Analysis, design and implementation of a quasi-proportional-resonant controller for multi-functional capacitive-coupling grid-connected inverter

Status	已發表Published
	Analysis, design and implementation of a quasi-proportional-resonant controller for multi-functional capacitive-coupling grid-connected inverter
	Ye, T.; Dai, N. Y.; Lam, C. S.; Wong, M. C.; Guerrero, J. M.
	2015-09-01
Source Publication	2015 IEEE Energy Conversion Congress and Exposition
Abstract	The 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.
Keyword	Capacitive-coupling grid connected inverter Quasi- PR controller Proportional-integration controller parameters design
Language	英語English
The Source to Article	PB_Publication
PUB ID	20909
Document Type	Conference paper
Collection	University of Macau
Corresponding Author	Dai, N. Y.
Recommended Citation GB/T 7714	Ye, T.,Dai, N. Y.,Lam, C. S.,et al. Analysis, design and implementation of a quasi-proportional-resonant controller for multi-functional capacitive-coupling grid-connected inverter[C], 2015.
APA	Ye, T.., Dai, N. Y.., Lam, C. S.., Wong, M. C.., & Guerrero, J. M. (2015). Analysis, design and implementation of a quasi-proportional-resonant controller for multi-functional capacitive-coupling grid-connected inverter. 2015 IEEE Energy Conversion Congress and Exposition.

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