Hybrid Cascaded Multilevel Inverter (HCMLI) With Improved Symmetrical 4-Level Submodule

Lee, Sze Sing; Sidorov, Michail; Lim, Chee Shen; Idris, Nik Rumzi Nik; Heng, Yeh En

doi:10.1109/tpel.2017.2726087

Cited by 109 publications

(64 citation statements)

References 18 publications

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“…Other topologies based on the common emitter configurations have been reported in previous studies. [14][15][16][17][18] Similarly, the topology shown in Figure 2C uses a bidirectional switch made up of four diodes with one insulated-gate bipolar transistor (IGBT), known as bridge configuration. In this configuration, two diodes along with one IGBT conduct in either direction.…”

Section: Introductionmentioning

confidence: 99%

A new single‐phase cascaded multilevel inverter topology with reduced number of switches and voltage stress

Siddique

Mekhilef

Shah

et al. 2019

Int Trans Electr Energ Syst

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Summary Multilevel inverters have been the vital component for the power electronic systems and have been researched extensively to further enhance their performances in terms of topology and their control. In this paper, a new bidirectional single‐phase multilevel inverter module has been proposed with a reduced number of switches along with lower voltage stresses. The proposed module generates 17 levels at the output with 10 unidirectional switches along with four dc voltage sources with two varieties of dc voltage sources. Moreover, for a higher number of levels, the cascade connection of several modules has been discussed in this paper with three different methods for the selection of dc voltage sources. The proposed module has been compared with several similar topologies, which set the benchmark of the proposed one. The operation and performance of the proposed module have been validated through several simulation and experimental results with different types of load considering a change of modulation index.

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Section: Introductionmentioning

confidence: 99%

A new single‐phase cascaded multilevel inverter topology with reduced number of switches and voltage stress

Siddique

Mekhilef

Shah

et al. 2019

Int Trans Electr Energ Syst

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“…A generalized MLI is proposed in Satputaley and Borghate, Dewangan et al, and Noroozi et al, with a smaller number of switches and of lower voltage ratings to generate a higher number of voltage levels. Some of the MLIs based on T‐type and submodule structures reported for single‐phase and three‐phase applications in Hota et al and Lee et al, with reduced semiconductor devices compared with CHB‐MLI. However, all these structures need more independent DC sources, which limits their application where it is required to deploy a single DC voltage source.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, to overcome this issue, several hybrid structures have been developed.A generalized MLI is proposed in Satputaley and Borghate, Dewangan et al, and Noroozi et al, 7-9 with a smaller number of switches and of lower voltage ratings to generate a higher number of voltage levels. Some of the MLIs based on Ttype and submodule structures reported for single-phase and three-phase applications in Hota et al and Lee et al, 10,11 with reduced semiconductor devices compared with CHB-MLI. However, all these structures need more independent LIST OF ABBREVIATIONS AND SYMBOLS: FC Flying capacitor; ANPC Active neutral point clamped; ma Modulation index; VAN Load voltage; Vdc DC source voltage; iA Load current; Rq On state resistance of the mosfet; Rd On state resistance of the body diode; Kq,Krr, aq, bq, arr and brr constants calculated from the device data-sheets; Vf On state forward voltage drop of the body diode DC sources, which limits their application where it is required to deploy a single DC voltage source.…”

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confidence: 99%

A new hybrid flying capacitor–based single‐phase nine‐level inverter

Tirupathi

Kirubakaran

Tirumala

2019

Int Trans Electr Energ Syst

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Multilevel inverters (MLIs) with reduced part count are becoming popular in the arena of medium voltage and medium power applications. This proposed topology owns the advantages of reduced number and voltage stress across the switching devices and higher efficiency. It also combines the method of utilizing full DC‐link voltage to improve the RMS output voltage. The proposed hybrid topology is constructed using three different sections consisting of a cascaded two two‐level inverter, H‐bridge with a flying capacitor, and single‐leg low‐frequency circuit. The complete modes of operation to generate 9‐level A. C voltage at the inverter output including the FC voltage balancing has been comprehensively presented. A comparison is constructed with the proposed and recent topologies in the literature to show the merits of the proposed configuration. The proposed topology is tested in MATLAB/SIMULINK environment and a scale‐down prototype has been developed in the laboratory. The feasibility of the proposed topology is verified through simulation and experimental results.

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“…Nevertheless, this topology utilizes numerous insulated-gate bipolar transistors (IGBTs) and gate drivers, which enlarge the system. A hybrid cascaded MLI with improved symmetrical sub-module was introduced in [14]. It employs four dc sources and ten switches with high PIVs to produce a 9 L voltage waveform.…”

Section: Introductionmentioning

confidence: 99%

An Innovative Dual-Boost Nine-Level Inverter with Low-Voltage Rating Switches

et al. 2019

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This article presents an innovative switched-capacitor based nine-level inverter employing single DC input for renewable and sustainable energy applications. The proposed configuration generates a step-up bipolar output voltage without end-side H-bridge, and the employed capacitors are charged in a self-balancing form. Applying low-voltage rated switches is another merit of the proposed inverter, which leads to extensive reduction in total standing voltage. Thereby, switching losses as well as inverter cost are reduced proportionally. Furthermore, the comparative analysis against other state-of-the-art inverters depicts that the number of required power electronic devices and implementation cost is reduced in the proposed structure. The working principle of the proposed circuit along with its efficiency calculations and thermal modeling are elaborated in detail. In the end, simulations and experimental tests are conducted to validate the flawless performance of the proposed nine-level topology in power systems.

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Hybrid Cascaded Multilevel Inverter (HCMLI) With Improved Symmetrical 4-Level Submodule

Cited by 109 publications

References 18 publications

A new single‐phase cascaded multilevel inverter topology with reduced number of switches and voltage stress

A new single‐phase cascaded multilevel inverter topology with reduced number of switches and voltage stress

A new hybrid flying capacitor–based single‐phase nine‐level inverter

An Innovative Dual-Boost Nine-Level Inverter with Low-Voltage Rating Switches

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