Developed analytical expression for current harmonic distortion of the PV system’s inverter in relation to the solar irradiance and temperature

Abstract

This paper deals with modeling and simulation of the total harmonic distortion of the current (THD I ) dispatched from the inverter and connected to nonlinear load. The change of THD I was examined in relation to the ambient temperature (T ) and solar irradiance (G). The developed model is being used to extract parameters for a given THD I as a function of temperature and solar radiation. This study outlines the working principle of photovoltaic (PV) panel as well as PV array. Off-grid PV system is modeled by using Matlab/Simulink program, and detailed analytical study has been carried out in this work. The design, modeling and simulation of this study are performed from 50 up to 988 W/m 2 for solar irradiance. Harmonic components have negative effects on the steady-voltage stability of the PV system. Therefore, analytical expression is needed for steady-state stability analysis in order to reduce negative effects. Hence, two analytical expressions of THD I were obtained by two new different methods which are statistical package for the social sciences program and genetic expression programming. Eventually, two different methods have been verified by the Matlab/Simulink program in order to find out THD I and demonstrated the effectiveness of the proposed strategy. As a result of this study, it is observed that input current THDI of nonlinear load is too high at low irradiance. It is suggested that active harmonic filters should be used at low irradiance in order to produce better quality energy and avoid damages in the PV system.

WITHDRAWN: Quality Problems in Low İrradiance at Grid Connected PV Solar System

“…The relationship between panel temperature and panel power is inversely proportional. As the ambient temperature increases, the power of the panel decreases [18][19][20]. In the solar system, the active power does not change, in the case when the reactive power is zero, the power factor improves and approaches to one.…”

A Critical Analysis of Bifacial Solar Farm Configurations: Theory and Experiments

“…A comprehensive techno-economic analysis would be of interest to evaluate such potentials. While this study focuses on maximizing DC generation potential, net economic value of generated renewable power for end user will also depend on tackling challenges related to power quality [47], [48]. Nevertheless, we anticipate the results will help to pave the way for reducing solar LCOE by providing strategies to increase the energy yield through application-specific bifacial PV systems ensuring optimal utilization of local conditions.…”

The quality problems in low irradiance at grid connected photovoltaic systems

“…their product being a positive and is called "real power". The reactive part is pumping work up and down the circuit and does no real work for you [17][18][19]. When we use the values in Table 1, the below graph is obtained.…”

“…The relationship between panel temperature and panel power is inversely proportional. As the ambient temperature increases, the power of the panel decreases [18][19][20]. In the solar system, the active power does not change, in the case when the reactive power is zero, the power factor improves and approaches to one.…”