A modified cascaded multilevel inverter with reduced switch count employing bypass diodes

Author

Al-Judi, Arif ; Bierk, Hussain ; Nowicki, Ed

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Calgary, Calgary, AB, Canada

fYear

2009

fDate

7-10 Sept. 2009

Firstpage

742

Lastpage

747

Abstract

In this paper, a bypass diode technique is introduced to the conventional H-bridge multilevel inverter topology that can reduce greatly the number of active switching elements in the system. Only one H-bridge is required for the entire single phase system, plus a transistor and a diode for each voltage source. A gradient search technique is employed to calculate the switching angles of the output waveform in order to achieve the minimum total harmonic distortion (THD). Single-phase experimental and 3-phase simulation results verify the concept development.

Keywords

harmonic distortion; invertors; H-bridge multilevel inverter topology; THD; active switching elements; bypass diodes; minimum total harmonic distortion; modified cascaded multilevel inverter; switch count reduction; Automotive engineering; Battery powered vehicles; Circuit topology; Diodes; Inverters; Switches; Switching circuits; Total harmonic distortion; Vehicle driving; Zero voltage switching; THD; cascaded H-bridge; gradient search; harmonic recution; multilevel inverter;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicle Power and Propulsion Conference, 2009. VPPC '09. IEEE

Conference_Location

Dearborn, MI

Print_ISBN

978-1-4244-2600-3

Electronic_ISBN

978-1-4244-2601-0

Type

conf

DOI

10.1109/VPPC.2009.5289774

Filename

5289774