Comparative analysis of lattice-based all-pass filter and second order generalized integrator as orthogonal system generator of a pll
| Autor: | Joan Gabriel Bergas-Jane, Nancy Alejandra Agudelo, Luciano Emilio Belandria |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Elèctrica, Universitat Politècnica de Catalunya. CITCEA - Centre d'Innovació Tecnològica en Convertidors Estàtics i Accionaments |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Computer science
Band-stop filter Orthogonal signal generator orthogonal signal generator Phase-locked loop Sampling (signal processing) Control theory Convertidors de corrent elèctric Electrical and Electronic Engineering MATLAB Second order generalized integrator Digital signal processing All-pass filter computer.programming_language Phase-locked loops Llaços de seguiment de fase business.industry Enginyeria elèctrica [Àrees temàtiques de la UPC] Filter (signal processing) Notch filter all-pass filter Electric current converters TK1-9971 notch filter second order generalized integrator Single-phase PLL Integrator phase-locked loop Generadors de senyal single-phase pll Electrical engineering. Electronics. Nuclear engineering business computer Signal generators |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Advances in Electrical and Electronic Engineering, Vol 19, Iss 1, Pp 1-15 (2021) |
| Popis: | This paper presents a steady-state comparison of two methods that generate an orthogonal voltage system for a single-phase Phase-Locked Loop (PLL) structure: a widely accepted one based on a Second Order Generalized Integrator (SOGI) and a new one based on a All-Pass Filter (APF) with Lattice structure. Both methods are very attractive because of their simple digital implementation, low computational load and good performance under harmonically distorted grid conditions and variable frequency, so they are a good alternative to other known methods. The paper derives and analyzes the full state space models of the two methods.It is shown that these two methods are equivalent in the most common operation conditions of distributed energy resources, although the APF structure is clearly better than the SOGI one because it maintains its orthogonal generation ability for any higher notch frequencies and any lower sampling frequencies. The comparative analysis were validated by simulation with MATLAB/Simulink and experimental results using a fixed-point DSP. |
| Databáze: | OpenAIRE |
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