Virtual quadrature‐coordinate EPLL for single‐phase grid information synchronisation. Issue 2 (1st January 2019)

• Record Type: Journal Article
• Authors: Wang, Guizhong; Wu, Fengjiang
• Is Part Of: Electronics letters. Volume 55:Issue 2(2019)
• Page Start: 109
• Page End: 111
• Publication Date: 2019-01-01
• Subjects: phase locked loops -- synchronisation -- transient response; virtual quadrature‐coordinate EPLL -- single‐phase grid information synchronisation -- transient response -- single‐phase enhanced PLL -- phase angle -- transient periodic ripples -- standard EPLL -- second‐order generalised integrator -- dynamic performance; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2018.7083
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : The transient response of the single‐phase enhanced PLL (EPLL) under the step change of amplitude, phase angle, and frequency is derived. It is revealed that there are transient periodic ripples in the estimation results of the standard EPLL. Furthermore, a virtual quadrature‐coordinate EPLL combining a second‐order generalised integrator with a quadrature‐coordinate EPLL is proposed and the transient response is derived. The proposed EPLL possesses a better dynamic performance than the standard EPLL. The detailed experimental results are shown and compared with each other to validate the theoretical analysis and the advantages of the proposed EPLL.