Design of a novel control hysteresis algorithm for photovoltaic systems for harmonic compensation

Solar photovoltaic (PV) system design and integration with an existing AC 
grid is growing very fast in recent years and used by many of them as they 
are pollution-free, structure is limited and maintenance free. From the factors 
considering, the performance of PV system depends upon the inverter output 
voltage tested for linear, non-linear, with harmonic, and without harmonic
loads. Generated due to the nonlinear loads. Better inverter control 
techniques are developed to maintain grid power quality. This article 
discusses the analysis and comparison of pulse width modulation (PWM)
converters with unique and state of the art nonlinear control schemes and 
various modulation approaches. The primary objective of this research is 
controlling an active filtering (AF) hysteresis PWM converter with no 
sensors. A simple structure with hysteresis current control method total 
harmonic distortion (THD) is lower when compared with the sinusoidal 
pulse width modulation (SPWM) method. The said claims are supported by 
employing computer simulations using MATLAB/Simulink and different 
control approaches, such as proportional plus integral and artificial neural 
network controllers.