Recursive Digital Filter Based Control for Power Quality Improvement of Grid Tied Solar PV System

Shukl, Pavitra; Singh, Bhim

doi:10.1109/tia.2020.2990369

Cited by 12 publications

(5 citation statements)

References 28 publications

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“…Various modern/traditional control techniques for similar SPVS, including SOGI-FLL, SRFT-PLL, and recursive digital filters, have been developed to address the issue of harmonics alleviation in supply current when dealing with distorted grid scenarios. These techniques have demonstrated a supply current's THD of approximately 4%, 4.3%, and 3.4%, respectively, as reported in the existing literature [26]. Through the application of traditional normalized LMS and dq0 techniques for SPVS, it has been shown that the grid current exhibits THD levels of 4.21% and 3.32%, respectively [27].…”

Section: Response At Constant 𝑃mentioning

confidence: 56%

Alleviation of Power Quality Issues in MVF-DEANF-PLL Based Solar PV Systems under Polluted Grid Conditions

Mohan,

Siddhan,

Chinnadurai

2023

Sustainability

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Solar energy is a sustainable and environmentally safe power source due to its widespread availability and cleanliness. Nowadays, the grid-integrated solar photovoltaic system (SPVS) has to work with a polluted grid, an imbalanced load, and changing solar irradiation. When the grid is polluted, it is also crucial to enhance power quality (PQ) at a common coupling point (CCP) while supplying significantly distorted and unreliable loads. For effective synchronization and the production of unit templates, it is necessary to retrieve positive sequence components (PSCs) from distorted/imbalanced grid voltages. In this study, a control algorithm for a grid-integrated SPVS is developed using a multi-variable filter dual-enhanced adaptive notch filter phase-locked loop (MVF-DEANF-PLL) which offers seamless grid synchronization and PQ issue alleviation. In a polluted grid environment, the proposed control approach aids in the reduction in current/voltage harmonics, DC offset, unity power factor (UPF) operation, and rapid estimation of sequence components. Even in unbalanced grid conditions, the proposed control approach efficiently extracts PSCs of both unbalanced load current and polluted CCP grid voltages. These PSCs are utilized to generate unit templates and reference source currents. By using a flexible step-size incremental conductance (FSSINC) maximum power point tracking (MPPT) technique, the highest available power of SPVS is gathered. MATLAB/Simulink is utilized for modelling a 7.22 kW SPV system, and results from simulations which depict that the proposed algorithm efficiently resolves PQ concerns in distribution networks with a polluted grid. Test observations of a 1 kW laboratory-developed SPVS prototype were recorded in compliance with the IEEE-519 standard. The suggested control technique complies with the aforementioned standards by providing a sinusoidal balanced source current that has a THD of 2.5%. Comparisons between the proposed control’s performance and that of a conventional SRF-PLL-based control technique were also performed.

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Section: Response At Constant 𝑃mentioning

confidence: 56%

Alleviation of Power Quality Issues in MVF-DEANF-PLL Based Solar PV Systems under Polluted Grid Conditions

Mohan,

Siddhan,

Chinnadurai

2023

Sustainability

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“…(10) where Kp represents the relative gain and provides the best dynamic performance, and Ki represents the integration gain that erases the error in the steady state. Use the traditional method the coefficients of the Kp and Ki controllers are calculated by comparing the system's total transfer function with the second-order generalized transfer [21]. In the private accounts of the shunt system active power filter pi control is necessary to set the Plosses used in pq accounts as shown in (11) [22].…”

Section: Hysteresis Band Current Controller Hbccmentioning

confidence: 99%

A novel optimizing PI control of shunt active power filter for power quality enhancement

Hadi

Thajeel²,

Nahar³

2022

Bulletin EEI

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In this paper, shunt active power filter (SAPF) is designed to address the problem of current harmonics in the source current arising from a nonlinear load and improve the quality of electric power. That will be by compensating reactive power and harmonic currents. The PI controller responsible for DC-link energy storage tuning was developed using the Lévy flight distribution algorithm (LFA). It is a novel, previously unused optimization approach to suggest relative gain Kp and integration gain Ki gain values for the PI controller. This approach aims to get the best dynamic performance of SAPF, speed up the convergence rate, get the fastest best stability and bypass constant voltage advancement for DC-link. The model was tested and implemented in MATLAB simulation software. The result of total harmonic distortion THD showed the efficiency of this method compared with the results of traditional PI. The design of the model in the current reference frame was based on instantaneous reactive power (pq) theory.

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“…Figure 2b shows the same phasor diagram with the exception that the AcF generates the current I AcF,h = −I C,source−p.h , i.e., it compensates I C,source−p.h . The AcF reference I ref ,h is finally determined using Equation (7). For the calculation of the customer's emission in the presence of the AcF to harmonic distortion, measurements of voltage and current harmonics and their phase angles at the PCC are needed, and all impedances must be known.…”

Section: Customer's Emission In Presence Of the Active Filtermentioning

confidence: 99%

“…For example, in [2], the authors used fuzzy logic to improve the performance of a three-level AcF, and in [3], fuzzy logic was used to improve the speed and convergency (singularity problem). A pre-existing solar photovoltaic system can also be used for power quality improvement (functions of AcF), as in [4][5][6][7]. Wind power plants are connected to a grid with high-power converters that produce harmonics at relatively low frequencies [8].…”

Section: Introductionmentioning

confidence: 99%

Active Filter Reference Calculations Based on Customers’ Current Harmonic Emissions

et al. 2021

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This paper deals with harmonics compensation in industrial and distribution networks using an active filter (AcF). When defining the AcF’s reference current, it is important to properly consider the network background harmonic distortion. Within this paper, we propose an AcF reference current calculation method, based on customers’ current harmonic emissions. The main novelty of the paper is the AcF reference current calculation method that considers only the customer’s contributions to the harmonic distortion at the point of common coupling (PCC). By separating the harmonic current at the PCC into components that can be attributed to the customer and to the network, it is possible to limit the required AcF power. To determine the customer’s emission, the customer’s harmonic impedance must be known. As the actual harmonic impedance cannot be determined in a real environment, a reference harmonic impedance can be used instead. To test the proposed AcF reference current calculation method, we developed a control algorithm of an AcF in the PSCAD software and tested this on a medium-voltage benchmark simulation model.

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Recursive Digital Filter Based Control for Power Quality Improvement of Grid Tied Solar PV System

Cited by 12 publications

References 28 publications

Alleviation of Power Quality Issues in MVF-DEANF-PLL Based Solar PV Systems under Polluted Grid Conditions

Alleviation of Power Quality Issues in MVF-DEANF-PLL Based Solar PV Systems under Polluted Grid Conditions

A novel optimizing PI control of shunt active power filter for power quality enhancement

Active Filter Reference Calculations Based on Customers’ Current Harmonic Emissions

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