An Adaptive Synchronous-Reference-Frame Phase-Locked Loop for Power Quality Improvement in a Polluted Utility Grid

González-Espín, Fran; Figueres, E.; Garcerá, G.

doi:10.1109/tie.2011.2166236

Cited by 265 publications

(126 citation statements)

References 43 publications

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“…A major challenge of PLLs is how to quickly and accurately estimate the phase angle and frequency when the grid voltage is distorted. To overcome this challenge, combining filtering techniques into the structure of PLLs has been proposed in the literature [13][14][15][16][17][18][19][20][21][22][23][24]. Reference [14] used a double, or more synchronous reference frame (DSRF/MSRF), to realize the decoupling between the fundamental negative sequence and the positive sequence components, and then locking the phase angle by extracting the fundamental positive sequence component, which can realize a fast and dynamic response.…”

Section: Introductionmentioning

confidence: 99%

Frequency-Adaptive Modified Comb-Filter-Based Phase-Locked Loop for a Doubly-Fed Adjustable-Speed Pumped-Storage Hydropower Plant under Distorted Grid Conditions

2017

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Abstract:The control system of a doubly-fed adjustable-speed pumped-storage hydropower plant needs phase-locked loops (PLLs) to obtain the phase angle of grid voltage. The main drawback of a comb-filter-based phase-locked loop (CF-PLL) is the slow dynamic response. This paper presents a modified comb-filter-based phase-locked loop (MCF-PLL) by improving the pole-zero pattern of the comb filter, and gives the parameters' setting method of the controller, based on the discrete model of MCF-PLL. In order to improve the disturbance resistibility of MCF-PLL when the power grid's frequency changes, this paper proposes a frequency-adaptive modified, comb-filter-based, phase-locked loop (FAMCF-PLL) and its digital implementation scheme. Experimental results show that FAMCF-PLL has good steady-state and dynamic performance under distorted grid conditions. Furthermore, FAMCF-PLL can determine the phase angle of the grid voltage, which is locked when it is applied to a doubly-fed adjustable-speed pumped-storage hydropower experimental platform.

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Section: Introductionmentioning

confidence: 99%

Frequency-Adaptive Modified Comb-Filter-Based Phase-Locked Loop for a Doubly-Fed Adjustable-Speed Pumped-Storage Hydropower Plant under Distorted Grid Conditions

2017

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“…The grid current should follow the fundamental positive sequence component of the grid voltage with a preset current value. That's why so many phase-locked loops have been proposed in recent years [10][11][12][13][14][15][16][17]. In [10], a method for extracting the fundamental frequency positive-sequence voltage was proposed based on the simple mathematical transformations.…”

Section: Introductionmentioning

confidence: 99%

“…Another interesting method in [11] utilized the decoupled double synchronous reference frame phase-locked loop. An improvement in [12] used an adaptive synchronous reference frame phaselocked loop. A multiple reference frame based phaselocked loop was reported in [13] to extract the fundamental positive sequence component of the grid voltage.…”

Section: Introductionmentioning

confidence: 99%

Abc-frame complex-coefficient filter and controller based current harmonic elimination strategy for three-phase grid connected inverter

Guo

Guerrero

2016

J. Mod. Power Syst. Clean Energy

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Current quality is one of the most important issues for operating three-phase grid-connected inverter in distributed generation systems. In practice, the grid current quality is degraded in case of non-ideal utility voltage. A new control strategy is proposed for the three-phase gridconnected inverter. Different from the traditional method, our proposal utilizes the unique abc-frame complex-coefficient filter and controller to achieve the balanced, sinusoidal grid current. The main feature of the proposed method is simple and easy to implement without any frame transformation. The theoretical analysis and experimental test are presented. The experimental results verify the effectiveness of the proposed control strategy.

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“…Various synchronization techniques have been proposed in literatures. The zero crossing detection methods [3], the space-vector filtering (SVF) method [4], the artificial neural networks (ANN) method [5], the recursive weighted least-squares estimation (WLSE) algorithm [6], the discrete Fourier transform (DFT) and its modifications [7], the methods based on the concept of adaptive notch filtering (ANF) [8], the Kalman filtering technique [9], the frequency-locked loop (FLL) methods [10], three phase open-loop phase-locked method [11] and the phase-locked loop (PLL) algorithms [12,13] are among the existing synchronization techniques.…”

Section: Introductionmentioning

confidence: 99%

A New PLL Simulation Validation for Three-phase Grid under Heavy Distorted Conditions

Long

Sun²

2015

Int. J. Onl. Eng.

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Abstract-The precision of phase-locked loop (PLL) has a direct effect on the output performance for three-phase grid-connected inverter or three-phase active PFC. In this paper, a new three-phase digital closed-loop phase-locked algorithm is proposed on the basis of synchronous reference frame transformation. Synchronous simulation of the PLL techniques is a good choice even if the polluted three-phase grid such as the harmonics, phase jump and unbalance. Finally, MATLAB digital simulation results prove that the proposed PLL can fast and accurately track the positive sequence fundamental components of three-phase grid voltage.

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An Adaptive Synchronous-Reference-Frame Phase-Locked Loop for Power Quality Improvement in a Polluted Utility Grid

Cited by 265 publications

References 43 publications

Frequency-Adaptive Modified Comb-Filter-Based Phase-Locked Loop for a Doubly-Fed Adjustable-Speed Pumped-Storage Hydropower Plant under Distorted Grid Conditions

Frequency-Adaptive Modified Comb-Filter-Based Phase-Locked Loop for a Doubly-Fed Adjustable-Speed Pumped-Storage Hydropower Plant under Distorted Grid Conditions

Abc-frame complex-coefficient filter and controller based current harmonic elimination strategy for three-phase grid connected inverter

A New PLL Simulation Validation for Three-phase Grid under Heavy Distorted Conditions

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