This paper presents the control of the active filter
by Duty Cycle Modulation (DCM) for the harmonic pollution control of a
three-phase electrical system. Several research works have preceded this work,
but most of them deal with the control by pulse-width modulation and the
differences lie around the THD reduction performance, the quality of the wave
obtained, the simplicity of the scheme and the cost of the control. For this
purpose, we propose a very innovative approach to active filter control which
aims at reducing the current THD at a lower rate than pulse-width modulation
techniques improving at the same time the wave quality with a more simplified
control scheme. First we present the schematic diagram of the active filter,
then we present the design of the control of this active filter based on the
real and imaginary instantaneous power method which uses the algebraic “Clark”
transformation. The Duty Cycle Modulation controller is used to obtain the
required control commands to be injected to the inverter. We then developed a
simulink model of the active filter to validate this study. The simulations
were performed in the Matlab/Simulink environment. The results obtained show a
significant improvement on the harmonic current control techniques for the THD
of 1.02% which was 26.25%, the elimination of noise in the signal and the
simplicity of the control with an easier implementation than the pulse width
modulation (PWM) make the Duty Cycle Modulation (DCM) control a very promising
tool.
References
[1]
Schneider Electric. Guide de l’installation électrique-2009.
[2]
Kanaan, H.Y. and Al-Haddad, K. (2004) Comparative Evaluation of Average Model Based Control Schemes Applied to a Three-Phase Series Active Power Filter for Voltage Harmonic Cancellation. Proceedings of 13th IEEE International Symposium on Industrial Electronic (ISIE’04), Ajaccio, France, 4-7 May 2004, 783-789.
https://doi.org/10.1109/ISIE.2004.1571913
[3]
Kanaan, H.Y., Hayek, A. and Al-Haddad, K. (2006) Nonlinear Control Design for a PWM Three-Phase Four-Wire Shunt Active Power Filter Based on the State-Space Averaged Model. Proceedings of 12th International Conference on Harmonics and Quality of Power (ICHQP’06), Cascais, Portugal, 1-5 October 2006.
[4]
Montero, M.I.M., Cadaval, E.R. and Gonzalez, F.B. (2011) Comparison of Control Strategies for Shunt Active Power Filters in Three-Phase Four-Wire Systems. IEEE Transactions on Power Electronics, 22, 229-236.
https://doi.org/10.1109/TPEL.2006.886616
[5]
Mbihi, J., Ndjali Beng, F. and Mbouenda, M. (2005) Modeling and Simulation of a Class of Duty-Cycle Modulators for Industrial Instrumentation. Iranian Journal of Electrical and Computer Engineering, 4, 121-128.
[6]
Danwé Sounsoumou, Y.P., Djalo, H., Mbihi, J. and et Effa, J.Y. (2017) Modelisation Virtuelle d’un nouveau schema de réglage de Boost à commande rapprochée par modulation en rapport cyclique. Journal Afrique Science, 13, 176-185.
[7]
Obono Biyobo, A., Nneme Nneme, L. and Mbihi, J. (2018) A Novel Sine Duty-Cycle Modulation Control Scheme for Photovoltaic Single-Phase Power Inverters. Wseas Transactions on Circuits and Systems, 17, 105-113.
[8]
Akagi, H. (1998) Control Strategy and Site Selection of a Shunt Active Filter for Damping of Harmonic Propagation in Power Distribution Systems. Okayama University, Okayama. https://doi.org/10.1109/61.568259
