A Fast Series Active Filter using Sliding Mode Control to Correct and Regulate Unbalance Voltage in Three-Phase System

Chatchanay, Theerayuth

doi:10.3844/ajeassp.2009.393.398

Cited by 5 publications

(6 citation statements)

References 7 publications

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“…Improved solution to harmonic problem uses a hybrid active filter, consists of shunt active and passive filter or series active and passive filters [13][14][15]. Recently, in order to improve the power quality and to correct unbalance voltage in the distribution system, a series active power filter which is connected in series with neutral conductor have been proposed [16][17][18][19]. The existing methods used various controllers like instantaneous reactive power theory [20] and sliding mode control theory.…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of Solar PV for Power Quality Enhancement in Three-Phase Four-Wire Distribution System

Sekar¹,

Anita²

2015

Journal of Electrical Engineering and Technology

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-This paper presents a new technique for enhancing power quality by reducing harmonics in the neutral conductor. Three-Phase Four-Wire (3P4W) system is commonly used where single and three phase loads are connected to Point of Common Coupling (PCC). Due to unbalance loads, the 3P4W distribution system becomes unbalance and current flows in the neutral conductor. If loads are non-linear, then the harmonic content of current will flow in neutral conductor. The neutral current that may flow towards transformer neutral point is compensated by using a series active filter. In order to reduce the harmonic content, the series active filter is connected in series with the neutral conductor by which neutral and phase current harmonics are reduced significantly. In this paper, solar PV based inverter circuit is proposed for compensating neutral current harmonics. The simulation is carried out in MATLAB/SIMULINK and also an experimental setup is developed to verify the effectiveness of the proposed method.

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Section: Introductionmentioning

confidence: 99%

Design and Implementation of Solar PV for Power Quality Enhancement in Three-Phase Four-Wire Distribution System

Sekar¹,

Anita²

2015

Journal of Electrical Engineering and Technology

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“…Many studies and researches were and continue to be carried out, since 1936 till now (Moussa et al, 2010;Chatchanayuenyong, 2009;Faiz et al, 2004), to show causes and effects of high unbalance voltage supply level on stator operating conditions and motor performances. In fact, unbalance level is considered to be a good indicator of the AC electric motors health.…”

Section: Introductionmentioning

confidence: 99%

“…• Single phase, two-phase or three-phase undervoltage unbalance • Single phase, two-phase or three-phase overvoltage unbalance • Unequal single phase angle or two phase angles displacement • One phase load nearby the motor • Unbalanced distribution of single-phase loads on the power system • Single-phase to ground defaults These induction motor functioning conditions may lead to many damages and performance reduction of the motor (Moussa et al, 2010;Chatchanayuenyong, 2009;Tallam et al, 2007;Siddique et al, 2004) which are:…”

Section: Introductionmentioning

confidence: 99%

Multiresolution Analysis Based Effective Diagnosis of Induction Motors

Sethom¹,

Ghedamsi²

2012

American Journal of Applied Sciences

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Problem statement: Effective detection and localization of unbalance voltage supply affecting an induction motor may be compromised in presence of additionnal noise. Approach: In order to overcome the non possibility of the default detection and localization in presence of noise, the use of the discrete wavelet transform and especially the MultiResolution Analysis algorithm, to remove efficiently the noise associated to the stator currents is proposed. Results: Simulation results show that the de-noised stator current is a good estimation of the non disturbed one. They show also that the default occurrence instant can be well detected starting from high frequency detail signal. Furthermore, the signal details which characterize the default are not smoothed and still characterize the default occurrence. Experimental results validate the de-noising approach efficiency and the effective unbalance detection considering the MRA technique. Conclusion: In this study, current signal denoising problem is studied in order to perform an effective detection of an unbalance voltage supply induction machine default. It can be deduced that the wavelet transform and particularly the MRA technique is a good and powerful solution for both non linear noise filtering and transient default detection. Both simulation and experimental results show clearly that the stator currents MRA allows not only to detect when the default appears but also helps to separate the useful signal from noise without affecting or suppressing the default transient information.

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“…The main function of an FDI scheme is to generate an alarm when a fault occurs (Fault Detection) and then to determine the location of the fault (fault isolation). There is a large variety of FDI approaches (Patton and Frank, 2000;Chen and Patton, 1999;Gertler, 1998;Prasannamoorthy and Devarajan, 2011;Chatchanayuenyong, 2009). The most effective methods for model based FDI are based on observers where the measured plant output is compared to the output of an observer and the output error are used to form a residual (Patton and Frank, 2000;Chen and Patton, 1999).…”

Section: Introductionmentioning

confidence: 99%

Sliding Mode Observer-Based Fault Reconstruction for Uncertain Linear Systems

Dhahri¹

2011

American Journal of Applied Sciences

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Problem statement: Fault reconstruction scheme is different from the majority of Fault Detection and Isolation (FDI) methods described in the literature in the sense that it not only detects and isolates the fault, but provides an estimate of the fault. This approach is very useful for incipient faults and slow drifts, which are very difficult to detect. Also, this approach is very useful for Fault Tolerant Control (FTC) systems in the sense that instead of reconfiguration of the control system, the faulty sensors or actuators can be corrected and the simple control method can still be effectively used. Motivated by these useful features of fault, we are interested in performing observer-based fault reconstruction scheme for uncertain linear systems. Approach: In this study we present a scheme to design robust sliding mode observer for linear systems where both faults and uncertainties are considered. The objective is to derive a sufficient condition using Linear Matrix Inequalities (LMIs) for the stability of the observer. The so-called equivalent output error injection is discussed for fault reconstruction. Results: we get a simple sliding mode observer design for detection and reconstruction of faults for uncertain linear systems. Conclusion: With the real model of the seventh-order aircraft we show that the methods provided by present paper have good performances.

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A Fast Series Active Filter using Sliding Mode Control to Correct and Regulate Unbalance Voltage in Three-Phase System

Cited by 5 publications

References 7 publications

Design and Implementation of Solar PV for Power Quality Enhancement in Three-Phase Four-Wire Distribution System

Design and Implementation of Solar PV for Power Quality Enhancement in Three-Phase Four-Wire Distribution System

Multiresolution Analysis Based Effective Diagnosis of Induction Motors

Sliding Mode Observer-Based Fault Reconstruction for Uncertain Linear Systems

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