ASSESMENT OF EQUAL AND UNEQUAL AMPLITUDE CARRIERS FOR A SINGLE PHASE FIVE LEVEL DIODE CLAMPED INVERTER

This work presents the comparison of various Pulse Width Modulation (PWM) techniques for the chosen single phase half bridge DCMLI (Diode Clamped Multi Level Inverter). In this paper, a single phase half bridge diode clamped multilevel inverter is simulated with sinusoidal, THI (Third Harmonic Injec...

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Bibliographic Details
Published in:ARPN journal of engineering and applied sciences 2015-07, Vol.10 (12), p.5277-5285
Main Authors: Sureshpandiarajan, P, Natarajan, S P, Balamurugan, C R, Shanthi, B
Format: Article
Language:English
Subjects:
Amplitudes
Carriers
Clamping
Diodes
Inverters
Matlab
Pulse duration modulation
Roots
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Summary:This work presents the comparison of various Pulse Width Modulation (PWM) techniques for the chosen single phase half bridge DCMLI (Diode Clamped Multi Level Inverter). In this paper, a single phase half bridge diode clamped multilevel inverter is simulated with sinusoidal, THI (Third Harmonic Injection), Trapezoidal, TAR (Trapezoidal Amalgamated Reference) and Stepped Wave reference with Equal Amplitude Carriers (EAC) and UEAC (Un Equal Amplitude Carriers). The proposed EAC and UEAC is applied for various PWM strategies like PD (Phase Disposition) PWM, POD (Phase Opposition and Disposition)PWM, APOD (Alternative Phase Opposition and Disposition) PWM, CO (Carrier Overlapping)PWM, PS(Phase Shift), PWM and VF(Variable Frequency) PWM with EAC and UEAC. For all the PWM methods and references the UEAC produces less THD and higher fundamental RMS (Root Mean Square) values except for m sub(a) = 1. For m sub(a) = 1 the EAC provides less THD (Total Harmonic Distortion) and higher fundamental RMS (Root Mean Square) values for all the PWM methods and references. The simulations are carried out through Power System Block Set/MATLAB/SIMULINK.
ISSN:1819-6608
1819-6608