A 7-Level Single DC Source Cascaded H-Bridge Multilevel Inverters Control Using Hybrid Modulation

Farid Khoucha (1) , Achour Ales (2) , Abdelkader Khoudiri (2) , Khoudir Marouani (2) , Mohamed Benbouzid (1) , Abdelaziz Kheloui (2)

1 LBMS - Laboratoire brestois de mécanique et des systèmes
2 UER ELT - Unité d'Enseignement et de Recherche d'Electrotechnique

This paper presents a new hybrid cascaded Hbridge multilevel inverter (HCMLI) motor drive DTC control scheme for electric vehicles or hybrid electric vehicles where each phase of the inverter can be implemented using only a single DC source. Traditionally, each phase of the inverter require n DC source for 2n + 1 output voltage levels. In this paper, a scheme is proposed that allows the use of a single DC source as the first DC source which would be available from batteries or fuel cells, with the remaining (n – 1) DC sources being capacitors. This scheme can simultaneously maintain the DC voltage level of the capacitors, produce a nearly sinusoidal output voltage due to its high number of output levels and therefore a high performance and also efficient torque and flux controller is obtained, enabling a DTC solution for hybrid multilevel inverter powered motor drives.1

Mots clés: Cascaded multilevel inverter; hybrid modulation; DTC

Domaines: Energie électrique

Farid Khoucha, Achour Ales, Abdelkader Khoudiri, Khoudir Marouani, Mohamed Benbouzid, et al.. A 7-Level Single DC Source Cascaded H-Bridge Multilevel Inverters Control Using Hybrid Modulation. ICEM'10, Sep 2010, Rome, Italy. 5pp. ⟨hal-00532661⟩