NDLI: Improved Predictive Current Controlled PWM for Single-Phase Grid-Connected Voltage Source Inverters

Content Provider	IEEE Xplore Digital Library
Author	Bin Yu Liuchen Chang
Copyright Year	2005
Description	Author affiliation: Dept. of Electr. & Comput. Eng., New Brunswick Univ., Fredericton, NB (Bin Yu; Liuchen Chang)
Abstract	Inverter-based distributed generators (DG) must meet the power quality requirements set by interconnection standards such as IEEE Standard 1547 before DGs are allowed to interconnect with existing electric power systems. The power quality is highly dependent on the control strategies of the DG inverters. Traditional predictive current controller can precisely control the load current with low distortions, however, has a poor performance under component parameter variations. An improved predictive current controller has been developed by the authors for single-phase grid-connected voltage source inverters (VSI). Aiming to overcoming the drawbacks of the traditional predictive controller, a scheme for improving the robustness of inverter system is proposed along with a dual-timer control strategy and a software phase-lock-loop (PLL). The controller is designed not only to minimize the control error introduced by the control delay but also to provide a faster response for over-current protection. The simulation and experiment results show that the improved predictive controller has a superior performance to the traditional predictive controller, particularly under parameter variations. The single-phase grid-connected VSI implemented with the proposed predictive controller has shown very low current THD in both laboratory tests and in field operation of a small wind turbine system
Starting Page	231
Ending Page	236
File Size	851902
Page Count	6
File Format	PDF
ISBN	0780390334
DOI	10.1109/PESC.2005.1581629
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-16
Publisher Place	Brazil
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pulse width modulation inverters Voltage control Control systems Power quality Power system interconnection Distributed power generation Power generation Power systems Robust control Phase locked loops
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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