The DQ Axis With Fourier (DQF) Method for Harmonic Identification

Sujitjorn, Sarawut; Areerak, Kongpol; Kulworawanichpong, Thanatchai

doi:10.1109/tpwrd.2006.882465

Cited by 29 publications

(23 citation statements)

References 4 publications

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“…For the SRF algorithm, the modifications which have been implemented include replacement of LPFs with sliding window Fourier analysis (SWFA) which is renamed as dq with Fourier (dqF) [34,35], replacement of LPFs with wavelet approach [36], and simplification of overall control structure which is renamed as simplified SRF (SSRF) [17]. The work Energies 2017, 10, 2038 9 of 29 on both dqF and the wavelet algorithms are limited only to simulation study.…”

Section: Other Algorithmsmentioning

confidence: 99%

Control Algorithms of Shunt Active Power Filter for Harmonics Mitigation: A Review

et al. 2017

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Current harmonics is one of the most significant power quality issues which has attracted tremendous research interest. Shunt active power filter (SAPF) is the best solution to minimize harmonic contamination, but its effectiveness is strictly dependent on how quickly and accurately its control algorithms can perform. This manuscript reviews various types of existing control algorithms which have been employed for controlling operation of SAPF. Harmonic extraction, DC-link capacitor voltage regulation, current control and synchronizer algorithms are examined and discussed. The most relevant techniques which have been applied for each control algorithm are described and contrasted in an organized manner to identify their respective strengths and weaknesses. It is found that the applied control algorithms differ in two conditions: (1) the condition where harmonic current distortion is treated by the SAPF in the presence of non-ideal source voltage; and (2) the condition where multilevel inverter is employed as the circuit topology of SAPF.

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Section: Other Algorithmsmentioning

confidence: 99%

Control Algorithms of Shunt Active Power Filter for Harmonics Mitigation: A Review

et al. 2017

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“…The results from Table 3 show that the PQF algorithm can provide the best performance in term of %THD ,av and %unbalance after compensation. The %unbalance in this table can be calculated by (11). From Table 3, the %THD ,av and %unbalance of source currents before compensation are equal to 31.52% and 15.43%, respectively.…”

Section: Instantaneous Power Theory With Fouriermentioning

confidence: 99%

“…There are many methods for harmonic identification such as an instantaneous power theory (PQ) [5,6], a synchronous reference frame (SRF) [7], a synchronous detection (SD) [8], a sliding window Fourier analysis (SWFA) [9], an a-b-c reference frame [10], and a DQ-axis with Fourier (DQF) [11].…”

Section: Introductionmentioning

confidence: 99%

Instantaneous Power Theory with Fourier and Optimal Predictive Controller Design for Shunt Active Power Filter

Tiyarachakun

Areerak

2014

Modelling and Simulation in Engineering

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This paper presents a novel harmonic identification algorithm of shunt active power filter for balanced and unbalanced three-phase systems based on the instantaneous power theory called instantaneous power theory with Fourier. Moreover, the optimal design of predictive current controller using an artificial intelligence technique called adaptive Tabu search is also proposed in the paper. These enhancements of the identification and current control parts are the aim of the good performance for shunt active power filter. The good results for harmonic mitigation using the proposed ideas in the paper are confirmed by the intensive simulation using SPS in SIMULINK. The simulation results show that the enhanced shunt active power filter can provide the minimum %THD (Total Harmonic Distortion) of source currents and unity power factor after compensation. In addition, the %THD also follows the IEEE Std. 519-1992.

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“…Under balanced and sinusoidal source voltage conditions, various research works on this particular algorithm have been reported in the literature such as synchronous reference frame (SRF) [20][21][22], instantaneous power (pq) theory [2,[23][24][25], dq-axis with Fourier (dqF) [26], fast Fourier transform (FFT) [27], synchronous detection (SD) [28,29] and artificial neural network (ANN) [30,31]. Nevertheless, among the available algorithms, pq theory algorithm provides the best advantages which include simple design, increased speed and fewer calculations, and thus makes it more likely to be implemented practically.…”

Section: Introductionmentioning

confidence: 99%

A Refined Self-Tuning Filter-Based Instantaneous Power Theory Algorithm for Indirect Current Controlled Three-Level Inverter-Based Shunt Active Power Filters under Non-sinusoidal Source Voltage Conditions

et al. 2017

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Abstract:In this paper, a refined reference current generation algorithm based on instantaneous power (pq) theory is proposed, for operation of an indirect current controlled (ICC) three-level neutral-point diode clamped (NPC) inverter-based shunt active power filter (SAPF) under non-sinusoidal source voltage conditions. SAPF is recognized as one of the most effective solutions to current harmonics due to its flexibility in dealing with various power system conditions. As for its controller, pq theory has widely been applied to generate the desired reference current due to its simple implementation features. However, the conventional dependency on self-tuning filter (STF) in generating reference current has significantly limited mitigation performance of SAPF. Besides, the conventional STF-based pq theory algorithm is still considered to possess needless features which increase computational complexity. Furthermore, the conventional algorithm is mostly designed to suit operation of direct current controlled (DCC) SAPF which is incapable of handling switching ripples problems, thereby leading to inefficient mitigation performance. Therefore, three main improvements are performed which include replacement of STF with mathematical-based fundamental real power identifier, removal of redundant features, and generation of sinusoidal reference current. To validate effectiveness and feasibility of the proposed algorithm, simulation work in MATLAB-Simulink and laboratory test utilizing a TMS320F28335 digital signal processor (DSP) are performed. Both simulation and experimental findings demonstrate superiority of the proposed algorithm over the conventional algorithm.

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The DQ Axis With Fourier (DQF) Method for Harmonic Identification

Cited by 29 publications

References 4 publications

Control Algorithms of Shunt Active Power Filter for Harmonics Mitigation: A Review

Control Algorithms of Shunt Active Power Filter for Harmonics Mitigation: A Review

Instantaneous Power Theory with Fourier and Optimal Predictive Controller Design for Shunt Active Power Filter

A Refined Self-Tuning Filter-Based Instantaneous Power Theory Algorithm for Indirect Current Controlled Three-Level Inverter-Based Shunt Active Power Filters under Non-sinusoidal Source Voltage Conditions

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