New control strategy to allow the photovoltaic systems operation under grid faults
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Cita com:
hdl:2117/10695
Tipus de documentComunicació de congrés
Data publicació2009
Condicions d'accésAccés obert
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
This paper presents a new control strategy
that allows the photovoltaic system operation under grid
faults without overcurrent and assuring grid sinusoidal
currents. The current limiter is made indirectly by using
an active power limiter that is calculated dynamically
based on the grid positive-sequence voltage. The paper
also shows that the classic control strategies used in the
PV systems cause harmonic current injections on the
electrical grid and dangerous overcurrents when voltage
sags occur. The strategy presented here overcomes these
drawbacks and allows the inverter operation under any
unbalanced condition. The control is made on stationary
reference frame using Proportional-Resonant current
control. This new control strategy is compared to the
classic strategy through simulations in PSCAD/EMTDC
and the experimental results prove its effectiveness.
CitacióAzevedo, G. [et al.]. New control strategy to allow the photovoltaic systems operation under grid faults. A: Brazilian Power Electronics Conference. "2009 Brazilian Power Electronics Conference". Bonito: 2009, p. 196-201.
ISBN978-1-4244-3369-8
Versió de l'editorhttp://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5347705
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