Title :
PLL structures for utility connected systems
Author :
Arruda, Lícia Neto ; Silva, Sidelmo Magalhães ; Filho, Braz J Cardoso
Author_Institution :
Dept. de Engenharia Electr., Univ. Fed. de Minas Gerais, Belo Horizonte, Brazil
Abstract :
This paper presents a detailed analysis of PLL structures for utility connected systems. The three-phase PLL (phase-locked loop) structure capable of fast tracking the utility voltage vector is studied. A single-phase PLL structure, derived from the three-phase PLL topology, is discussed and its behavior under distorted utility conditions is analyzed. Additionally, the conventional zero-crossing PLL is studied and an alternative implementation for this PLL is proposed in order to improve its dynamic behavior. Simulation and experimental results from a DSP-based system are included to support the theoretical analysis.
Keywords :
control system analysis; phase locked loops; power system control; power system dynamic stability; power system interconnection; voltage control; distorted utility conditions; dynamic behavior improvement; phase-locked loop; single-phase PLL structure; three-phase PLL topology; utility connected systems; utility voltage vector tracking; zero-crossing PLL; Analytical models; Feedback; Frequency; Phase detection; Phase locked loops; Topology; Tracking loops; Uninterruptible power systems; Vectors; Voltage;
Conference_Titel :
Industry Applications Conference, 2001. Thirty-Sixth IAS Annual Meeting. Conference Record of the 2001 IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-7114-3
DOI :
10.1109/IAS.2001.955993
