Harmonic Current Compensation based on Three-phase Three-level Shunt Active Filter using Fuzzy Logic Current Controller

Salim, Chennai; M-T, Benchouia; Goléa, A.

doi:10.5370/jeet.2011.6.5.595

Cited by 25 publications

(10 citation statements)

References 25 publications

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“…These applications require clean power and high reliability regardless of the electric power failures and distorted utility supply voltage. Thus, the performance of the UPS systems is usually evaluated in terms of the total harmonic distortion (THD) of the output voltage and the transient/steadystate responses regardless of the load conditions: load step change, linear load, and nonlinear load [4]- [7]. To improve the aforementioned performance indexes, a number of control algorithms have been proposed such as proportional-integral (PI) control, H ∞ loop-shaping control, model predictive control, deadbeat control, sliding-mode control, repetitive control, adaptive control, and feedback linearization control (FLC).…”

Section: Introductionmentioning

confidence: 99%

An Observer-Based Optimal Voltage Control Scheme for Three-Phase UPS Systems

Kim

Mwasilu

Choi

et al. 2015

IEEE Trans. Ind. Electron.

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This paper proposes a simple optimal voltage control method for three-phase uninterruptible-power-supply systems. The proposed voltage controller is composed of a feedback control term and a compensating control term. The former term is designed to make the system errors converge to zero, whereas the latter term is applied to compensate for the system uncertainties. Moreover, the optimal load current observer is used to optimize system cost and reliability. Particularly, the closed-loop stability of an observer-based optimal voltage control law is mathematically proven by showing that the whole states of the augmented observer-based control system errors exponentially converge to zero. Unlike previous algorithms, the proposed method can make a tradeoff between control input magnitude and tracking error by simply choosing proper performance indexes. The effectiveness of the proposed controller is validated through simulations on MATLAB/Simulink and experiments on a prototype 600-VA testbed with a TMS320LF28335 DSP. Finally, the comparative results for the proposed scheme and the conventional feedback linearization control scheme are presented to demonstrate that the proposed algorithm achieves an excellent performance such as fast transient response, small steady-state error, and low total harmonic distortion under load step change, unbalanced load, and nonlinear load with the parameter variations.Index Terms-Optimal load current observer, optimal voltage control, three-phase inverter, total harmonic distortion (THD), uninterruptible power supply (UPS). NOMENCLATURE). I i Inverter phase current vector (I i = [i iA i iB i iC ] T ). I idq Current vector in the d − q frame of I i (I idq = [i id i iq ] T ).

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Section: Introductionmentioning

confidence: 99%

An Observer-Based Optimal Voltage Control Scheme for Three-Phase UPS Systems

Kim

Mwasilu

Choi

et al. 2015

IEEE Trans. Ind. Electron.

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“…The power line conditioners are able to compensate voltage and current harmonics, reactive power regulate voltage and current harmonics, reactive power regulate terminal voltage, suppress flickers and improve voltage balance in 3 phase system. [5,6,7] …”

Section: Introductionmentioning

confidence: 99%

Mitigation of Harmonics by Non-Linear Load Using Shunt Active Filter

2015

IJAERD

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Abstract-Most of the pollution issues created in power systems are due to the non-linear characteristics and fast switching of power electronic equipment. Power quality issues are becoming stronger because sensitive equipment will be more sensitive for market competition reasons, equipment will continue polluting the system more and more due to cost increase caused by the built-in compensation and sometimes for the lack of enforced regulations. Efficiency and cost are considered today almost at the same level. Active power filters have been developed over the years to solve these problems to improve power quality. In This Paper It has been designed a hysteresis band PWM (HBPWM) current controller for a three level voltage source inverter (VS I) .The HBPWM approach has been selected for the research, since it has the potential to provide an improved method of deriving non-linear models which is complementary to conventional techniques. The simulation model of HBPWM current controller is developed in S IMULINK/MATLAB environment.

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“…Nowadays, the nonlinear nature of electric loads is resulting in a strong demand for high-quality and reliable power sources from both customers and utilities [1]- [5]. To address this issue, uninterruptible power supplies (UPSs) are being extensively employed for critical loads such as communication systems, medical support systems, emergency systems, etc.…”

Section: Introductionmentioning

confidence: 99%

Design and Stability Analysis of a Fuzzy Adaptive SMC System for Three-Phase UPS Inverter

Naheem¹,

Choi²,

Mwasilu³

et al. 2014

Journal of Power Electronics

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This paper proposes a combined fuzzy adaptive sliding-mode voltage controller (FASVC) for a three-phase UPS inverter. The proposed FASVC encapsulates two control terms: a fuzzy adaptive compensation control term, which solves the problem of parameter uncertainties, and a sliding-mode feedback control term, which stabilizes the error dynamics of the system. To extract precise load current information, the proposed method uses a conventional load current observer instead of current sensors. In addition, the stability of the proposed control scheme is fully guaranteed by using the Lyapunov stability theory. It is shown that the proposed FASVC can attain excellent voltage regulation features such as a fast dynamic response, low total harmonic distortion (THD), and a small steady-state error under sudden load disturbances, nonlinear loads, and unbalanced loads in the existence of the parameter uncertainties. Finally, experimental results are obtained from a prototype 1 kVA three-phase UPS inverter system via a TMS320F28335 DSP. A comparison of these results with those obtained from a conventional sliding-mode controller (SMC) confirms the superior transient and steady-state performances of the proposed control technique.

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Harmonic Current Compensation based on Three-phase Three-level Shunt Active Filter using Fuzzy Logic Current Controller

Cited by 25 publications

References 25 publications

An Observer-Based Optimal Voltage Control Scheme for Three-Phase UPS Systems

An Observer-Based Optimal Voltage Control Scheme for Three-Phase UPS Systems

Mitigation of Harmonics by Non-Linear Load Using Shunt Active Filter

Design and Stability Analysis of a Fuzzy Adaptive SMC System for Three-Phase UPS Inverter

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