DocumentCode :
3193887
Title :
Power loss analysis of grid connection photovoltaic systems
Author :
Wu, T.-F. ; Chang, C.-H. ; Chang, Y.-D. ; Lee, K.-Y.
Author_Institution :
Dept. of Electr. Eng., Nat. Chung Cheng Univ., Ming-Hsiung, Taiwan
fYear :
2009
fDate :
2-5 Nov. 2009
Firstpage :
326
Lastpage :
331
Abstract :
This paper presents power loss analysis of grid-connection PV systems, based on the loss factors of double line-frequency voltage ripple, fast irradiance variation, fast dc load variation, non-uniform solar cell characteristic, and limited operating voltage range. These loss factors will result in power deviation from the maximum power points (MPP). In the power loss analysis, both single-stage and two-stage grid connection PV systems are considered. The effects of these loss factors on two-stage grid-connection PV systems are insignificant due to an additional maximum power point tracker (MPPT), but it will reduce the system efficiency typically about 3%. The power loss caused by these loss factors in single-stage grid-connection PV systems is also around 3%; that is, a single-stage grid-connection PV system has the merits of saving components and reducing cost, while does not scarify overall system efficiency. Simulation results with a MATLAB software package are presented to confirm the analysis.
Keywords :
cost reduction; losses; mathematics computing; maximum power point trackers; photovoltaic power systems; power grids; MATLAB software package; MPPT; PV systems; cost reduction; dc load variation; double line-frequency voltage ripple; fast irradiance variation; grid connection photovoltaic systems; maximum power point tracker; nonuniform solar cell characteristic; power loss analysis; Analytical models; Costs; Load management; MATLAB; Photovoltaic cells; Photovoltaic systems; Reactive power; Software packages; Solar power generation; Voltage; loss factor; power loss analysis; single-stage grid-connection PV system; two-stage grid-connection PV system;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics and Drive Systems, 2009. PEDS 2009. International Conference on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-4166-2
Electronic_ISBN :
978-1-4244-4167-9
Type :
conf
DOI :
10.1109/PEDS.2009.5385738
Filename :
5385738
Link To Document :
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