Simulink based optimization of SPWM multilevel inverter with phase shift and dual carrier at each level

Author

Vadhera, Shelly ; Sankar, Ganesh S.

Author_Institution

Dept. of Electr. Eng., Nat. Inst. of Technol., Kurukshetra, India

fYear

2011

fDate

28-30 Jan. 2011

Firstpage

1

Lastpage

7

Abstract

This paper proposes the H-Bridge multilevel circuits with sinusoidal pulse width modulation (SPWM) and double carrier for each level with different phase shifts from 3.75°-90°. Operating principle with switching functions is analyzed from five to twenty five (odd) levels SPWM inverter and simulated to alleviate harmonic components of output voltage. By observing the THD and fundamental component of different levels the optimum level of inverter is obtained for a constant 325V dc battery supply and for variable dc-supply by keeping output as 230Vrms.

Keywords

PWM invertors; bridge circuits; harmonic distortion; optimisation; H-bridge multilevel circuits; SPWM multilevel inverter; Simulink; THD; dc battery supply; dual carrier; harmonic components; optimization; phase shift; sinusoidal pulse width modulation; switching functions; total harmonic distortion; voltage 325 V; Converters; Fourier series; Harmonic analysis; Inverters; Medium voltage; Pulse generation; Switches; Cascaded H-Bridge; Double carrier; Fundamental RMS voltage; Optimum multilevel inverter; Phase shift and Total harmonic distortion;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics (IICPE), 2010 India International Conference on

Conference_Location

New Delhi

Print_ISBN

978-1-4244-7883-5

Type

conf

DOI

10.1109/IICPE.2011.5728140

Filename

5728140