Garcerá Sanfeliú, G.; González Medina, R.; Figueres Amorós, E.; Sandia Paredes, J. (2012). Dynamic modeling of DC-DC converters with peak current control in double-stage photovoltaic grid-connected inverters. International Journal of Circuit Theory and Applications. 40(8):793-813. doi:10.1002/cta.756
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/38114
Title:
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Dynamic modeling of DC-DC converters with peak current control in double-stage photovoltaic grid-connected inverters
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Author:
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Garcerá Sanfeliú, Gabriel
González Medina, Raúl
Figueres Amorós, Emilio
Sandía Paredes, Jesús
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UPV Unit:
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Universitat Politècnica de València. Departamento de Ingeniería Electrónica - Departament d'Enginyeria Electrònica
Universitat Politècnica de València. Grupo de Sistemas Electrónicos Industriales
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Issued date:
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Abstract:
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In photovoltaic (PV) double-stage grid-connected inverters a high-frequency DC-DC isolation and voltage step-up stage is commonly used between the panel and the grid-connected inverter. This paper is focused on the modeling ...[+]
In photovoltaic (PV) double-stage grid-connected inverters a high-frequency DC-DC isolation and voltage step-up stage is commonly used between the panel and the grid-connected inverter. This paper is focused on the modeling and control design of DC-DC converters with Peak Current mode Control (PCC) and an external control loop of the PV panel voltage, which works following a voltage reference provided by a maximum power point tracking (MPPT) algorithm. In the proposed overall control structure the output voltage of the DC-DC converter is regulated by the grid-connected inverter. Therefore, the inverter may be considered as a constant voltage load for the development of the small-signal model of the DC-DC converter, whereas the PV panel is considered as a negative resistance. The sensitivity of the control loops to variations of the power extracted from the PV panel and of its voltage is studied. The theoretical analysis is corroborated by frequency response measurements on a 230 W experimental inverter working from a single PV panel. The inverter is based on a Flyback DC-DC converter operating in discontinuous conduction mode (DCM) followed by a PWM full-bridge single-phase inverter. The time response of the whole system (DC-DC + inverter) is also shown to validate the concept. Copyright © 2011 John Wiley & Sons, Ltd. In photovoltaic (PV) double-stage gridconnected inverters a high-frequency DC-DC isolation and voltage step-up stage is commonly used between the panel and the grid-connected inverter. This paper is focused on the modeling and control design of DC-DC converters with Peak Current mode Control (PCC) and an external control loop of the PV panel voltage, which works following a voltage reference provided by a maximum power point tracking (MPPT) algorithm. The sensitivity of the control loops to variations of the power extracted from the PV panel and of its voltage is studied. Copyright © 2011 John Wiley & Sons, Ltd. Copyright © 2011 John Wiley & Sons, Ltd.
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Subjects:
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Current mode control
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DC-DC power conversion
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Inverters
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Modeling
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Photovoltaic power systems
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Constant voltage
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Control loop
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Discontinuous conduction mode
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External control
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Flyback
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Frequency response measurement
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Full-bridge
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Grid connected inverters
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High frequency HF
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Maximum Power Point Tracking
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Modeling and control
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Output voltages
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Overall control structure
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Peak current control
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Peak current mode control
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Photovoltaic
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PV panel
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Single-phase inverters
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Small signal model
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Time response
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Voltage reference
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DC-DC converters
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Frequency response
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HVDC power transmission
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Models
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Photovoltaic cells
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Sensitivity analysis
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Electric inverters
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Copyrigths:
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Reserva de todos los derechos
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Source:
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International Journal of Circuit Theory and Applications. (issn:
0098-9886
)
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DOI:
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10.1002/cta.756
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Publisher:
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Wiley
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Publisher version:
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http://onlinelibrary.wiley.com/doi/10.1002/cta.756/abstract;jsessionid=64A7DB6D8CEF48D2EE19BA570A91F122.f02t03
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Project ID:
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Spanish Ministry of Science and Innovation (MICINN) [ENE2009-13998-C02-02]
company AUSTRIAMICROSYSTEMS
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Thanks:
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This work was supported by the Spanish Ministry of Science and Innovation (MICINN) under grant ENE2009-13998-C02-02. The company AUSTRIAMICROSYSTEMS co-financed this project.
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Type:
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Artículo
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