A new cascaded asymmetrical multilevel inverter based on switched dc voltage sources

Siddique, Marif Daula and Rawa, Muhyaddin and Mekhilef, Saad and Mohamed Shah, Noraisyah (2021) A new cascaded asymmetrical multilevel inverter based on switched dc voltage sources. International Journal of Electrical Power & Energy Systems, 128. ISSN 0142-0615, DOI https://doi.org/10.1016/j.ijepes.2020.106730.

Full text not available from this repository.


Multilevel inverters are now becoming an important element for medium-voltage high-power applications. A low switch count multilevel inverters are currently attracting more attention due to its high efficiency, low cost, and easy control. This paper proposes a new single-phase cascade asymmetrical multilevel inverter topology based on switched dc voltage sources which is capable of achieving a higher number of output levels using fewer number of switches, driver circuits, and dc voltage sources. Other advantages include the inherent generation of negative voltage levels and lower voltage stress across the switches. Three different approaches in selecting the magnitude of the sources for the cascade connection has been included to produce a higher number of voltage levels. Furthermore, the power loss and fault-tolerant analysis of the proposed basic module has also been discussed. To set the benchmark of the proposed multilevel inverter structure, a comparison with several recently proposed topologies is carried out. The comparison has been carried out for the basic module, generalized structure, and cascade connection. The proposed topology gave improved parameters for all three categories. Fundamental switching frequency modulation technique is used to achieve high-quality output voltage waveforms with lower harmonic contents and reduced switching losses. Finally, the operation and performance of the proposed basic module and its cascade connection for two modules are presented together with experimental results in several steady-state and dynamic operating conditions.

Item Type: Article
Funders: Deanship of Scientific Research (DSR), King Abdulaziz University, Jeddha, Saudi Arabia [KEP-Msc-4-135-39], DSR
Uncontrolled Keywords: Multilevel Inverter (MLI); Asymmetrical MLI; Cascaded MLI; Switched dc voltage source; Total Standing Voltage (TSV); Reduced switch count
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering > Department of Electrical Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 18 Apr 2022 01:39
Last Modified: 18 Apr 2022 01:39
URI: http://eprints.um.edu.my/id/eprint/26772

Actions (login required)

View Item View Item