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Analysis, design and implementation of a quasi-proportional-resonant controller for multifunctional capacitive-coupling grid-connected inverter
Ye,Tao1; Dai,Ningyi1; Lam,Chi Seng1,2; Wong,Man Chung1; Guerrero,Josep M.3
2015-10-27
Source Publication2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015
Pages2506-2513
AbstractThe capacitive-coupling grid-connected inverter (CGCI) is able to achieve reactive power compensation and active power transfer simultaneously with a low operational voltage. The CGCI is coupled to the point of common coupling (PCC) via a second-order LC circuit, which makes its modeling and current control characteristics differs from the conventional inductive-coupling grid-connected inverter. The direct current tracking with hysteresis pulse width modulation (PWM) was used in previous studies. However, this method suffers from widely varying switching frequency and large current ripples. A Quasi-proportional-resonant (Quasi-PR) current controller is designed for the CGCI in this paper. Its modeling and parameter selection are studied in detail. In contrast with proportional-integration (PI) current controller, the Quasi-PR controller reduces steady-state error. It also generates a voltage reference for applying the carrier-based PWM to improve output waveform quality. Simulation results are provided to verify the Quasi-PR controller and comparison with the PI controller is also done. A lab-scale prototype is built. Experimental results are given to show the validity of the proposed control method and its design.
KeywordCapacitive-coupling grid connected inverter parameters design Proportional-integration controller Quasi-PR controller
DOI10.1109/ECCE.2015.7310012
URLView the original
Language英语
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Document TypeConference paper
CollectionUniversity of Macau
Affiliation1.Electrical and Computer Engineering Department,University of Macau,Macao
2.State Key Laboratory of Analog and Mixed-Signal VLSI,University of Macau,Macao
3.Department of Energy Technology,Aalborg University,Denmark
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Ye,Tao,Dai,Ningyi,Lam,Chi Seng,et al. Analysis, design and implementation of a quasi-proportional-resonant controller for multifunctional capacitive-coupling grid-connected inverter[C],2015:2506-2513.
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