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2011 (Vol. 3, Issue: 12)
Article Information:

Maximum Power Point Tracking and Reactive Power Control of Single Stage Grid Connected Photovoltaic System

Y. Hoseynpoor and T. PirzadehAshraf
Corresponding Author:  Y. Hoseynpoor 

Key words:  Adaptive predictive current control, grid connected PV system, maximum power point tracking, reactive power control, , ,
Vol. 3 , (12): 1430-1436
Submitted Accepted Published
2011 July, 28 2011 September, 18 2011 December, 26
Abstract:

Single-stage grid-connected Photovoltaic (PV) systems have advantages such as simple topology, high efficiency, etc. However, since all the control objectives such as the maximum power point tracking (with the utility voltage, and harmonics reduction for output current need to be considered simultaneously, the complexity of the control scheme is much increased. In this paper a new type of grid connected photovoltaic (PV) system with Maximum Power Point Tracking (MPPT) and reactive power simultaneous control system is presented. System has two controlling loops to obtain the maximum power from the PV array and also has reactive power control (RPC). In order to decrease the complexity, cost and the number of converters, a singlestage PV system is applied. Using RPC and MPPT controllers, reference current is calculated and the current with low THD (<5%) is injected to grid through Adaptive Predictive Current Control (APCC) and current Controlled Voltage Source Inverter (CCVSI). The operation of the system is classified in to two day and night modes. In day mode MPPT and RPC control is accomplished and in night mode RPC control is accomplished like STATCOM operation. Reactive power control is continuously performed correctly with appropriate speed in two inductive and capacitive modes in both day and night modes. Thus, System Utilization Factor (SUF) increases to 100% which is just 20% for common PV systems. Mathematical modeling of the system and the results of simulations in MATLAB/SIMULINK software are presented to investigate the correctness of the results.
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  Cite this Reference:
Y. Hoseynpoor and T. PirzadehAshraf, 2011. Maximum Power Point Tracking and Reactive Power Control of Single Stage Grid Connected Photovoltaic System.  Research Journal of Applied Sciences, Engineering and Technology, 3(12): 1430-1436.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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