A PLL Scheme for Synchronization with Grid Voltage Phasor in Active Power Filter Systems
DOI:
https://doi.org/10.2478/v10144-010-0035-xKeywords:
active filters, phase locked loopsAbstract
Voltage source inverters connected to the grid in applications such as active power filters require synchronization with the grid voltage. Since in practice the grid voltage can be unbalanced and distorted, but the operation of the whole active filter control system is strongly dependant on precise estimation of grid voltage phase, the fundamental positive sequence phasor of the grid voltage has to be extracted. In this paper a system for smooth estimation of the position of the voltage phasor at the point of common coupling of a parallel active filter system is presented using a sinusoidal signal integrator and a simple software PLL. The performance of the proposed system is verified by simulation and experimental results. The proposed PLL scheme can also be used in other vector oriented control systems.References
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X. Yuan, W. Merk, H. Stemmler, and J. Allmeling, Stationary-frame generalized integrators for current control of active power filters with zero steady-state error for current harmonics of concern under unbalanced and distorted operating conditions, IEEE Trans. Ind. Appl., vol. 38, no. 2, 2002.
Krievs O., Ribickis L., Frequency selective control of a parallel active filter with resonance filter regulators, Latvian Journal of Physics and Technical Sciences, Vol.46, Riga, 2009.
R. Bojoi, G. Griva, L. Limongi, C. Pica, A. Tenconi, Performance Comparison of Frequency Selective Current Controllers for Three-Phase Active Power Filters, IEEE Ind. Elec. Soc.
Kazmierkowski M. P., Malesani L. (1998.) Current Control Techniques for Three-Phase Voltage-Source pwm Converters: a Survey. IEEE Trans. on Industrial Electronics, vol.45, No.5. (pp.691-703).
Roland E. Best, Phase-Locked Loops: Design, Simulation, and Applications, 2007.
X. Yuan, W. Merk, H. Stemmler, and J. Allmeling, Stationary-frame generalized integrators for current control of active power filters with zero steady-state error for current harmonics of concern under unbalanced and distorted operating conditions, IEEE Trans. Ind. Appl., vol. 38, no. 2, 2002.
Krievs O., Ribickis L., Frequency selective control of a parallel active filter with resonance filter regulators, Latvian Journal of Physics and Technical Sciences, Vol.46, Riga, 2009.
R. Bojoi, G. Griva, L. Limongi, C. Pica, A. Tenconi, Performance Comparison of Frequency Selective Current Controllers for Three-Phase Active Power Filters, IEEE Ind. Elec. Soc.
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2010-01-01
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Copyright (c) 2010 Oskars Krievs, Ingars Steiks, Leonids Ribickis (Author)
This work is licensed under a Creative Commons Attribution 4.0 International License.
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Krievs, O., Steiks, I., & Ribickis, L. (2010). A PLL Scheme for Synchronization with Grid Voltage Phasor in Active Power Filter Systems. Electrical, Control and Communication Engineering, 27(1), 134-137. https://doi.org/10.2478/v10144-010-0035-x
