Novel Modified Elman Neural Network Control for PMSG System Based on Wind Turbine Emulator

Figure 13

Experimental results of PMSM direct-driven PMSG system using the conventional NN controller for the Δ connection three-phase loads of 18Ω with 𝜔_𝑟=209.3 rad/s (𝑛_𝑟=2000rpm) at case 3: (a) rotor speed 𝜔_𝑟(𝑛_𝑟); (b) adjusting response of step desired magnitude 𝑉^∗_𝑑 of the DC bus voltage and actual measured magnitude 𝑉_𝑑 of the DC bus voltage in output end of the rectifier; (c) adjusting response of step desired root-mean-square magnitude 𝑉^∗_rms of the AC 60 Hz line voltage and actual measured root-mean-square magnitude 𝑉_rms of the AC 60 Hz line voltage in output end of the inverter 𝑉_rms; (d) tracking response of the desired phase current 𝑖^∗_𝑎𝑖 and actual measured phase current 𝑖_𝑎𝑖 in phase ai of the inverter.

(a)

(b)

(c)

(d)