Combined IIR and FIR Filter for Improved Power Quality of PV Interfaced Utility Grid

Shukl, Pavitra; Singh, Bhim

doi:10.1109/tia.2020.3031875

Cited by 12 publications

(4 citation statements)

References 20 publications

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“…Similarly, total harmonic distortion of H5-ZVR, H5-ZVRD and H5-ZVRS is 1.03%, 0.91% and 0.91% respectively. The rms and p-p value of leakage current must be within 30mA and 300 mA respectively [24][25] and current harmonics distortion allowed is less than 5% as per [26][27]. This shows that the proposed H5-ZVR and its derivatives again outperform compared to HB-ZVR topologies and also the parameters are within acceptable limits as per the standards.…”

Section: Simulation Resultsmentioning

confidence: 91%

H5-ZVR Single-Phase Grid-Tied Inverters for Photovoltaic Application

Geetha

Sreenivasappa

2021

IJRER

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The majority of companies are shifting to renewable energy sources as non-renewable fuels are increasingly depleting. Solar energy is a dependable form of green energy. The solar energy after converting to AC through an inverter it is possible to inject into the grid to support distributed power generation system. Transformerless grid-tied inverters have become popular due to their lightweight and reduced cost. The leakage current does exist in this kind of inverter that deteriorate the performance of the inverter. This paper presents a novel H5-ZVR, H5-ZVRD and H5-ZVRS topologies to address the leakage current issue. These inverters take the benefit of hybrid technology, where H5 inverters are integrated with HB-ZVR topologies. To operate the inverter at its highest performance an appropriate hybrid pulse width modulation is also presented. The inverters are simulated in MATLAB to verify the operation and it is found that the leakage current of the inverters is considerably reduced as compared to HB-ZVR topologies. The leakage current of H5-ZVR, H5-ZVRD and H5-ZVRS are found to be 10 mA, 7.3 mA and 7.3 mA respectively and THD of these modules are 1.03%, 0.91% and 0.91% respectively. Also, the topologies present good common mode and differential mode characteristics.

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Section: Simulation Resultsmentioning

confidence: 91%

H5-ZVR Single-Phase Grid-Tied Inverters for Photovoltaic Application

Geetha

Sreenivasappa

2021

IJRER

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“…Especially for the IIR filter based on an all-pass structure, the amplitude-frequency characteristics are all 0 dB within the Nyquist frequency band range. Thus, during the filter design process, only the phase frequency characteristics of the filter need to be adjusted, reducing the difficulty of filter design significantly [37].…”

Section: Design Of Fractional-order Phase Lead Compensation Filtermentioning

confidence: 99%

Fractional-Order Phase Lead Compensation Multirate Repetitive Control for Grid-Tied Inverters

Liang,

Lee,

Zhang

2023

Fractal Fract

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To reduce computational load and memory consumption, multirate repetitive control (MRC) with downsampling rates provides a flexible and efficient design for proportional-integral multi-resonant repetitive control (PIMR-RC) systems for grid-tied inverters. However, in MRC systems, repetitive controllers with low sampling rates produce low delay periods, and integer-order phase lead compensation may cause undercompensation or overcompensation. These imprecise linear phase lead compensations may result in deteriorated control performance. To address these problems, based on an infinite impulse response (IIR) filter, a fractional-order phase lead proportional-integral multi-resonant multirate repetitive control (FPL-PIMR-MRC) is proposed for grid-tied inverters in this paper. The proposed method can provide a suitable fractional phase lead step to achieve a wide stability region, minor tracking errors, and low hardware costs. The IIR fractional-order lead filter design, stability analysis, and the step-by-step parameter tuning of the FPL-PIMR-MRC system are derived in detail. Finally, simulation performed confirms the feasibility and effectiveness of the proposed scheme.

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“…Detection of reactive and harmonics current of a PV generation distribution system using triangular function, full fill the power quality requirement of a smart grid system [2]. During weak grid conditions, to mitigate the harmonic currents and voltages with the help of the combination of FIR and IIR filter [3]. From distorted load current, basic active components are estimated using a fractional order notch filter.…”

Section: Introductionmentioning

confidence: 99%

Improvement of power quality of a 200 kW grid-connected PV system

Saini

Khan

Sharma

et al. 2023

IJPEDS

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<span lang="EN-US">In order to enhance electricity quality, a grid-connected photovoltaic (PV) system simulation is presented in this study. A 200 kW photovoltaic system is integrated to a utility grid and loads. A 25 kV 3-level insulated gate bipolar transistor (IGBT) bridge converter is used. Through this system integration of a renewable energy source with a non-renewable source is achieved. This system also wins over the intermittent nature of the renewable source (solar energy) and non-reliability of conventional sources (utility grid). Power and signal quality for various signals such as ripple factor and total harmonic distortion has improved. The suggested system is investigated using MATLAB/Simulink environment. Total harmonic distortion (THD) in voltage and current, ripple factor correction is also incorporate in the MATLAB model.</span>

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Combined IIR and FIR Filter for Improved Power Quality of PV Interfaced Utility Grid

Cited by 12 publications

References 20 publications

H5-ZVR Single-Phase Grid-Tied Inverters for Photovoltaic Application

H5-ZVR Single-Phase Grid-Tied Inverters for Photovoltaic Application

Fractional-Order Phase Lead Compensation Multirate Repetitive Control for Grid-Tied Inverters

Improvement of power quality of a 200 kW grid-connected PV system

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