Adaptive Minimum Variance Control of Grid Connected Single Phase Inverters in Synchronously Rotating DQ Reference Frame

Bisht, Robin; Subramaniam, Shashank; Bhattarai, Rojan; Kamalasadan, Sukumar

doi:10.1109/ias.2018.8544589

Cited by 3 publications

(1 citation statement)

References 15 publications

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“…However, the existing SRF techniques for harmonic compensation based on PFs, APFs and hybrid approaches are costly and complex reasoning additional equipment 9 . Existing techniques for compensating unwanted harmonics using PI controllers mitigate either voltage harmonics assuming current to be sinusoidal 10‐13 or mitigate current harmonics assuming voltage to be sinusoidal 14,15 . However, given the fact that voltage and current are correlated entities, these assumptions are not realistic and result in sub optimal controllers.…”

Section: Introductionmentioning

confidence: 99%

A hybrid voltage‐current compensator using a synchronous reference frame technique for grid‐connected microgrid under nonlinear load conditions

Khidrani

Habibuddin

Mustafa

et al. 2020

Int Trans Electr Energ Syst

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Power quality is important for the reliable operation of power grids. Unwanted harmonics cause serious degradation of power quality. This problem is more obvious for distributed generations connected to a microgrid. To solve this issue, this paper proposes an improved voltage and current (VI) compensator to collectively suppress voltage and current harmonics in a three-phase hybrid fuel cell and photovoltaic grid-connected inverters using a synchronous reference frame (SRF) based technique in the presence of non-linear loads. It is shown that the proposed compensator can effectively reduce the harmonic contents in voltage and current without any dependence on offset devices such as active and passive filters. Simulations in MATLAB/Simulink show that the proposed control strategy not only reduces the total harmonic distortion to less than 5% (as per the IEEE 519 standard) but also results in the least total harmonic distortion (THD) as compared to existing techniques. K E Y W O R D S current/voltage compensation, power quality, power system harmonics 1 | INTRODUCTION In the past few decades, photovoltaic (PV) and fuel cell (FC) systems have gained much popularity and have been successfully integrated with microgrids (MG) and utility networks through interface converters. 1 One of the most common power quality issues is the presence of unwanted harmonics in voltage and current. These problems are commonly attributed to non-linear loads (NLL) and interface converters, that is, grid-connective inverters (GCI) for distributed generations. 2,3 Interface converters form an integral part for interfacing renewable energy (RE) sources to the grid.

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Section: Introductionmentioning

confidence: 99%

A hybrid voltage‐current compensator using a synchronous reference frame technique for grid‐connected microgrid under nonlinear load conditions

Khidrani

Habibuddin

Mustafa

et al. 2020

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

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A Novel Synchronously Rotating Reference Frame Based Adaptive Control Architecture for Enhanced Grid Support Functions of Single-Phase Inverters

Bisht

Bhattarai

Subramaniam

et al. 2020

IEEE Trans. on Ind. Applicat.

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Robust Fractional-Order Perfect Control for Non-Full Rank Plants Described in the Grünwald-Letnikov IMC Framework

Hunek

Feliks

2021

Fract Calc Appl Anal

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The advanced analytical study in the field of fractional-order non-full rank inverse model control design is presented in the paper. Following the recent results in this matter it is certain, that the inverse model control-oriented perfect control law can be established for the non-full rank integer-order systems being under the discrete-time state-space reference with zero value. It is shown here, that the perfect control paradigm can be extended to cover the multivariable non-full rank plants governed by the more general Grünwald-Letnikov discrete-time state-space model. Indeed, the postulated approach significantly reduces both iterative and non-iterative computational effort, mainly derived from the approximation of the Moore-Penrose inverse of the non-full rank matrices to finally be inverted. A prevention provided by the new method excludes the detrimental matrix behavior in the form of singularity, often avoided due to the observed ill-conditioned sensitivity. Thus, the new defined robust fractional-order non-full rank instance of such control strategy, supported by the pole-free mechanism, gives rise to the introduction of the general unified non-full rank perfect control-originated theory. Numerical algorithms with simulation investigation clearly confirm the innovative peculiarities provided by the manuscript.

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Adaptive Minimum Variance Control of Grid Connected Single Phase Inverters in Synchronously Rotating DQ Reference Frame

Cited by 3 publications

References 15 publications

A hybrid voltage‐current compensator using a synchronous reference frame technique for grid‐connected microgrid under nonlinear load conditions

A hybrid voltage‐current compensator using a synchronous reference frame technique for grid‐connected microgrid under nonlinear load conditions

A Novel Synchronously Rotating Reference Frame Based Adaptive Control Architecture for Enhanced Grid Support Functions of Single-Phase Inverters

Robust Fractional-Order Perfect Control for Non-Full Rank Plants Described in the Grünwald-Letnikov IMC Framework

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