Balancing DC link using the redundant states method in selective harmonics elimination PWM

Author

Imarazene, Khoukha ; Chekireb, H. ; Berkouk, E.M.

Author_Institution

Lab. of Electr. & Ind. Syst., Univ. of Sci. & Technol. Houari Boumediene, Algiers, Algeria

fYear

2009

fDate

1-3 July 2009

Firstpage

1

Lastpage

5

Abstract

A method is presented to balance the two DC-link capacitor voltages for a three-level inverter. Previous work has shown that using the redundant states in space-vector PWM algorithm solves this problem, leaving lower order harmonics or using high switching frequency. Here, it is shown that, the redundant states can be used in selective harmonics elimination PWM in the case of multilevel inverters, so as to produce the required fundamental voltage and to balance the two DC-link voltage sources without an additional circuitry.

Keywords

PWM invertors; power capacitors; power conversion harmonics; DC-link capacitor voltages; balancing DC link; multilevel inverters; redundant states; selective harmonics elimination; space-vector PWM algorithm; switching frequency; three-level inverter; Capacitors; Circuits; Electrical equipment industry; Laboratories; Pulse width modulation; Pulse width modulation inverters; Space vector pulse width modulation; Switches; Switching frequency; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Electromechanical Motion Systems & Electric Drives Joint Symposium, 2009. ELECTROMOTION 2009. 8th International Symposium on

Conference_Location

Lille

Print_ISBN

978-1-4244-5150-0

Electronic_ISBN

978-1-4244-5152-4

Type

conf

DOI

10.1109/ELECTROMOTION.2009.5259076

Filename

5259076