Performance Analysis of Seven Level Multilevel Inverter Using Renewable Energy Systems
DOI:
https://doi.org/10.51983/ajes-2012.1.2.1682Keywords:
Harmonics, MATLAB, Pulse Width Modulation (PWM), PhotoVoltaic array (PV), Wind TurbineAbstract
With the increasing concerns on energy issues, the development of renewable energy sources is becoming more and more attractive. A new kind of wind-PV hybrid generated system that comprises of wind and photovoltaic generation subsystems as input to a cascaded H-bridge multilevel inverter is developed in this paper. In conventional methods the inverter with solar and wind energy sources are used. In this method a seven level multilevel inverter with wind–PV hybrid generation system as input are proposed for application to remote and isolated areas. The wind and the solar light are captured in greatest degree, as well as the multilevel inverter using pulse width modulation technique is adopted. The objectives of this hybrid system are, to satisfy the load power demand and, presence of high number of output levels in inverter to maintain the dc output voltage level of the inverter to produce a nearly sinusoidal output. This reduces harmonics in inverter output voltage. This paper discusses about the control of seven-level H-bridge cascaded multilevel inverter with Fast Fourier Transform analysis in inverter output voltage through simulation. The simulated wind-PV system consists of an AC-to-DC boost converter, aDC-to-AC nverter, a photovoltaic module, and wind module. Its shown by the simulations that a multilevel inverter utilizing renewable resource has lower Total Harmonics Distortion in output voltage. In this paper comparison of conventional inverter and proposed seven level cascaded H-bridge multilevel inverter using solar and wind energy sources are presented.
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