Symmetrical Components Detection With FFDSOGI-PLL Under Distorted Grid Conditions

Hoepfner, Benjamin; Vick, Ralf

doi:10.1109/sest.2019.8849000

Cited by 6 publications

(8 citation statements)

References 17 publications

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“…All units are three-phase converters operating in the synchronous reference frame with ratings as shown in Table 1. Furthermore, phase synchronization is achieved through a FFDSOGI-PLL Hoepfner et al (2019) and the output filter is a LCL designed accordingly with Jayalath and Hanif (2017); Said-Romdhane et al (2017). The controller gains are listed in Table 2.…”

Section: Simulation Resultsmentioning

confidence: 99%

Power Sharing in Island Microgrids

2021

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The growth of local renewable energy sources and heavy loads in power distribution networks, such as the increasing electric vehicles charging stations, causes several issues with a direct impact on the stability of the electrical grid. An attempt to overcome such issues is the microgrid concept, which has the grid structured into local sub-grids that manage their power and energy balancing. A microgrid may operate connected or disconnected from the main grid, being dynamically necessary to guarantee a power balancing between local loads and sources. Furthermore, as several power units are connected to the same microgrid, equity is also required in terms of power sharing. Current work explores a scenario of an island operation of a microgrid with multiple sources, including battery storage systems and sharing power with multiple loads, including electric vehicle chargers, a scenario appropriated to a city grid. A local control solution for a stable operation of the microgrid in terms of both power balancing and power sharing is presented and validated through numerical and experimental results.

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Section: Simulation Resultsmentioning

confidence: 99%

Power Sharing in Island Microgrids

2021

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“…A more recent approach, suggested in [19,20], considers a SOGI filter with a fixed center frequency (ω 0 = ω n ) for single-phase systems (FFSOGI). The method was further extended in [21] to a double SOGI, becoming an FFDSOGI. Contrary to the DSOGI, the FFDSOGI operates with a fixed frequency (there is no frequency feedback path to the SOGIs).…”

Section: Ffdsogi-pllmentioning

confidence: 99%

Comparison of DSOGI-Based PLL for Phase Estimation in Three-Phase Weak Grids

et al. 2021

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The paper presents a summary of different double second-order generalized integrator (DSOGI)-based phase-locked loop (PLL) algorithms for synchronization with three-phase weak grids. The different methods are compared through simulation under a variety of grid conditions, such as unbalanced phase voltages, high low-order harmonics distortion, frequency steps, phase jumps, and voltage sags. Following the simulation results, the three methods that have shown the overall best results are compared through an experimental setup for further results validation under operation with a voltage-source converter. Based on the obtained results, a benchmark table is presented that allows ranking the performance of the tested methods for different expected grid conditions.

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“…With both signals it is possible to calculate the voltage's positive sequence (PS). Frequency-fixed equivalents were presented in [30] as a "Decoupled DSOGI-PLL" and in [31] as a "Frequency-fixed DSOGI-PLL" (FFDSOGI-PLL). Both approaches use a phase error compensation for off-nominal frequencies.…”

Section: Introductionmentioning

confidence: 99%

A Three-Phase Frequency-Fixed DSOGI-PLL With Low Computational Effort

Hoepfner

Vick

2023

IEEE Access

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This paper offers a detailed analysis as well as a tuning and discretization approach of the presented frequency-fixed dual second order generalized integrator based phase-locked loop (FFDSOGI-PLL) for three-phase power systems. The method combines different single-and three-phase PLL approaches by ensuring high phase-and frequency tracking properties. The comparison with the standard frequency-variable DSOGI-PLL and three different recently published three-phase frequency and phaseangle estimation systems shows, that this approach gives a fast and stable phase and frequency detection of the grid voltage with very low computational burden. The results are applicable to, for instance, photovoltaic or frequency converters or active power filters.

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Symmetrical Components Detection With FFDSOGI-PLL Under Distorted Grid Conditions

Cited by 6 publications

References 17 publications

Power Sharing in Island Microgrids

Power Sharing in Island Microgrids

Comparison of DSOGI-Based PLL for Phase Estimation in Three-Phase Weak Grids

A Three-Phase Frequency-Fixed DSOGI-PLL With Low Computational Effort

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