Realization of a Digital Control Algorithm

Sozański, Krzysztof

doi:10.1007/978-1-4471-2786-4_4

Cited by 15 publications

(8 citation statements)

References 17 publications

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“…These distortions are caused by a too low slew rate of the APF output (compensating) currents. The methods for elimination of such distortions are described in publications [9,[10][11][12][13][14].…”

Section: Experimental Test Resultsmentioning

confidence: 99%

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Three phase active power filter with selective harmonics elimination

Sozański¹

2016

Archives of Electrical Engineering

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This paper describes a three phase shunt active power filter with selective harmonics elimination. The control algorithm is based on a digital filter bank. The moving Discrete Fourier Transformation is used as an analysis filter bank. The correctness of the algorithm has been verified by simulation and experimental research. The paper includes exemplary results of current waveforms and their spectra from a three phase active power filter.

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Section: Experimental Test Resultsmentioning

confidence: 99%

“…In the future it is planned to modify the APF output circuit in order to apply an LCL filter. The digital analysis filter bank is used for harmonics detection [11][12][13]. A simple summing block is used in the control circuit as a synthesis filter bank.…”

Section: The Control Algorithmmentioning

confidence: 99%

Three phase active power filter with selective harmonics elimination

Sozański¹

2016

Archives of Electrical Engineering

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“…It consists of a power electronic circuit, which includes electronic switches such as IGBTs, MOSFETs, capacitors, magnetic components, and a digital controller. The control algorithm is implemented in the digital controller, which is responsible for controlling the operation of the power electronic circuit [28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47].…”

Section: Power Electronic Circuitmentioning

confidence: 99%

“…Consequently, the number of publications devoted to power electronics is enormous (e.g., [1][2][3][4][5][6][7][8][9][10]), and similarly, many publications describe problems of digital signal processing (e.g., [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]). Only a few publications describe digital signal processing in the context of power electronics [28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47].…”

Section: Introductionmentioning

confidence: 99%

Overview of Signal Processing Problems in Power Electronic Control Circuits

Sozański

2023

Energies

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This paper examines various aspects related to digital signal processing in digital control circuits used in power electronics. The discussion focuses on several common issues, including the sampling rate of signals (including phenomena such as aliasing and synchronization), coherent sampling, jitter of sampling pulses, sequential versus simultaneous sampling in multichannel systems, signal resolution (including signal-to-noise ratio, noise-shaping circuits, and changes in sampling speed), interpolation and decimation, and the conversion of analog circuits into digital form. One of the key contributions of this paper is the introduction of a new formula for calculating the resultant signal-to-noise ratio for three-stage digital control circuits. By carefully considering and correcting for sources of error, it is possible to increase the signal-to-noise ratio and minimize distortion components. This, in turn, leads to improved output/input current and voltage parameters, which can have a positive impact on the overall quality of energy processing in power electronic circuits.

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“…The traditional method based on the instantaneous reactive power theory [2,3,4,5,6], when the load steps dynamically, the DClink voltage may jump greatly. The SDFT method based on the abc coordinate system has been widely used in harmonic refrence current calculation [6,7,8,9], but it has an inherent latency of 1 fundamental grid cycle [10,11], which makes the system dynamic performance becomes poor, reducing the compensation accuracy.…”

Section: Introductionmentioning

confidence: 99%

An optimized reference current detection method for active power filter

Chen

2017

IEICE Electron. Express

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An optimized reference current detection method based on synchronous reference frame transformation and sliding discrete Fourier transform (SDFT) is proposed. The proposed method can be used to extract characteristic harmonic currents as the reference current of system from the load currents by fewer sampling points, meanwhile, the numbers of harmonics need to be calculated will reduce to half of traditional method, it means that the proposed method can reduce the computational effort and easy to engineering implementation, while achieving better dynamic performance compared with other methods. The results of simulation and experiment show the validity of this method.

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Realization of a Digital Control Algorithm

Cited by 15 publications

References 17 publications

Three phase active power filter with selective harmonics elimination

Three phase active power filter with selective harmonics elimination

Overview of Signal Processing Problems in Power Electronic Control Circuits

An optimized reference current detection method for active power filter

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