Please use this identifier to cite or link to this item: https://doi.org/10.1109/TIE.2012.2202350
Title: Application of four-switch-based three-phase grid-connected inverter to connect renewable energy source to a generalized unbalanced microgrid system
Authors: Dasgupta, S.
Mohan, S.N.
Sahoo, S.K. 
Panda, S.K. 
Keywords: Four-switch-based three-phase inverter (b-4 topology)
generalized three-phase microgrid bus
nonlinear load
sine-pulse-width-modulation (PWM) (SPWM)-based control
Issue Date: 2013
Source: Dasgupta, S., Mohan, S.N., Sahoo, S.K., Panda, S.K. (2013). Application of four-switch-based three-phase grid-connected inverter to connect renewable energy source to a generalized unbalanced microgrid system. IEEE Transactions on Industrial Electronics 60 (3) : 1204-1215. ScholarBank@NUS Repository. https://doi.org/10.1109/TIE.2012.2202350
Abstract: In this paper, a four-power-semiconductor-switch-based three-phase inverter is proposed for renewable energy source integration to a generalized microgrid system. The proposed topology b-4 of three-phase inverter is investigated to make the commercial microgrid system to be cost effective and hardware optimized. A simple sine-pulse-width-modulation-based (SPWM) control strategy is proposed for the b-inverter topology instead of the traditional complex four-switch-based space vector techniques. The overall control structure is implemented using the Lyapunov function-based nonlinear controller to track the inverter current directly in the a-b-c frame so that a specific amount of active and reactive grid power flow to the grid can be controlled in a decoupled manner along with low total harmonic distortion of grid currents in the presence of nonlinear load at the point of common coupling (PCC). A novel technique of using the spatial repetitive controller (SRC) is also proposed to eliminate the effect of midpoint voltage fluctuation of the dc link even in the case of asymmetrically split dc-link capacitors without any extra voltage or current sensors unlike conventional methods. Detailed experimental results are provided to show the efficacy of the proposed hardware system for grid-connected applications in the microgrid. © 2012 IEEE.
Source Title: IEEE Transactions on Industrial Electronics
URI: http://scholarbank.nus.edu.sg/handle/10635/55131
ISSN: 02780046
DOI: 10.1109/TIE.2012.2202350
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