NDLI: Single-phase PLL structure using modified p-q theory for utility connected systems

Content Provider	IEEE Xplore Digital Library
Author	Oliveira da Silva, S.A. Novochadlo, R. Modesto, R.A.
Copyright Year	2008
Description	Author affiliation: Dept. of Electr. Eng., Fed. Technol. Univ. of Parana - UTFPR, Cornelio Procopio (Oliveira da Silva, S.A.; Novochadlo, R.)
Abstract	Phase-Locked Loop (PLL) systems have been used in several equipment used in power conditioning applications such as, uninterruptible power supply systems (UPS), active power filters, PWM rectifiers, etc., in which phase angle information of utility voltage is necessary. This work presents a description of the phase detection method applied to a single-phase PLL structure for utility connected systems. The proposed single-phase PLL system is based on the modified single-phase instantaneous reactive power theory (p-q theory). A fictitious two-phase system is obtained introducing a lag of 90deg in the measured single-phase voltage. Therefore, a new two-phase system can be studied in alphabeta coordinates using the three-phase instantaneous reactive power theory. The analysis is performed using a two-phase stationary reference frame model which uses the instantaneous active power as the reference signal of PLL. To validate the theoretical analysis, a model of the PLL system is presented. Mathematical analysis of the PLL system is performed and its dynamic response is discussed. Both simulation and experimental results are presented to validate the theoretical analyses.
Starting Page	4706
Ending Page	4711
File Size	152968
Page Count	6
File Format	PDF
ISBN	9781424416677
ISSN	02759306
DOI	10.1109/PESC.2008.4592712
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-06-15
Publisher Place	Greece
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Phase locked loops Mathematical model Analytical models Periodic structures Reactive power Voltage measurement Control systems
Content Type	Text
Resource Type	Article

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