Shunt Active Power Filter Based on Cascaded Transformers Coupled With Three-Phase Bridge Converters

Carlos, Gregory Arthur de Almeida; Jacobina, Cursino B.; Mello, Joao Paulo Ramos Agra; Santos, Euzeli Cipriano dos

doi:10.1109/tia.2017.2702666

Cited by 21 publications

(4 citation statements)

References 24 publications

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“…These DC‐link capacitors are highly vulnerable in the practical application of SAF, but by adopting cascaded transformer, the failure rate of these capacitors minimised due to adequate isolation provided by the cascaded transformer. So the developed topology is reliable on the aspect of DC‐link capacitor failure …”

Section: Introductionmentioning

confidence: 99%

Implementation of EMD‐based control algorithm for a cascaded multilevel inverter–based shunt active filter

Dash

Panda

Lenka

2019

Int Trans Electr Energ Syst

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Summary This paper describes an empirical mode decomposition control algorithm to extract the fundamental component and set the reference for harmonic extraction in a cascaded multilevel inverter–based shunt active filter. The proposed technique is fully reliant on the data samples that are decomposed instantaneously and does not require any weighing factor. The fundamental component of load current is found by applying a novel empirical mode decomposition algorithm from the nonlinear load current samples. Spline interpolation is used to extract the intrinsic mode function. For online implementation, the maxima and minima points of load current are stored using a modified field programming gate array (FPGA)‐based circular buffer circuit. Finally, the proposed cascaded multilevel inverter–based shunt active filter is investigated both by simulation and hardware implementation. The results obtained validates the performance of the proposed control technique under balanced and unbalanced loading conditions.

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Section: Introductionmentioning

confidence: 99%

Implementation of EMD‐based control algorithm for a cascaded multilevel inverter–based shunt active filter

Dash

Panda

Lenka

2019

Int Trans Electr Energ Syst

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“…Alleviation of harmonics and power factor correction is carried out through the SAPF with cascade controller, which is discussed in [7]. In [8], a filter is designed through a 1φ transformer with a three-phase bridge, by which the harmonic current compensation is achieved. SAPF is designed with SRF controllers based on Park's transformation, by which the accurate reference current is generated for faster response, which is discussed in [9].…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Seven Level Reduced Switch ANPC Inverter in Shunt Active Power Filter With RBFNN-Based Harmonic Current Generation

et al. 2022

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One of the serious issues that a Power System faces is the Power Quality (PQ) disturbance which occur mainly because of the non-linear loads. Among these PQ disturbances, harmonics play a vital role which should to be mitigated along with reactive power compensation. In this paper, a modified sevenlevel boost Active-Neutral-Point-Clamped (7LB-ANPC) inverter is utilized as a Shunt Active Power Filter (SAPF). Another vital aspect of this work is to retain the link voltage across the capacitor, which is accomplished through a PI controller tuned with an Adaptive Neuro-Fuzzy Inference System (ANFIS). An adaptive instantaneous p-q theory is instigated in the direction of extracting reference current and the harmonic extraction is carried out by using Radial Basis Function Neural Network (RBFNN). Gating sequence of inverter is generated for the outputs, which are attained from ANFIS and RBFNN and thus the opposite harmonics are injected to the Point of Common Coupling (PCC) by which current harmonics are eliminated with reactive power compensation. The 7Lb-ANPC inverter has a minimized number of switching devices with low switching losses and high boosting ability. By RBFNN based reference current generation, the source current THD of 0.89% is achieved. The proposed methodology is simulated through MATLAB and in hardware by utilizing FPGA Spartan 6E.

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“…Of two types of converters (CSC and VSC), VSC is more versatile because it is light, cheap and can be upgraded to multilevel and multistep for achieving improved performance. Various topologies of DSTATCOMs are reported in the literature (Singh et al, 2014;de Almeida Carlos et al, 2017). Of all the topologies defined, three-phase, three-wire transformer less VSC topology is the most preferred one because it is less bulky and has less switching losses.…”

Section: Introductionmentioning

confidence: 99%

A multiobjective grid interactive solar photovoltaic DSTATCOM system using cascaded observer-based DFLL approach

Dash

Sharma

Subudhi

2020

WJE

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Purpose A cascaded observer-based transfer delay frequency locked loop (CODFLL) algorithm is developed to control the distribution static compensator (DSTATCOM) to address various power quality (PQ) issues arise because of distorted grid and load conditions. Moreover, frequency locked loop is included along with the observer to take care of the frequency drift from nominal value and to improve its performance during steady state and transient conditions. During daylight, the proposed system works as photovoltaic (PV) DSTATCOM and performs multiple functions for improving PQ whilst transferring power to grid and load. The system under consideration acts as DSTATCOM during night and bad weather condition to nullify the PQ issues. Design/methodology/approach CODFLL control algorithm generates reference signal for hysteresis controller. This reference signal is compared with an actual grid signal and a gate pulse is produced for a voltage source converter. The system is made frequency adaptive by transfer delay adaptive frequency locked loop (FLL). Peak power is extracted from a PV source using the perturb and observe technique irrespective of disturbances encountered in the system. Findings The PV system’s performance with the proposed controller is studied and compared with conventional control algorithms such as least mean fourth (LMF), improved second-order generalized integrator frequency locked loop (ISOGI-FLL), synchronous reference frame phased lock loop (SRF-PLL) and frequency adaptive disturbance observer (DOB) for different cases, for example, steady-state condition, dynamic condition, variable insolation, voltage sag and swell and frequency wandering in the supply side. It is found that the proposed method tracks the frequency variation faster as compared to ISOGI-FLL without any oscillations. During unbalanced loading conditions, CODFLL exhibits zero oscillations. Harmonics in system parameters are reduced to the level of IEEE standard; unity power factor is maintained at the grid side; hassle-free power flow takes place from the source to the grid and load; and consistent voltage profile is maintained at the coupling point. Originality/value CODFLL control algorithm is developed for PV-DSTATCOM systems to generate a reference grid current.

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Shunt Active Power Filter Based on Cascaded Transformers Coupled With Three-Phase Bridge Converters

Cited by 21 publications

References 24 publications

Implementation of EMD‐based control algorithm for a cascaded multilevel inverter–based shunt active filter

Implementation of EMD‐based control algorithm for a cascaded multilevel inverter–based shunt active filter

Performance Evaluation of Seven Level Reduced Switch ANPC Inverter in Shunt Active Power Filter With RBFNN-Based Harmonic Current Generation

A multiobjective grid interactive solar photovoltaic DSTATCOM system using cascaded observer-based DFLL approach

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