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Title: Control system design and stability analysis for a three phase SiC-based Filter-less grid-connected PV inverter

Abstract

In this paper, a control system of a filter-less grid-connected SiC inverter is designed. Stability analysis has been researched with a focus on grid disturbance rejection. The analysis shows that the conventional control method with instantaneous grid voltage feedforward (IGVF) will significantly limit the bandwidth or stability margin of a filter-less grid-connected inverter, thus make the inverter sensitive to grid disturbance. Two proposed grid voltage feedforward control methods, which require little additional computation resources, are presented to suppress the grid voltage disturbance. The design methods of control parameters are derived. The effects of the proposed feedforward methods are also compared with that of conventional IGVF. Lastly, the grid-connected experimental results of a three phase SiC based filter-less PV inverter are provided to verify and compare the proposed control methods.

Authors:
 [1];  [1];  [1]
  1. Florida State Univ., Tallahassee, FL (United States). The Center for Advanced Power Systems
Publication Date:
Research Org.:
PowerAmerica, Raleigh, NC (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Advanced Manufacturing Office (EE-5A)
OSTI Identifier:
1574432
Grant/Contract Number:  
EE0006521
Resource Type:
Accepted Manuscript
Journal Name:
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
Additional Journal Information:
Journal Name: IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; inverter; grid-connected; silicon carbide; MOSFET; filter-less; stability

Citation Formats

Shi, Yanjun, Wang, Lu, and Li, Hui. Control system design and stability analysis for a three phase SiC-based Filter-less grid-connected PV inverter. United States: N. p., 2018. Web. doi:10.1109/APEC.2018.8341573.
Shi, Yanjun, Wang, Lu, & Li, Hui. Control system design and stability analysis for a three phase SiC-based Filter-less grid-connected PV inverter. United States. doi:10.1109/APEC.2018.8341573.
Shi, Yanjun, Wang, Lu, and Li, Hui. Thu . "Control system design and stability analysis for a three phase SiC-based Filter-less grid-connected PV inverter". United States. doi:10.1109/APEC.2018.8341573. https://www.osti.gov/servlets/purl/1574432.
@article{osti_1574432,
title = {Control system design and stability analysis for a three phase SiC-based Filter-less grid-connected PV inverter},
author = {Shi, Yanjun and Wang, Lu and Li, Hui},
abstractNote = {In this paper, a control system of a filter-less grid-connected SiC inverter is designed. Stability analysis has been researched with a focus on grid disturbance rejection. The analysis shows that the conventional control method with instantaneous grid voltage feedforward (IGVF) will significantly limit the bandwidth or stability margin of a filter-less grid-connected inverter, thus make the inverter sensitive to grid disturbance. Two proposed grid voltage feedforward control methods, which require little additional computation resources, are presented to suppress the grid voltage disturbance. The design methods of control parameters are derived. The effects of the proposed feedforward methods are also compared with that of conventional IGVF. Lastly, the grid-connected experimental results of a three phase SiC based filter-less PV inverter are provided to verify and compare the proposed control methods.},
doi = {10.1109/APEC.2018.8341573},
journal = {IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {3}
}

Journal Article:
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