Title:
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Model-based control for a three-phase shunt active power filter
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Author:
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Guzmán Solà, Ramon; García de Vicuña Muñoz de la Nava, José Luis; Morales López, Javier; Castilla Fernández, Miguel; Miret Tomàs, Jaume
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial; Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. SEPIC - Sistemes Electrònics de Potència i de Control |
Abstract:
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This paper presents a robust model-based control
in natural frame for a three-phase shunt active power filter.
For the proposed control method a linear converter model is
deduced. Then, this model is used in a Kalman filter in order
to estimate the system state-space variables. Even though the
states estimation do not match the variables of the real system,
it has allowed to design three sliding mode controllers providing
the following features to the closed loop system: a) robustness
due to the fact that control specifications are met independently
of any variation in the system parameters; b) noise immunity,
since a Kalman filter is applied; c) a lower THD of the current
delivered by the grid compared with the standard solution using
measured variables; d) the fundamental component of the voltage
at point of common coupling is estimated even in the case of
a distorted grid; and e) a reduction in the number of sensors.
Thanks to this solution the sliding surfaces for each controller are
independent. This decoupling property of the three controllers
allows using a fixed switching frequency algorithm that ensures
a perfect current control. Finally, experimental results validate
the propos |
Subject(s):
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-Àrees temàtiques de la UPC::Energies::Energia elèctrica::Automatització i control de l'energia elèctrica -Àrees temàtiques de la UPC::Enginyeria electrònica::Electrònica de potència -Electric driving -Kalman filtering -Electric filters, Active -Sliding mode control -Current control -LCL filter -Sliding mode control -Kalman filter -Voltage sensorless control -Control elèctric -Kalman, Filtratge de |
Rights:
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Document type:
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Article - Submitted version Article |
Published by:
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Institute of Electrical and Electronics Engineers (IEEE)
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