Simplified Control Structure for Current Control of Single Phase Rectifiers Using COT-ANN-PWM

Predictive current controller is often adopted to compensate time delays caused by digital control. But traditional predictive current control algorithm for four-quadrant converters is an open-loop current observer essentially. Current value predicted is affected by many factors such as grid voltage extrapolation error, inductance error and dead-zone time. All of them will aggravate the grid current distortion. Current predictive algorithm based on repetitive control observer was proposed which has the advantages of simplicity and easy to be implemented on microprocessors in this paper. The proposed method can improve the predictive current precision and reduce the grid current distortion. The proposed method was verified by the experimental results.I.

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“…The grid current at instant (k+1)T s can be predicted according to (3) in traditional predictive current control method.…”

Section: B Problems With Open-loop Predictive Current Algorithmmentioning

confidence: 99%

“…The robustness of current loop will be depressed. Predictive current controller was proposed to solve the problem by predicting the grid current ahead of one sampling period [2][3][4][5] . But traditional predictive algorithm is essentially an open-loop current observer, in which predictive current error is not convergence.…”

Section: Introductionmentioning

confidence: 99%

Improved predictive current controller for four-quadrant converters

Gao

Liu

Lin

et al. 2009

2009 IEEE 6th International Power Electronics and Motion Control Conference

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“…In recent years, fuzzy logic controllers constitute a major branch of the industrial applications. These controllers have some advantages: a simple theory and applied to complex systems, no need to accurate mathematical models of the process required to be controlled, and a good robustness .…”

Section: Introductionmentioning

confidence: 99%

Fuzzy logic controller for three‐level shunt active filter compensating harmonics and reactive power

Saidi

Abbassi

Chebbi

2015

Adaptive Control & Signal

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In this paper, the use of a three-level inverter as a shunt active power filter is carried out, taking advantage of the benefits of multi-level inverter, namely, the reduction both in the overall switching losses and in total harmonic distortion. The main focus of this article is to investigate the potentialities of the inverter employed as shunt active power filter on the compensation of the reactive power and the mitigation of harmonics drawn from a nonlinear load and unbalanced sources. The most previously reported three-level inverter-based shunt active power filters have been controlled and monitored through conventional controllers, which require a complicated mathematical model. In order to overcome this problem, an extended intelligent controller is proposed for a three-level shunt active power filter.The aim of the proposed fuzzy logic control algorithm is to improve the behavior of voltage across the floating capacitors in steady/dynamic states and to minimize the switches commutations by taking into account the references of the harmonic currents injected in the network. The proposed control strategy has been simulated, and the obtained results prove that it is very successful.

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Improvement of Power Quality Using Backstepping Control Strategy for a Transformerless Dual-Stage Grid-Connected Photovoltaic System

Chigane

Ouassaid

2019

Recent Advances in Electrical and Information Technologies for Sustainable Development

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Simplified Control Structure for Current Control of Single Phase Rectifiers Using COT-ANN-PWM

Cited by 13 publications

References 8 publications

Improved predictive current controller for four-quadrant converters

Improved predictive current controller for four-quadrant converters

Fuzzy logic controller for three‐level shunt active filter compensating harmonics and reactive power

Improvement of Power Quality Using Backstepping Control Strategy for a Transformerless Dual-Stage Grid-Connected Photovoltaic System

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