Novel configuration for multilevel DC‐link three‐phase five‐level inverter. Issue 12 (1st December 2014)

• Record Type: Journal Article
• Authors: Masaoud, Ammar; Ping, Hew Wooi; Mekhilef, Saad; Taallah, Ayoub
• Is Part Of: IET power electronics. Volume 7:Issue 12(2014)
• Page Start: 3052
• Page End: 3061
• Publication Date: 2014-12-01
• Subjects: frequency modulation -- DC‐AC power convertors -- invertors -- bridge circuits -- driver circuits; low power prototype inverter -- switching states determination -- frequency modulation technique -- DC voltage installation area -- DC voltage gate driver circuits -- DC voltage switches -- hybrid multilevel inverters -- output voltage waveform -- 12‐switch three‐phase bridge -- CHB power cells -- cascaded half‐bridge power cells -- DC voltage supply -- multilevel DC‐link three‐phase flve‐level voltage source inverter topology; Power electronics -- Periodicals; 621.31705
• DOI: 10.1049/iet-pel.2013.0812
• Languages: English
• ISSNs: 1755-4535

Abstract

Abstract : A new multilevel DC‐link three‐phase five‐level voltage source inverter topology is introduced here. A multilevel DC‐link formed from single DC voltage supply and two cascaded half‐bridge (CHB) power cells is connected to 12‐switch three‐phase bridge in such a way that the proposed inverter produces five levels in the output voltage waveform. Compared to comparable inverters, such as symmetrical CHB and hybrid multilevel inverters, the proposed topology maximises the number of voltage levels and reduces the number of utilised DC voltage supplies, switches, gate driver circuits and installation area. A modified fundamental frequency modulation technique based on determination of switching states of inverter is developed, to generate the appropriate switching gate signals. Furthermore, to validate the proposed topology, a low power prototype inverter has been built. The obtained simulation and experimental results ensure the feasibility of the suggested topology and also the compatibility of the used modulation technique.