Control Strategy for Selective Compensation of Power Quality Problems through Three-Phase Four-Wire UPQC

Pal, Yash; Swarup, Akhilesh; Singh, Bhim

doi:10.6113/jpe.2011.11.4.576

Cited by 8 publications

(3 citation statements)

References 21 publications

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“…Time domain correction methods are solely based on instantaneous derivation of compensating commands which are in the form of either voltage or current signals from distorted signals (Singh and Solanki, 2009;Pal et al, 2011;Khadkikar and Chandra, 2011). Among the various time domains APF control methods, the SRF-based control method is one of the most conventional and the most practical methods (Salmeron et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

A recursive discrete Kalman filter for the generation of reference signal to UPQC with unbalanced and distorted supply conditions

Kumar

Rajeswari²

2019

IJMIC

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This paper describes the development of a robust control technology adapting Kalman filter in order to attend to the problems that arise in power quality. This methodology makes use of a three-phase three-wire unified power quality conditioner (UPQC) under unbalanced and distorted supply conditions. In spite of harmonics and frequency oscillation, the Kalman filter determines the amplitude, phase angle and frequency of load currents and source voltages. The main ideas are to use Kalman filtering algorithm to acquire fundamental component of load current and source voltage and to use the least squares method which is relatively simple and faster. The proposed robust Kalman filter-based UPQC system mitigated the issues such as voltage sag, voltage swell, harmonics distortions (voltage and current), and unbalanced supply voltage and power factor. The results are justified using the MATLAB/Simulink software to support the Kalman filter-based control algorithm under steady state and dynamic operating conditions.

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Section: Introductionmentioning

confidence: 99%

A recursive discrete Kalman filter for the generation of reference signal to UPQC with unbalanced and distorted supply conditions

Kumar

Rajeswari²

2019

IJMIC

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“…Active power filters(APFs) [1][2][3][4][5][6][7][8][9][10][11] have been accepting as an efficient device for compensating the harmonics and reactive power of nonlinear loads such as thyristor controlled rectifiers or variable speed drives. In order to compensate the harmonics and reactive power using APFs, APFs should be operated to the instantaneous rectification mode and the instantaneous inversion mode during the compensation operation.…”

Section: Introductionmentioning

confidence: 99%

Graphical Representation of the Instantaneous Compensation Power Flow for Single-Phase Active Power Filters

Jung¹

2013

Journal of Electrical Engineering and Technology

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-The conventional graphical representation of the instantaneous compensation power flow for single-phase active power filters(APFs) simply represents the active power flow and the reactive power flow which flowing between the power source and the active filter / the load. But, this method does not provide the information about the rectification mode and the compensation mode of APFs, especially, the loss for each mode was not considered at all. This is very important to understand the compensation operation characteristics of APFs. Therefore, this paper proposes the graphical representation of the instantaneous compensation power flow for single-phase APFs considering the instantaneous rectification mode and the instantaneous inversion mode. Three cases are verified in this paper -without compensation, with compensation of the active power 'p' and the fundamental reactive power 'q', and with compensation of only the distorted power 'h'. To ensure the validity of the proposed approach, PSIM simulation is achieved. As a result, we could confirm that the proposed approach was easy to explain the instantaneous compensation power flow considering the instantaneous rectification mode and the instantaneous inversion mode of APFs, also, Total Harmonic Distortion(THD)/Power Factor (P.F) and Fast Fourier Transform(FFT) analysis were compared for each case.

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“…These nonlinear loads draw a large amount of distorted currents from utilities resulting in significant power quality contamination and severe electromagnetic interference in the nearby sensitive loads [1]. Active power filters (APFs) are considered to be the most effective solution for harmonic pollution problems, and they have been extensively studied in recent literature [2]- [4].…”

Section: Introductionmentioning

confidence: 99%

Control Strategies for Multilevel APFs Based on the Windowed-FFT and Resonant Controllers

Han¹

2012

Journal of Power Electronics

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This paper presents control strategies for cascaded H-bridge multilevel active power filters (APFs). A current loop controller is implemented using a proportional-resonant (PR) regulator, which achieves zero steady-state error at target frequencies. The power balancing mechanism for the dc-link capacitor voltages is analyzed and a voltage balancing controller is presented. To mitigate the picket-fence effect of the conventional FFT algorithm under asynchronous sampling conditions, the Hanning Windowed-FFT algorithm is proposed for reference current generation (RCG). This calculates the frequency, amplitude and phase of individual harmonic components accurately and as a result, selective harmonic compensation (SHC) is achieved. Simulation and experimental results are presented, which verify the validity and effectiveness of the devised control algorithms.

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Control Strategy for Selective Compensation of Power Quality Problems through Three-Phase Four-Wire UPQC

Cited by 8 publications

References 21 publications

A recursive discrete Kalman filter for the generation of reference signal to UPQC with unbalanced and distorted supply conditions

A recursive discrete Kalman filter for the generation of reference signal to UPQC with unbalanced and distorted supply conditions

Graphical Representation of the Instantaneous Compensation Power Flow for Single-Phase Active Power Filters

Control Strategies for Multilevel APFs Based on the Windowed-FFT and Resonant Controllers

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