A Grid Synchronization PLL Method Based on Mixed Second- and Third-Order Generalized Integrator for DC Offset Elimination and Frequency Adaptability

Zhang, Chunjiang; Zhao, Xiaojun; Wang, Xiaohuan; Chai, Xiuhui; Zhang, Zhe; Guo, Xiaoqiang

doi:10.1109/jestpe.2018.2810499

Cited by 180 publications

(81 citation statements)

References 24 publications

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“…References testify that solution is possible to find at the new layer on conditions mentioned above [16]. The stability condition of the difference scheme is worthy to mention: δ/ξ 2 < D0/2.…”

Section: Stationary Solution Of Equationmentioning

confidence: 88%

Methodology for Assessing Synchronization Conditions in Telecommunication Devices

Boiko¹,

Pyatin²,

Eromenko³

et al. 2020

Adv. sci. technol. eng. syst. j.

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This paper represents analysis of principles providing maximally reliable delay estimation of signal synchronization devices in telecommunication. Clock synchronization schemes on the base of stochastic models, graph-analytic interpretation, analytical functional description and their parameters selection in case of real complex hindrance are analyzed. Dependences between dispersion of maximally reliable estimation of synchronization devices and signal to noise ratio (SNR) are represented. Analytical expressions and dependences are obtained for deviation of synchronization error with respect to SNR at the output of discriminator. Diagrams of state are formed for assessment of digital synchronization device in case of error state. Calculated error of numerical solution of the equation of a stationary grid method. We obtain the schedule of the distribution of the probability density synchronization errors for different values of the normalized time. The functions performed by the symbolic synchronization circle, features of the construction of the timing error detector (TED) are analyzed. The Gardner, Early-Late, Mueller & Muller TED, their error and the S-curve equation are investigated. The dependence of the relative timing error on the SNR is obtained. The article examines the effects of interpolation and decimation conditions in the forming filters of digital communication systems.

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Section: Stationary Solution Of Equationmentioning

confidence: 88%

Methodology for Assessing Synchronization Conditions in Telecommunication Devices

Boiko¹,

Pyatin²,

Eromenko³

et al. 2020

Adv. sci. technol. eng. syst. j.

View full text Add to dashboard Cite

show abstract

“…The system controller is modified the second-order generalized integrator PLL (SOGI-PLL) for the proposed power converter. It has proven to be robust against harmonics and voltage distortion [29,30]. The command of the dc-link voltage controller is taken as the amplitude of the ac utility grid current.…”

Section: G Prigmentioning

confidence: 99%

A generalized switching function-based SVM algorithm of single-phase three-leg converter with active power decoupling

Srirattanawichaikul

2020

IJECE

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In this paper, a generalized switching function-based space vector modulation (SVM) algorithm is presented and evaluated to minimize the dc voltage utilization and the ac utility grid current total harmonic distortion. This paper explores the control and modulation techniques of a single-phase three-leg converter with an active power decoupling method, where a generalized SVM algorithm is proposed and evaluated for easy implementation in a digital control platform. The active power decoupling method with the proposed converter can be achieved via dependent control and modulation techniques. The control method is separated into the ac active power control part and the dc power ripple control part, which can maintain a unity power factor at the ac utility grid and reduced the double-frequency ripple power effect on the dc-side. Simulation results validate the performance of the modulation algorithm and its control and demonstrate the feasibility of the proposed power converter, as well as the two mentioned operation modes of the power converter.

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“…These schemes depend on the model of [34]. To reduce the effect of grid voltage dc offset in SOGI, a mixed second and third-order generalized integrator phase-locked loop is proposed in [35]. The available controllers are based on pulse width modulated (PWM) inverter, where output harmonic distortion affects the performance of controller [36].…”

Section: Introductionmentioning

confidence: 99%

Frame-Angle Controlled Wavelet Modulated Inverter and Self-Recurrent Wavelet Neural Network-Based Maximum Power Point Tracking for Wind Energy Conversion System

et al. 2020

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In this work, a new control methodology is proposed for Type-IV wind energy conversion system (WECS) using a self-recurrent wavelet neural network (SRWNN) control with a Vienna rectifier as the machine side converter (MSC). A SRWNN combines excellent dynamic properties of recurrent neural networks and the fast convergence speed of wavelet neural network. Hidden neurons of SRWNN contains local self-feedback loops, which provide the memory feature and the necessary information of past values of the signals, allowing it to track maximum power from WECS under varying wind speeds. The Vienna rectifier allows unity power factor operation to increase electrical efficiency. Frame angle-controlled wavelet modulation is proposed for the grid side converter (GSC). Wavelet modulated inverter produces output voltage fundamental components with higher magnitudes than those obtained from the pulse width modulated inverters. The non-linear load compensation and power quality enhancement are achieved by executing frame angle control for WM inverter. The overall system is modeled, and performance is verified in MATLAB Simulink. The hardware prototype is developed, and the switching pulses for the rectifier and inverter are generated using dSPACE1104 controller. The results prove that the system provides low harmonic content and high magnitude of the fundamental current component at the machine and grid sides and ensures maximum power operation at various wind speeds. INDEX TERMS Wind Energy Conversion System (WECS), Wavelet modulation (WM), Maximum power point tracking (MPPT), Self recurrent wavelet neural network (SRWNN)

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A Grid Synchronization PLL Method Based on Mixed Second- and Third-Order Generalized Integrator for DC Offset Elimination and Frequency Adaptability

Cited by 180 publications

References 24 publications

Methodology for Assessing Synchronization Conditions in Telecommunication Devices

Methodology for Assessing Synchronization Conditions in Telecommunication Devices

A generalized switching function-based SVM algorithm of single-phase three-leg converter with active power decoupling

Frame-Angle Controlled Wavelet Modulated Inverter and Self-Recurrent Wavelet Neural Network-Based Maximum Power Point Tracking for Wind Energy Conversion System

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