Dynamic response enhancement of BDFIG using vector control scheme based internal model c ontrol

Abstract

Doublefed induction generator(DFIG) has shown tremendous success inwind turbines due to its flexibility and ability to regulate the active andreactive power. However, the presence of brushes and slip rings affects itsreliability, stability, and power quality. Furthermore, itdoes not providepromising outcomes in case of faults even in presence of the crowbar circuit.In contrast, thebrushless doubly fed induction generator(BDFIG) is a morereliable option for wind turbines than its mentioned counterpart due to theabsence of the brushes and slip rings. This research work as such attempts toimprove the dynamic performance of thevector control(VC)oriented powerwinding (PW) stator flux-based BDFIG by optimally selecting theproportional-integral(PI) gains throughinternalmodel control(IMC)approach. The proposed control scheme is utilized to regulate the speed,torque, and reactive power of the considered BDFIG independently. Contraryto the previous literature where the “trial and error method” is generallyutilized, the current research work uses the IMC for selecting the mostsuitable PI parameters, thus reduces the complexity, time consumption, anduncertainty in optimal selection. The considered BDFIG based wind turbinewith the proposed control scheme provides a better BDFIG control designwith an enhanced dynamic response as compared to that of the same withDFIG under identical operating conditions and system configurations.

Performance Investigation of Wind Turbine Induction Generators connected with a Single-Area Power System

“…The dynamic model of the induction generator in (d-q) frame which included the stator and rotor fluxes, voltages current is [2,3]: where: 𝜔 𝑠 is speed of synchronously and 𝜔 = 𝑝𝜔 𝑚 .…”

Intensifications reactive power during of asymmetric network outages in dual-stator winding generators

“…The impact of escalation wind farms penetrating due to the remarkable success in supporting green clean energy during the recent years provided serious cooperation with different resources to achieve an integrated and stable power generation system [1]- [3]. The urgent need for a reliable protection system to protect (turbo generators) from the potential symmetrical and asymmetrical fault that occurs in the distribution network become under the process of study and evaluations [4], [5].…”