Journal ArticleDOI
A novel three-phase magnitude-phase-locked loop system
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TLDR
A novel three-phase magnitude-phase-locked-loop system for use in the general area of three- phase (power, energy and power electronic) systems is introduced and three unique features of such a filter are frequency adaptivity, unbalance mitigation, and structural simplicity/robustness.Abstract:
A novel three-phase magnitude-phase-locked-loop system (3MPLL) for use in the general area of three-phase (power, energy and power electronic) systems is introduced. The proposed 3MPLL suppresses the noise and distortion from the input signal, mitigates the unbalance, and synthesizes the instantaneous positive-sequence component of the input signal; thus it operates as a nonlinear adaptive notch (or band-pass) filter. The 3MPLL also adaptively tracks and estimates the magnitude, phase angle, and frequency of the input signal; thus, its operation as a nonlinear state estimator. Characteristics of the 3MPLL including its mathematical equations as well as steady-state and dynamic responses are discussed in this paper. Comparisons are made between the proposed 3MPLL and conventional single-phase PLL (1PLL) and three-phase PLL (3PLL) systems. Advantages of the proposed system over the conventional methods and systems are also discussed. Structural simplicity and robustness of the 3MPLL system are its further features which make it desirable. In addition to the conventional applications of the 3PLL in the general area of power systems, the proposed 3MPLL can also be used for other applications which require smooth and adaptive synthesis of the instantaneous symmetrical components. Particularly, the 3MPLL can be used as a three-phase nonlinear anti-aliasing filter with no phase-shift and no amplitude bias. Three unique features of such a filter are frequency adaptivity, unbalance mitigation, and structural simplicity/robustnessread more
Citations
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Journal ArticleDOI
Moving Average Filter Based Phase-Locked Loops: Performance Analysis and Design Guidelines
TL;DR: The paper presents two systematic methods to design the control parameters of a typical MAF-based PLL: one for the case of using a proportional-integral (PI) type loop filter (LF) in the PLL, and the other for the cases of using an proportional-Integral-derivative (PID) type LF.
Journal ArticleDOI
Addressing DC Component in PLL and Notch Filter Algorithms
TL;DR: In this paper, the dc component in the input signal of the phase-locked loop (PLL) and notch filter algorithms applied to filtering and synchronization applications is addressed, based on adding a new loop inside the PLL structure.
Journal ArticleDOI
A Nonlinear Adaptive Synchronization Techniquefor Grid-Connected Distributed Energy Sources
TL;DR: In this article, a new adaptive notch filtering (ANF) approach is introduced as a powerful tool for synchronization of converter-interfaced distributed generation systems that can potentially stimulate much interest in the field and provide improvement solutions for both grid-connected and stand-alone (islanding operation) modes of micro-grids.
Journal ArticleDOI
Application of Enhanced Phase-Locked Loop System to the Computation of Synchrophasors
TL;DR: In this paper, an enhanced phase-locked loop (EPLL) was used for the estimation of synchrophasors in a phasor measurement unit (PMU) under off-nominal frequency operation.
Journal ArticleDOI
A Generalized Delayed Signal Cancellation Method for Detecting Fundamental-Frequency Positive-Sequence Three-Phase Signals
TL;DR: In this article, the fundamental-frequency positive-sequence grid voltage vector based on a generalization of the delayed signal cancellation method is proposed, which is implemented by sampling and storing the instantaneous αβ voltage vector.
References
More filters
Book
Control of Electrical Drives
TL;DR: In this paper, the authors describe the motion of a drive with Lumped Inertia and two Axes Drive in Polar Coordinates, and the integration of the simplified Equation of Motion.
Journal ArticleDOI
A phase tracking system for three phase utility interface inverters
TL;DR: In this article, the phase tracking system of the three phase utility interface inverters is investigated in both continuous and discrete-time domains, and the optimization method is considered for the second order PLL system.
Journal ArticleDOI
Operation of a phase locked loop system under distorted utility conditions
TL;DR: In this article, a phase-locked loop (PLL) system under distorted utility conditions is presented and a control model of the PLL system is developed and recommendations are made on tuning of this model specially for operation under common utility distortions such as line notching, voltage unbalance/loss, and frequency variations.
Journal ArticleDOI
Phase-locked loop techniques. A survey
Guan-Chyun Hsieh,J.C. Hung +1 more
TL;DR: A concise review of the basic PLL principles applicable to communication and servo control systems is provided, the configurations of PLL applications are given and a number of popular PLL chips are reported.
Journal ArticleDOI
A survey of digital phase-locked loops
William C. Lindsey,Chak Chie +1 more
TL;DR: A systematic survey of the theoretical/experimental work accomplished in the area of digital phase-locked loops (DPLL's) during the period of 1960 to 1980, thereby offering speedy access to the techniques and hardware developments which have been presented in a scattered literature.