Performance of Photovoltaic Assisted Five Level Diode Clamped Inverter fed Induction Motor

This paper presents the simulation and analysis of Photovoltaic assisted three phase five level Diode Clamped multilevel inverter fed induction motor drive. Photovoltaic technology is one of the most promising for distributed low power generation. Its ability to produce power by directly converting solar energy has led to tremendous surge in its demand. The Photovoltaic output DC is fed to the boost converter to step up the voltage. The use of multilevel inverters have become popular in recent years for high power applications and an effective and practical solution for increasing power and reducing harmonics of AC waveforms. So, here a five level multilevel inverter is used for generating AC voltage from five levels of DC voltages and enhance the performance of the system. The proposed system is used to reduce the amplitudes of all harmonics at the output of the inverter. The power quality improves by reducing the harmonics level. The simulation results for the proposed system are verified using Mat lab / Simulink. The TOTAL HARMONIC DISTORTION (THD) for Diode Clamped multi-level inverter is compared with the three phase inverter and it can be observed that in the higher levels the THD is reduced.