Simulation of Solar Application for Grid Tied 3-Level Diode Clamp Inverter Using Sinusoidal Pulse with Modulation

Abstract

Generally inverter is developed with center on high reliability, low cost and mass-production for
transformed electrical energy from the PV module to the grid. Basically the DC/AC inverters are used in grid connected
photovoltaic energy production systems as the power processing interface between the electric grid and the photovoltaic
energy source. The energy injected into the electric grid by the photovoltaic system depends on the amount of power
extracted from the photovoltaic power source and the efficient processing of the DC/AC inverter power. Basically the
line commutated inverter has generate square shaped waveform of line current, which has produces large amount of
harmonic and also produces excess of heat which causes the transformer winding is damage. The effects of the electric
grid standards and regulations as well as the photovoltaic array working characteristics on the design of grid-connected
photovoltaic inverters have been considered. In this paper explain the basic idea about the control methods and
topologies like cascaded multilevel inverter, Sinusoidal Pulse width Modulation (SPWM), 3-level diode clamp inverter
and Space Vector Pulse Width Modulation (SVPWM) to grid connected inverter for solar photovoltaic based system.
After analysis the technique Sinusoidal Pulse Width Modulation (SPWM) is apply to control the inverter because of its
high efficiency and simulation is done through MATLAB/Simulink.