 5

Proportional and integral coefficient of the GSC inner current loop