Optimal Design of a New Cascaded Multilevel Inverter Topology With Reduced Switch Count

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.

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“…In addition, the switches suffer from higher blocking voltages. Other similar topologies have been discussed in [18][19][20][21][22][23][24][25].…”

Section: H2 H4mentioning

confidence: 80%

A New Hybrid Multilevel Inverter Topology with Reduced Switch Count and dc Voltage Sources

Bassi

Salam

2019

Energies

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“…[1][2][3][4][5][6][7] Figure 1A to C shows the recently proposed AMO-based MLIs. MLIs have been extensively researched and find application in almost all sector of power industry like industrial drives, applications related to renewable energy, power system applications including high voltage dc transmission (HVDC) and flexible ac transmission systems (FACTS).…”

Section: Introductionmentioning

confidence: 99%

“…Most of these topologies have been developed to eliminate or mitigate the demerits of the classical topologies. [1][2][3][4][5][6][7] Figure 1A to C shows the recently proposed AMO-based MLIs. [8][9][10] In Figure 1A to C, all the topologies have a similar structure with different placement of bidirectional switches.…”

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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“…Thirteen levels can be produced in the E-type [16] and 17 levels in the ST-type [17] using four dc voltage sources with 10 and 12 switches, respectively. Similarly, other MLI topologies have been proposed in [18][19][20][21][22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of a Hybrid Single T-Type Double H-Bridge Multilevel Inverter (STDH-MLI) Topology

et al. 2019

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Multilevel inverters are proficient in achieving a high-quality staircase output voltage waveform with a lower amount of harmonic content. In this paper, a new hybrid multilevel inverter topology based on the T-type and H-bridge module is presented. The proposed topology aims to achieve a higher number of levels utilizing a lower number of switches, direct current (dc) voltage sources, and voltage stresses across different switches. The basic unit of the proposed single T-type and double H-bridge multilevel inverter (STDH-MLI) produces 15 levels at the output using three dc voltage sources. The proposed topology can be extended by connecting a larger number of dc voltage sources in the T-type section. The nearest level control (NLC) switching technique is used to generate gate pulses for switches to achieve a high-quality output voltage waveform. In addition, a simplified way to achieve NLC is also described in the paper. A detailed comparison with other similar topologies is provided to set the benchmark of the proposed topology. Finally, experimental work is carried out to validate the performance of the proposed topology.

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Optimal Design of a New Cascaded Multilevel Inverter Topology With Reduced Switch Count

Cited by 227 publications

References 33 publications

A New Hybrid Multilevel Inverter Topology with Reduced Switch Count and dc Voltage Sources

A New Hybrid Multilevel Inverter Topology with Reduced Switch Count and dc Voltage Sources

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

Design and Implementation of a Hybrid Single T-Type Double H-Bridge Multilevel Inverter (STDH-MLI) Topology

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