Hybrid Multilevel Inverter Using Switched Capacitor Units

Babaei, Ebrahim; Gowgani, Saeed Sheermohammadzadeh

doi:10.1109/tie.2013.2290769

Cited by 430 publications

(285 citation statements)

References 23 publications

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“…However, these topologies have used a HBridge to change the polarity of the output voltage waveform and cascaded strategy keeping in mind the end goal to generalize the structure and achieve the higher number of the voltage levels at the output. Moreover these topologies have higher number of current paths which results more conduction losses and requires more number of switches [26][27][28][29].…”

Section: Literature Reviewmentioning

confidence: 99%

A New DC-AC Multilevel Converter with Reduced Device Count

Pakala¹,

Sumathi²

2017

IJIES

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Abstract:In the present paper, a novel single phase multilevel inverter using switched capacitor units is proposed. Switched capacitor unit (SCU) is used in the suggested multilevel inverter will boost the dc supply voltage at the input without using transformer by switching the capacitors in parallel and series. The proposed topology generates more number of voltage levels with less number of switches, isolated dc sources, and diodes in comparison with existing topologies. The recommended structure generates the output voltage waveform of 17-levels (8 positive, 8 negative and one zero level) with 2 capacitors, 2 diodes, 2 dc sources and 10 switches. This 17-level multilevel inverter generates the maximum output voltage and current about 80 V and 950 mA respectively, with 10 V and 30 V dc sources. Further, this topology can be extended to 49-level by including just four power switches and one more switched capacitor unit to the basic structure of proposed multilevel inverter. The feasibility and performance of the suggested multilevel converter have been assessed with simulation and experimental tests of 17-level multilevel inverter.

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Section: Literature Reviewmentioning

confidence: 99%

A New DC-AC Multilevel Converter with Reduced Device Count

Pakala¹,

Sumathi²

2017

IJIES

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“…6. Suggested CMMLI topologies in (a) Ref [12] (b) Ref [14] (c) Ref [20] (d) Ref [21]& [25] (e) Ref [22] (f) Ref [24] (g) First Top of Ref [26] (h) Second Top of Ref [26].…”

Section: Fourth Proposed Algorithmmentioning

confidence: 99%

“…In the symmetric comparison, the proposed topology based on the first recommended algorithm is compared with the MLVSIs proposed in [12], [14], [20]- [22], [25] and the two suggested structures in [26] in terms of the number of required power switches or gate drivers, the total value of the blocked voltage, the maximum number of current path components and the number of required dc link voltages for the specific number of output voltage levels ( N 25 level  ) that can be generated by all of the structures. These comparisons are summarized by Table II which can corroborate the salient advantages of the proposed topology compared to the existing structures in terms of most of the key parameters.…”

Section: A Symmetric Comparisonmentioning

confidence: 99%

A Cascaded Modular Multilevel Inverter Topology Using Novel Series Basic Units with a Reduced Number of Power Electronic Elements

Barzegarkhoo¹,

Vosoughi²,

Zamiri³

et al. 2016

Journal of Power Electronics

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In this study, a new type of cascaded modular multilevel inverters (CMMLIs) is presented which is able to produce a considerable number of output voltage levels with a reasonable number of components. Accordingly, each series stage of the proposed CMMLI is comprised of two same basic units that are connected with each other through two unidirectional power switches without aiming any of the full H-bridge cells. In addition, since the potentiality for generating a higher number of output voltage levels in CMMLIs hinges on the magnitude of the dc voltage sources used in each series unit, in the rest of this paper, four different algorithms for determining an appropriate value for the dc sources' magnitude are also presented. In the following, a comprehensive topological analysis between some CMMLI structures reported in the literature and proposed structure along with several simulation and experimental results will be also given to validate the lucrative benefits and viability of the proposed topology.

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“…The basic units can be connected in series as shown in Fig. to increase the voltage steps at the output [22]. As mention before, H-Bridge is used to generate zero and negative polarity voltage.…”

Section: A Topology #1mentioning

confidence: 99%

“…While in the second improved topology, the basic units are connected by switch Zn and one H-bridge. To produce maximum number of voltage steps at the output for both improved topologies, the dc voltage sources should be equal respectively to [22] , for i=1, 2, 3,... n , for i=1, 2, 3,... n where n is the number of inverter units. In both improved topologies; less dc voltage sources are required compared to other topologies [23,24].…”

Section: Topology #3mentioning

confidence: 99%

Photovoltaic multi-level inverters technology

Shehadeh

Aly

El-Hawary

2015

2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE)

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In this paper three main types of multi-level inverters are reviewed (diode-clamped, flying capacitor, and cascaded H-Bridge inverters). Different multi-level inverter topologies which are currently available on the market as far as components for the electrical integration of PV systems are also concerned. The new trends of all of these topologies are seeking to reduce the cost, the size of the inverter and the losses by reducing the number of the switches and capacitors and keeping the output voltage steps high enough at least to be similar to the previous topologies.

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Hybrid Multilevel Inverter Using Switched Capacitor Units

Cited by 430 publications

References 23 publications

A New DC-AC Multilevel Converter with Reduced Device Count

A New DC-AC Multilevel Converter with Reduced Device Count

A Cascaded Modular Multilevel Inverter Topology Using Novel Series Basic Units with a Reduced Number of Power Electronic Elements

Photovoltaic multi-level inverters technology

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