Simplified Second-Order Generalized Integrator - Frequency-Locked Loop

Extended Range Second Order Digital Phase Locked Loop

Phase error dynamics of a conventional second order Digital Phase Locked Loop (DPLL) and that of a newly proposed modified second order DPLL (MSODPLL) have been studied using digital computers. Ranges of initial conditions leading to the phase locking condition were determined from computer simulation of both conventional and modified second order DPLL. Lyapunov exponents were also examined, fo...

A Digital Integrator for an S-band High-speed Frequency-hopping Phase-locked Loop

Phase-locked loop (PLL) frequency synthesizers used for high-speed data transmission must rapidly hop and lock to new frequencies. The fundamental problem is that the settling time depends inversely on the loop bandwidth, and increasing the bandwidth causes unwanted noise interference and stability problems for the circuit. We demonstrate the feasibility of replacing the analog integrator in th...

a novel method for estimation of the fundamental parameters of distorted single phase signals

this paper proposes a new method for parameter estimation of distorted single phase signals, through an improved demodulation-based phase tracking incorporated with a frequency adaptation mechanism. the simulation results demonstrate the superiority of the proposed method compared to the conventional sogi (second-order generalized integrator)-based approach, in spite of the dc-offset and harmon...

Modeling and Simulation of Second-order Phase-locked Loop for Studying the Transient Behavior during Frequency Acquisition and Tracking

The Phase-Locked Loop (PLL) system is used extensively in modern electronic systems such as modems, mobile communications, satellite receivers and television systems. This work presents a method for modeling and simulation of second-order PLL in time domain to study transient behavior during frequency acquisition and tracking. Here we utilize a basic PLL system that consist a multiplier, used a...

Grid-voltage Synchronization Algorithms Based on Phase-locked Loop and Frequency-locked Loop for Power Converters