A Robust Extended Complex Kalman Filter and Sliding-mode Control Based Shunt Active Power Filter

Panigrahi, Rakhee; Panda, P. C.; Subudhi, Bidyadhar

doi:10.1080/15325008.2013.871609

Cited by 26 publications

(8 citation statements)

References 25 publications

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“…When the system is considered nonlinear, first the system has to be linearized. To avoid the inaccuracies in estimation by considering voltage distortion, harmonics, and noise, a new variant of KF‐based technique, ie, an EKF‐based SAPF was analyzed in Panigrahi et al to extract the harmonics from nonlinear system. A state‐space model to estimate the state of a system using EKF can be represented as

x_{n, i + 1} = f ((),, x_{n, i}, μ_{n, i}) + w_{n, i}

u_{n, i} = g ((),, x_{n, i}, μ_{n, i}) + v_{n, i}

where w n , i and v n , i are zero mean white Gaussian stochastic processes with covariance matrices ∑ w and ∑ v , respectively.…”

Section: Design Of Dekf‐based Controllermentioning

confidence: 99%

“…Tracking error is significantly reduced, and stability of the system is improved using the KF‐based method suggested in Panigrahi and Subudhi . To avoid the inaccuracies in estimation of fundamental load currents by considering voltage distortion, harmonics, and noise, new variants of KF‐based techniques exploited in Panigrahi et al, Subudhi et al, and Shah and Singh successfully extract the harmonics from a nonlinear system. Among different types of KF‐based techniques, the extended KF (EKF) and robust extended complex KF (RECKF) algorithms are well‐known for mitigating the power quality issues in a nonlinear system.…”

Section: Introductionmentioning

confidence: 99%

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Kalman filter variant intelligent control for power quality improvement in photovoltaic active power filter system

Prince

Panda

2019

Int Trans Electr Energ Syst

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Summary The increased usage of nonlinear loads in the distribution system network with deep integration of renewable energy sources imposes the need for advanced control to improve power quality. With the objective to attain desired sinusoidal voltage waveshape at the common utility point, unity power factor operation, and reduction in harmonics, a swarm intelligent enhanced dual extended Kalman filter (DEKF) control technique for improving the performance of shunt active power filter (SAPF) is proposed in this paper. A photovoltaic (PV) array is integrated at the DC‐bus which supplies the required load power thus reducing the grid power demand. A single sensor‐based control is used to track the maximum power from the two‐stage PV array. The enhancement of the SAPF performance requires proper tuning of parameters; constriction factor‐based particle swarm optimization (PSO) is adopted in this regard. The DEKF estimates both state and parameter from the nonlinear system for generating a reference signal. The performance of the proposed control algorithm is compared with the Extended Kalman filter (EKF)‐based PV‐SAPF system using MATLAB/Simulink. To verify the efficacy of the controller, an experimental PV‐SAPF prototype is developed in the laboratory and tested under balanced and unbalanced supply, dynamic load as well as varying irradiance conditions.

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x_{n, i + 1} = f ((),, x_{n, i}, μ_{n, i}) + w_{n, i}

u_{n, i} = g ((),, x_{n, i}, μ_{n, i}) + v_{n, i}

where w n , i and v n , i are zero mean white Gaussian stochastic processes with covariance matrices ∑ w and ∑ v , respectively.…”

Section: Design Of Dekf‐based Controllermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Kalman filter variant intelligent control for power quality improvement in photovoltaic active power filter system

Prince

Panda

2019

Int Trans Electr Energ Syst

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“…As the dominant harmonics are injected by the passive filter and the active filter will compensate other than the dominant harmonics so the rating of the filter is reduced. Many literature surveys discussed the different topology of Hybrid filter [3][6] [7]. The active filter is tuned by the hysteresis controller.…”

Section: Introductionmentioning

confidence: 99%

Assorted hybrid filter topology for harmonic compensation in front end system

Sriranjani

Jayalalitha

2014

2014 International Conference on Science Engineering and Management Research (ICSEMR)

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An Assorted topology of hybrid filter in front end system compensates the reactive power and current harmonics. In this study, a various topology of hybrid filter (SSHF) is analyzed in the point of harmonic reduction, power factor and voltage stress in active filter. Three configuration of hybrid filter is taken for the analysis to mitigate harmonics and reactive power. Shunt hybrid filter, series hybrid filter and shunt-series hybrid filter are the different topology of hybrid filter. The combination of active and passive components forms the hybrid filter where the active filter is controlled by adaptive controller. The least mean square algorithm based adaptive controller is preferred where the learning rate is found by trial and error. The passive filter is tuned to the dominant harmonics and the active filter/series hybrid filter compensates other than dominant harmonics. The reference signal for the active filter is the fundamental current attained from the line current and the hysteresis controller switches the MOSFET in order that the line current follows the reference current. The study is carried out in the system by considering the line impedance. The different types of filter are studied with adaptive controller in MATLAB environment.

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“…Major issues of power quality is harmonics and low power factor that derates the machines, raise the temperature of the neutral line and cable and there is a mal function of the protective devices [1], [2], [3], [4]. Harmonic compensation and power factor improvement in the line current is realized by the Shunt active filter(SAF) [5], [6], [7]. Performance of the SAF not only depend on the design of LC of SAF, the algorithm developed for generating reference signal for current controller plays an important role.…”

Section: Introductionmentioning

confidence: 99%

Average direct and quadrature axis based reference current generation for shunt active filter using Xilinx blockset toolbox - A Simulink approach

Sriranjani

Jayalalitha

2015

2015 International Conference on Smart Technologies and Management for Computing, Communication, Controls, Energy and Materials

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This paper deals with the mitigation of low order harmonics and improvement in power factor of the supply current and poor power quality in load side due to the non linear load and inductive load. One of the most popular reference current extractions for the active filter is synchronous reference frame. Harmonics compensation is possible with this method but the reactive power compensation is poor due to its transformation principle. The proposed method for both harmonic compensation and reactive power compensation is the average direct and quadrature axis frame (Average dq frame) extracts fundamental magnitude of the line current. The results are validated through MATLAB Simulink -Xilinx system generator.

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A Robust Extended Complex Kalman Filter and Sliding-mode Control Based Shunt Active Power Filter

Cited by 26 publications

References 25 publications

Kalman filter variant intelligent control for power quality improvement in photovoltaic active power filter system

Kalman filter variant intelligent control for power quality improvement in photovoltaic active power filter system

Assorted hybrid filter topology for harmonic compensation in front end system

Average direct and quadrature axis based reference current generation for shunt active filter using Xilinx blockset toolbox - A Simulink approach

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