ABSTRACT To address the challenges presented by nonideal grid voltage situations, an innovative method using a phase‐locked loop (PLL) based on a dual‐quadrature signal generator (D‐QSG) has evolved. Precise parameter selection for the D‐QSG–based controller is still very challenging, especially for higher‐order systems, and it often results in higher settling times that affect the attenuations of both amplitude and harmonics. Therefore, in order to get faster responses, this research brings great emphasis on parameter optimization. Precisely chosen conditions enable fast enveloping around the 2% settling time barrier, reached in 24.4 ms, by building a fourth‐order quasi‐synchronous generator by the integration of two nonidentical second‐order generalized integrators (NISOGIs). This approach encourages closer proximity between the fourth‐order transfer function's poles, which accelerates response times overall. When this technology was used to an electric vehicle (EV) charger in scenarios including voltage sag/swell and harmonics, it functioned efficiently. The EV charger was able to adjust for harmonics in the load and together handle its generation of active and reactive power in line with specified parameters. The efficiency of this strategy was proven by performing real‐time investigations utilizing the OPAL‐rt platform and MATLAB/Simulink simulations.
Gaurav Kumar Yadav (Tue,) studied this question.