Table 11 Study of the effect of the amplitude value of fundamental signal (50 Hz) and THD value between the fourth and fifth tests for the two techniques.

From: Reducing power ripple for multi-rotor wind energy systems using FOPDPI controllers

 

DPC-FOPDPI-PWM

DPC-PI

THD (%)

Test 4

0.93

1.49

Test 5

0.14

0.21

Test 5–Test 4

− 0.79

− 1.28

Ratios (%)

− 84.95

− 85.1

Amplitude of fundamental

signal (50 Hz)

Test 4

210.30

210.40

Test 5

1676

1676

Test 5–Test 4

+ 1465.70

+ 1465.6

Ratios (%)

87.45

87.45