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TitleVarious strategies comparison of NPC inverter current control connected to the grid for photovoltaic system
Author(s)Hlaili, Manel
Hfaiedh, Mechergui
Exposto, Bruno
Monteiro, Vítor Duarte Fernandes
Afonso, João L.
KeywordsCurrent Control
Grid connected
Neutral Point Clamped Inverter
Periodic Sampling
Photovoltaic Systems
Pulse Width Modulation PWM
Issue date15-Apr-2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
JournalInternational Conference on Sciences and Techniques of Automatic Control and Computer Engineering
Abstract(s)Multilevel inverters offer advantages in terms of the output waveform quality due to the increased number of levels used in the output voltage modulation such us three level NPC inverter. The output current and voltage is the same for NPC and half bridge but the difference is the way to generate the signal and its current control. This paper presents a comparative study of four current control techniques such as hysteresis current controller, Predictive current controller, Proportional Integral controller and Periodic sampling current controller. Comparison is done based on switching frequency, harmonic distortion and dynamic response of each method. Simulation of these controllers is done in PSIM environment. Waveforms of output current injected into the grid, THD etc are shown for different current controllers.
TypeConference paper
AccessRestricted access (UMinho)
Appears in Collections:CAlg - Artigos em livros de atas/Papers in proceedings

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