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A new hybrid multilevel inverter topology with reduced switch count and dc voltage sources

Bassi, Hussain Mohammad and Salam, Zainal (2019) A new hybrid multilevel inverter topology with reduced switch count and dc voltage sources. Energies, 12 (6). ISSN 1996-1073


Official URL: http://dx.doi.org/10.3390/en12060977


In this paper, a new single-phase hybrid multilevel inverter (MLI) is proposed. Compared to other existing MLI topologies, the proposed circuit is capable of producing a higher number of output voltage levels using fewer power switches and dc sources. The levels are synthesized by switching the dc voltage sources in series/parallel combinations. An auxiliary circuit is introduced to double the number of levels by creating an intermediate step in between two levels. In addition, a zero level is introduced to overcome the inherent absence of this level in the original circuit. To improve the total harmonic distortion, a hybrid modulation technique is utilized. The operation and performance of the circuit are analyzed and confirmed using MATLAB/Simulink simulation. To validate the workability of the proposed idea, a 300 W, a thirteen level MLI (including the zero level) is designed and constructed. The circuit is tested with a no-load, resistive load and resistive-inductive load. The experimental results match very closely with the simulation and mathematical analysis.

Item Type:Article
Uncontrolled Keywords:dc-ac power converter, multilevel inverter, power conversion, PWM technique
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:88399
Deposited By: Yanti Mohd Shah
Deposited On:15 Dec 2020 08:02
Last Modified:15 Dec 2020 08:02

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