DEVELOPMENT OF HYSTERESIS CURRENT CONTROLLER FOR POWER QUALITY ENHANCEMENT IN GRID CONNECTED PV SYSTEM
Journal: International Journal of Electrical Engineering and Technology (IJEET) (Vol.11, No. 4)Publication Date: 2020-06-30
Authors : J Preetha Roselyn Devraj Sen Pratyaksha Lal Nayanika Purkayastha C Nithya;
Page : 8-21
Keywords : Grid connected PV system; Hysteresis current controller; Maximum power point tracking; Total harmonic distortion.;
Abstract
The integration of distributed generation like solar and wind are increasing nowadays due to fossil fuel reduction and increased carbon emission. Many integration issues arise of connecting Solar PV to the grid out of which power quality is the important factor. Higher PV injection causes undesirable technical impacts on the distribution networks which leads to power quality issues. This paper studies the impact of PV on the power quality of the utility grid with different levels of penetration of solar energy into the grid. The power quality of the grid is studied using the Total harmonic distortion (THD) by performing Fast Fourier Transform (FFT) analysis. This paper deals with the development of controllers for boost converter and grid tied inverters which minimizes the harmonics due to solar PV system and power converters in grid connected PV system. The Maximum Power Point Tracking (MPPT) for boost converter and Hysteresis current control (HCC) for inverter has been designed and implemented in grid connected PV system. The hysteresis current controller for the inverter has been specifically designed to reduce the THD of the system meeting IEEE519_1992 regulations. The simulation model of the grid connected PV system has been designed in MATLAB 2018b version. The comparison studies are carried out in the PV system with and without hysteresis current controller, after which it can be concluded that, after the incorporation of the hysteresis current controller, the performance of the system is better in terms of power quality.
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