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Output voltage quality intensification of diode clamped multilevel inverters using FM PWM technique

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3 Author(s)
Najmi, V. ; Dept. of Electr. Eng., Sharif Univ. of Technol., Tehran, Iran ; Ebrahimi, S. ; Oraee, H.

Improvement in switching techniques is one of the effective methods for increasing the voltage quality in Multilevel Inverters. In this paper, a novel switching technique using frequency modulation is proposed to achieve high quality output voltage of multilevel inverters. This method is employed to different configurations of multilevel inverters consist of Diode Clamped (or Neutral Point Clamped), Flying Capacitor and Cascaded H-bridge. Each multilevel inverter which utilizes this technique is modeled and simulated to investigate the performance of this method by the help of MATLAB/Simulink software. The Results show that this innovative method considerably reduces total harmonic distortion (THD) of output voltage for diode clamped multilevel inverters in different kinds of loads and can solve the problem of transferring the active power in this type of inverters.

Published in:

Power Electronics and Drive Systems Technology (PEDSTC), 2012 3rd

Date of Conference:

15-16 Feb. 2012

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