A hybrid seven level inverter topology with a single DC supply and reduced switch count

Rahul, S Arun; Kaarthik, R. Sudharshan; Gopakumar, K.; Rajeevan, P. P.; Franquelo, Leopoldo G.; León, José I.; Nágy, I.

doi:10.1109/epe.2015.7309051

Cited by 8 publications

(1 citation statement)

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“…With a DC bus voltage of V dc , the inverter topology-1 (INV-1) requires two switches of voltage rating V dc , four switches of voltage rating V dc /2 and four switches of voltage rating V dc /4 per phase. The method explained in this paper, can be applied to the inverter topology [23] (INV-2) with reduced switch voltage and is shown in Fig. 5(b).…”

Section: Capacitor Charge Balancing For Extended Modulation Rangementioning

confidence: 99%

Extended Linear Modulation Operation of a Common-Mode-Voltage-Eliminated Cascaded Multilevel Inverter With a Single DC Supply

Pramanick

Boby

et al. 2016

IEEE Trans. Ind. Electron.

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Zero common mode voltage (CMV) operation of multilevel inverters results in reduced DC bus utilization and reduced linear modulation range. In this paper, a method to increase the linear modulation range for zero CMV operation without increasing the DC bus voltage using a cascaded multilevel inverter with a single DC supply is presented. Using this method, the peak fundamental output voltage can be increased from 0.499Vdc to 0.637Vdc with zero CMV inside the linear modulation range. Also, various PWM switching sequences are analysed in this paper and the PWM sequence which gives minimum current ripple is used for the zero CMV operation of the inverter. The inverter topology with single DC supply is realised by cascading a two level inverter with two floating capacitor fed full bridge modules. Simulation and experimental results for steady state and dynamic operating conditions are presented to validate the proposed method.

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Section: Capacitor Charge Balancing For Extended Modulation Rangementioning

confidence: 99%