NDLI: Grid voltage offset and harmonics rejection using second order generalized integrator and kalman filter technique

Content Provider	IEEE Xplore Digital Library
Author	Reza, Md. Shamim Ciobotaru, Mihai Agelidis, Vassilios G.
Copyright Year	2012
Description	Author affiliation: School of Electrical Engineering and Telecommunications, Australian Energy Research Institute, The University of New South Wales, Kensington, Sydney, 2052, Australia (Reza, Md. Shamim; Ciobotaru, Mihai; Agelidis, Vassilios G.)
Abstract	This paper proposes the application of second order generalized integrator (SOGI) and Kalman filter (KF) technique for the rejection of DC offset and harmonics from the distorted grid voltage waveform. The SOGI is used to estimate the orthogonal waveforms of grid voltage fundamental frequency component. On the other hand, the linear Kalman filter (LKF) is used to reject the DC offset and harmonics present in the distorted grid voltage waveform. The resonance and harmonic frequencies of the SOGI and LKF, respectively, are provided by the frequency locked loop (FLL). The proposed technique provides better results to reject the DC offset and harmonics as compared to the multiple SOGI (MSOGI) technique. The improved performance of the proposed technique is due to the use of LKF which not only rejects the DC offset and harmonics but also non-sensitive to the change of SOGI's gain. Synthetically generated grid voltage waveforms are used in MATLAB/Simulink to depict the superior performance of the proposed SOGI-LKF technique as compared to the MSOGI with/without offset rejection technique.
Starting Page	104
Ending Page	111
File Size	1008466
Page Count	8
File Format	PDF
ISBN	9781457720857
DOI	10.1109/IPEMC.2012.6258864
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-02
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Harmonic analysis Power harmonic filters Frequency locked loops Transfer functions Harmonic distortion Resonant frequency Kalman filters second order generalized integrator (SOGI) DC Offset frequency locked loop (FLL) linear Kalman filter (LKF)
Content Type	Text
Resource Type	Article

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