Control of single-phase AC/DC converter based on SOGI-PLL voltage synchronization

Blahník, Vojtĕch; Košan, Tomáš; Talla, Jakub

doi:10.1109/mechatronika.2014.7018337

Cited by 14 publications

(5 citation statements)

References 6 publications

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“…A single phase-locked loop (PLL) based on a standard quadrature signal generator (QSG) is used to synchronize the grid and the converter and also obtain the grid side voltage magnitude [ 20 , 21 ]. The second order generalized integrator (SOGI) PLL is utilized for its resilience to grid voltage harmonics.…”

Section: Control Strategymentioning

confidence: 99%

A Center-Tapped Transformer Based Multifunctional Single-Phase Converter with Wide DC-Bus Control

Stephen

Lee

Jung

et al. 2023

Sensors

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Alongside the rapid increase in distributed power generation and load, the demand for highly efficient and reliable power converters is increasing. This has resulted in the rise of grid interfaced renewable energy sources (RES), rapid deployment of battery energy storage systems (BESS) coupled with energy managment systems (EMS), and DC based grid. This paper presents a center-tapped transformer-based single-stage single-phase full-bridge (FB) bidirectional AC-DC converter and its control strategy to improve controllability and reliability in applications such as DC distribution, PV/BESS grid interfacing, vehicle to grid (V2G), and so on. In contrast to conventional galvanically isolated topologies, a single-phase center-tapped transformer is introduced. It links and galvanically isolates the converters and the grid and provides its leakage inductance as the needed inductor required for current control (depending on the design). Furthermore, it reduces the number of conventionally required power conversion stages by employing a wide DC-bus voltage control strategy, resulting in a single converter that undergoes a single power conversion. Additionally, the voltage level can be increased to further enhance the output quality by cascading multiple converters (Multi-Level). The structure, operation, and basic control scheme are discussed in detail. Verification through a 220 Vrms, 1.8 kVA, and 45∼100 VDC simulation and small-scale experimental prototype (60∼100 VDC voltage) for practical validation of the topology is also presented.

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Section: Control Strategymentioning

confidence: 99%

A Center-Tapped Transformer Based Multifunctional Single-Phase Converter with Wide DC-Bus Control

Stephen

Lee

Jung

et al. 2023

Sensors

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“…Electric trains normally adopt a voltage source PWM rectifier. The phase-locked loop (PLL) is used to capture the phase of the grid voltage and then achieve the synchronization between the AC voltage and AC current [43]. In addition, direct power control can obtain the synchronization current reference directly without PLL [44].…”

Section: B Modeling Of the Electric Trainmentioning

confidence: 99%

Low-Frequency Oscillation in Electric Railway Depot: A Comprehensive Review

Zhou

et al. 2021

IEEE Trans. Power Electron.

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The wide adoption of a new type of electric trains results in multiple frequency-scale instability problems, such as low-frequency oscillation (LFO), harmonic resonance and harmonic instability. Among them, LFO has been commonly reported at electric railway depots with multiple-energized electric trains around the whole world, thus attracting widespread research attention. LFOs cause adverse effects on the system stability and protection infrastructure of both the traction network and electric trains. This paper presents a comprehensive review of LFOs that consider both academic theoretical analysis and industrial engineering requirements. A unified mathematical model of the traction network and electric train is derived with a view to revealing the mechanism and factors that induce LFOs when these two systems interact. The study also draws deep insights from results of experimental measurements and industrial mitigation schemes already implemented in Chinese railway systems. A variety of mitigation techniques and recommendations based on theoretical principles and practical constraints are presented.

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“…Therefore, when the voltage distortion of distribution network is serious, using the above lock-in techniques not only increases the calculation burden, but also consumes a lot of resources. Various control strategy such as a phase-locked strategy based on second-order generalized integral [21], [22], a high-resolution SOGI-PLL phaselocked strategy [23], an improved control strategy based on negative sequence component compensation [24] etc. have been recently proposed for the control of PLL.…”

Section: Introductionmentioning

confidence: 99%

Phase-Locked Strategy of Photovoltaic Connected to Distribution Network With High Proportion Electric Arc Furnace

et al. 2020

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With the rapid development of industrialization, the proportion of electric arc furnaces (EAF) in distribution networks is getting higher and higher. Aiming at the problem that grid voltage is distorted by a large number of arc furnace nonlinear loads accessing to distribution networks, it is crucial to make dynamic analysis of distribution network voltage and adopt a control strategy of grid-connected converter based on the new phase-locked loop (PLL) technology. As a result, the harmonic distortion rate is reduced and the quality of grid-connected current and voltage is improved. In this paper, photovoltaic (PV) system model and the typical dynamic model of the EAF are established. By analyzing the influence of the EAF model on the PV grid-connected converter with the traditional phase-locked loop while connected to distribution network, a control strategy of the PV grid-connected converter with the self-adjusting double SOGI (MAF-SASOGI) phase-locked loop with the ideal low-pass filter is proposed. Through the simulation analysis, it is verified that precise phase locked can be realized and harmonic content of the system can be reduced by the PLL strategy proposed in this paper. Therefore, the quality of PV grid-connected voltage and current is improved. INDEX TERMS Distribution network, electric arc furnaces (EAF), voltage distortion, photovoltaic (PV) grid-connected, phase-locked strategy.

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Control of single-phase AC/DC converter based on SOGI-PLL voltage synchronization

Cited by 14 publications

References 6 publications

A Center-Tapped Transformer Based Multifunctional Single-Phase Converter with Wide DC-Bus Control

A Center-Tapped Transformer Based Multifunctional Single-Phase Converter with Wide DC-Bus Control

Low-Frequency Oscillation in Electric Railway Depot: A Comprehensive Review

Phase-Locked Strategy of Photovoltaic Connected to Distribution Network With High Proportion Electric Arc Furnace

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