A Robust LQG Servo Control Strategy of Shunt-Active Power Filter for Power Quality Enhancement

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

doi:10.1109/tpel.2015.2456155

Cited by 53 publications

(26 citation statements)

References 17 publications

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“…In [42,43], the artificial neural network controller and the linear quadratic Gaussian controller are designed to optimize the performance of APF.…”

Section: Active Control Technologymentioning

confidence: 99%

Overview of power quality analysis and control technology for the smart grid

Luo

et al. 2016

J. Mod. Power Syst. Clean Energy

100

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With the wide application of non-linear loads and the large-scale access of distributed energy generations based on power electronics equipments, power quality problems in the distribution network are increasingly serious with new characteristics. Further in-depth research is of great significance in theory and practice. This paper provides an overview of power quality analysis, compensators, and control technologies under the new situation of smart grid. It focuses on the topologies and control methods for power quality conditioners, especially new characteristics of power quality and applicable control technologies in microgrids and distributed power plants. Finally, trends and prospects of power quality control technology are introduced, which is important to achieve security and efficient operation of the smart grid.

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“…In [42,43], the artificial neural network controller and the linear quadratic Gaussian controller are designed to optimize the performance of APF.…”

Section: Active Control Technologymentioning

confidence: 99%

Overview of power quality analysis and control technology for the smart grid

Luo

et al. 2016

J. Mod. Power Syst. Clean Energy

100

View full text Add to dashboard Cite

show abstract

“…O controlador apresentado em [18] denomina-se híbrido pois foi utilizado um controlador diferente (do tipo PI) na malha de tensão. Em [20] não há controle em malha fechada para a tensão do barramento CC. Em [19] não foi considerado em nenhum aspecto a tensão do barramento CC do conversor.…”

Section: Introductionunclassified

Controlador Híbrido Robusto PI-LQG Para Melhoria da Performance do STATCOM

Costa¹,

Castro²,

Machado³

et al. 2020

Eletrônica de Potência

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Resumo -Este trabalho propõe uma técnica de controle híbrida Proporcional Integral -Linear Quadratic Gaussian (PI-LQG) para o Static Synchronous Compensator (STATCOM). Na técnica proposta, adiciona-se o filtro de Kalman ao controlador Linear Quadratic Regulator (LQR) com ação integral, formando o controlador LQG, tal combinação torna o sistema mais robusto e menos suscetível a ruídos de processo e de medição. Ao se utilizar um controlador híbrido, as matrizes de ponderação para projetar os ganhos do controlador LQR e do filtro de Kalman são de menor ordem, facilitando a sintonia dos controladores. Para a validação da técnica proposta, são utilizadas duas técnicas de controle para comparação: PI tradicional e PI-LQR com ação integral. Os resultados são obtidos via simulação, no software PSIM, e experimentalmente. Palavras-Chave -STATCOM, filtro de Kalman, LQG, LQR, PI. Abstract -This work proposes a hybrid Proportional Integral -Linear Quadratic Gaussian (PI-LQG) robust servo control method for Static SynchronousCompensator (STATCOM). In the proposed technique, the Kalman filter is added to the Linear Quadratic Regulator (LQR) controller with integral action, forming the LQG controller, such combination makes the system more robust and less susceptible to process and measurement noises. The using of hybrid controller makes weighting matrices for design the LQR controller and the Kalman filter gains to have lower order and thus facilitates the controllers design. To validate the proposed strategy, two control techniques are used for comparison: traditional PI and hybrid control PI-LQR with integral action. The results are obtained through simulation, in PSIM software, and experimentally. 

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“…This paper deals with the topic of shunt active power filter (SAPF) control [1][2][3][4]. The aim of the study is to present a review of the methods of SAPF control used in practice.…”

Section: Introductionmentioning

confidence: 99%

Least Mean Squares and Recursive Least Squares Algorithms for Total Harmonic Distortion Reduction Using Shunt Active Power Filter Control

et al. 2019

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This paper deals with the use of least mean squares (LMS, NLMS) and recursive least squares (RLS) algorithms for total harmonic distortion (THD) reduction using shunt active power filter (SAPF) control. The article presents a pilot study necessary for the construction of our own controlled adaptive modular inverter. The objective of the study is to find an optimal algorithm for the implementation. The introduction contains a survey of the literature and summarizes contemporary methods. According to this research, only adaptive filtration fulfills our requirements (adaptability, real-time processing, etc.). The primary benefit of the paper is the study of the efficiency of two basic approaches to adaptation ((N)LMS and RLS) in the application area of SAPF control. The study examines the impact of parameter settings (filter length, convergence constant, forgetting factor) on THD, signal-to-noise ratio (SNR), root mean square error (RMSE), percentage root mean square difference (PRD), speed, and stability. The experiments are realized with real current and voltage recordings (consumer electronics such as PC source without power factor correction (PFC), HI-FI amplifier, etc.), which contain fast dynamic transient phenomena. The realized model takes into account a delay caused by digital signal processing (DSP) (the implementation of algorithms on field programmable gate array (FPGA), approximately 1–5 μs) and a delay caused by the reaction time of the proper inverter (approximately 100 μs). The pilot study clearly showed that the RLS algorithm is the most suitable for the implementation of an adaptive modular inverter because it achieved the best results for all analyzed parameters.

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A Robust LQG Servo Control Strategy of Shunt-Active Power Filter for Power Quality Enhancement

Cited by 53 publications

References 17 publications

Overview of power quality analysis and control technology for the smart grid

Overview of power quality analysis and control technology for the smart grid

Controlador Híbrido Robusto PI-LQG Para Melhoria da Performance do STATCOM

Least Mean Squares and Recursive Least Squares Algorithms for Total Harmonic Distortion Reduction Using Shunt Active Power Filter Control

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