Journal ArticleDOI
A Comparative Analysis of Real-Time Algorithms for Power Signal Decomposition in Multiple Synchronous Reference Frames
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TLDR
In this paper, a rigorous analysis of the performance of these implementations has been carried out and complete tests have been performed to evaluate the computational burden, the frequency domain response, and the tolerance to low frequency amplitude variations.Abstract:
The monitoring and rejection of voltage and current harmonics in power electronics applications such as power quality conditioners or distributed generation systems require correct estimation algorithms especially if the harmonic amplitudes are time varying. Power signal decomposition in multiple synchronous rotating reference frames (MSRFs) is considered one of the best solutions. The most commonly employed implementations of this signal transformation are based on phase-locked loops (PLLs), recursive discrete Fourier transforms (RDFT), or discrete Kalman filtering (DKF). In this paper, a rigorous analysis of the performance of these implementations has been carried out. Complete tests have been performed to evaluate the computational burden, the frequency domain response, and the tolerance to low frequency amplitude variations. The results make it possible to select the proper method depending on the requirements of each application.read more
Citations
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Journal ArticleDOI
Multiresonant Frequency-Locked Loop for Grid Synchronization of Power Converters Under Distorted Grid Conditions
TL;DR: A new multiresonant frequency-adaptive synchronization method for grid-connected power converters that allows estimating not only the positive- and negative-sequence components of the power signal at the fundamental frequency but also other sequence components at other harmonic frequencies is presented.
Journal ArticleDOI
A Stationary Reference Frame Grid Synchronization System for Three-Phase Grid-Connected Power Converters Under Adverse Grid Conditions
Pedro Rodriguez,Alvaro Luna,R.S. Munoz-Aguilar,Ion Etxeberria-Otadui,Remus Teodorescu,Frede Blaabjerg +5 more
TL;DR: A new grid synchronization method for three-phase three-wire networks, namely dual second-order generalized integrator (SOGI) frequency-locked loop, based on two adaptive filters, is presented, able to perform an excellent estimation of the instantaneous symmetrical components of the grid voltage under unbalanced and distorted grid conditions.
Journal ArticleDOI
Three-Phase PLLs: A Review of Recent Advances
TL;DR: A phase-locked loop (PLL) is a nonlinear negative feedback control system that synchronizes its output in frequency as well as in phase with its input PLLs are now widely used for the synchronization of power-electronics-based converters and also for monitoring and control purposes in different engineering fields as mentioned in this paper.
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
Autonomous Control of Inverter-Interfaced Distributed Generation Units for Harmonic Current Filtering and Resonance Damping in an Islanded Microgrid
TL;DR: In this article, the authors proposed a load compensator based on the decomposition of output current, in addition to the outer droop-based power controller and the inner voltage and current controllers, which can counteract the harmonic voltage drops across the grid-side inductance of the DG inverter and dampen out harmonic resonance propagation in the microgrid.
References
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Journal ArticleDOI
Overview of Control and Grid Synchronization for Distributed Power Generation Systems
TL;DR: An overview of the structures for the DPGS based on fuel cell, photovoltaic, and wind turbines is given and the possibility of compensation for low-order harmonics is discussed.
Book
Digital Signal Processing: Principles, Algorithms, and Applications
TL;DR: This paper presents a meta-analysis of the Z-Transform and its application to the Analysis of LTI Systems, and its properties and applications, as well as some of the algorithms used in this analysis.
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Analysis of electric machinery and drive systems
TL;DR: Theory of brushless dc motors and dc machines is discussed in this article, where the authors present a general framework for electric machine analysis based on basic principles for Electric Machine Analysis.
Book
Understanding Power Quality Problems: Voltage Sags and Interruptions
TL;DR: This is the first book to offer in-depth analysis of voltage sags and interruptions and to show how to apply mathematical techniques for practical solutions to these disturbances.
Journal ArticleDOI
Stationary frame current regulation of PWM inverters with zero steady-state error
D.N. Zmood,Donald Grahame Holmes +1 more
TL;DR: In this article, the P+Resonant regulator is proposed, which achieves the same transient and steady-state performance as a synchronous frame PI regulator and is applicable to both single-phase and three-phase inverters.