Analysis of voltage and current for multicarrier based multilevel inverter

Author

Kumar, Manoj ; Gupta, Rajesh

Author_Institution

Dept. of Electr. Eng., Motilal Nehru Nat. Inst. of Technol., Allahabad, India

fYear

2014

fDate

28-30 May 2014

Firstpage

1

Lastpage

6

Abstract

This paper presents a mathematical analysis of level shifted multicarrier based naturally sampled pulse width modulation (PWM) of multilevel inverter. The switching waveforms are realized using double Fourier integral solution and solved using Bessel´s function of first kind. The analysis is generalized and can yield output of any level of the cascaded H-bridge multilevel inverter. The mathematical equations are obtained for the multilevel inverter output voltage. The analytical results are obtained for the multilevel inverter current. It is shown through the frequency response plot that the ripple magnitude of the current decreases with both increase in number of levels and carrier frequency. The mathematical computations and frequency spectrum are obtained through the MATLAB software to verify the results.

Keywords

Bessel functions; Fourier analysis; PWM invertors; bridge circuits; frequency response; integral equations; sampling methods; Bessel´s function; Matlab; PWM; carrier frequency; cascaded H-bridge multilevel inverter; double Fourier integral solutions; frequency response plot; frequency spectrum; mathematical equations; multicarrier based multilevel inverter; natural sampling; pulse width modulation; ripple magnitude; switching waveform; Baseband; Frequency modulation; Harmonic analysis; Inverters; Pulse width modulation; Switches; Bessel´s function; double Fourier integral solutions; natural sampling;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering and Systems (SCES), 2014 Students Conference on

Conference_Location

Allahabad

Print_ISBN

978-1-4799-4940-3

Type

conf

DOI

10.1109/SCES.2014.6880106

Filename

6880106