Title :
Performance comparison of phase looked loop algorithms applied to micro-inverters for distributed photovoltaic generation
Author :
Scelba, G. ; Cacciato, M. ; Scarcella, Giuseppe ; Bartoli, N. ; Attanasio, R. ; Scuderi, G.
Author_Institution :
Univ. of CATANIA, Catania, Italy
Abstract :
The paper deals with the experimental comparison of different phase locked loop (PLL) algorithms for single phase, grid tied, photovoltaic generation systems; in particular, this work analyzes the effects of abnormal grid conditions on the output current and power control loops of a 250W micro-inverter unit, highlighting pros and cons of each PLL algorithm. The effectiveness of such algorithms has been evaluated by means of experimental tests analyzing the micro inverter operations when the grid voltage is affected by sags, dips, frequency variations and harmonic distortion. Harmonics rejection and dynamic response of the control algorithm in these operating conditions has been highlighted. In addition the computational burden required by each algorithm has been evaluated.
Keywords :
distributed power generation; dynamic response; electric current control; harmonic distortion; invertors; phase locked loops; photovoltaic power systems; power control; power generation control; power system harmonics; abnormal grid conditions; dips; distributed photovoltaic generation; frequency variations; grid tied photovoltaic generation systems; harmonic distortion; harmonics rejection; microinverter unit; output current control loops; phase looked loop algorithms; power 250 W; power control loops; sags; single phase photovoltaic generation systems; Algorithm design and analysis; Current measurement; Heuristic algorithms; Microwave integrated circuits; Phase locked loops; Synchronization; Voltage measurement; Fault ride-through; Micro-inverter; Photovoltaic; Renewable energy systems;
Conference_Titel :
Power Electronics and Applications (EPE), 2013 15th European Conference on
Conference_Location :
Lille
DOI :
10.1109/EPE.2013.6634728
