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Multilevel Inverters – A Survey

Author : Vijay Y. Patil and V.V.Patil

Pages : 1841-1845
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Multilevel inverter is an effective & practical solution for increasing power demand & reducing harmonics of AC waveforms. Multilevel inverter provides a desired output voltage from several levels of DC voltages as inputs to inverter. It has been found that this technique reduces the switching losses & total harmonic distortion. Advantage of the multilevel inverters is that they can generate output voltages with very low distortion and dv/dt. Also generate smaller common-mode voltage and operate with lower switching frequency compared to the conventional two level inverters. With use of lower switching frequency result in low switching losses & also reduced and the dv/dt. The voltage steps are smaller, as the number of levels increase.

Keywords: H-bridge Inverter, Multilevel Diode Clamped Inverter, Cascaded MLI, PWM Inverter

Article published in International Journal of Current Engineering and Technology, Vol.5, No.3 (June-2015)


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