Series-parallel switched-capacitor based multilevel inverter

Babaei, Ebrahim; Sedaghati, Farzad

doi:10.1109/icems.2011.6073330

Cited by 23 publications

(14 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is noticeable that there are differences between the proposed multilevel inverter and the switched-capacitor multilevel inverter presented in Babaei and Sedaghati. 22 The mentioned switched-capacitor multilevel inverter uses charging and discharging of capacitors to generate voltage levels, so it has slow dynamic. Also, it has challenge in balancing of the capacitor voltage.…”

Section: Comparison Of Symmetric Configuration Of Proposed Multilevmentioning

confidence: 99%

A multilevel inverter based on cascade connection of submultilevel units with reduced switch count

Sedaghati

Majareh

2019

Circuit Theory & Apps

Self Cite

View full text Add to dashboard Cite

In this paper, a multilevel inverter based on cascade connection of new submultilevel inverters is presented. The suggested submultilevel inverter is constructed using series connection of basic switching units. The proposed multilevel inverter uses fewer power switches in comparison with some similar topologies which results in reduction of switch gate drivers and also converter size and cost. The proposed multilevel inverter can be implemented in both symmetric and asymmetric configurations. The multilevel inverter configuration and operation principle are described in detail, and then, design methods of symmetric and asymmetric configurations are given. Determination of the optimal number of basic units and cascaded submultilevel inverters regarding criteria such as number of switches and total blocking voltage (TBV) of switches is studied. Power losses of the proposed multilevel inverter are calculated, and then, its symmetric and asymmetric configurations are compared with each other and also with similar cascaded multilevel inverters in various items. The validity of the suggested cascaded multilevel inverter is verified using both computer simulations and laboratory prototype implementation.KEYWORDS cascade connection, inverter, multilevel, submultilevel | INTRODUCTIONCascaded multilevel inverters are one of the multilevel inverter categories that are constructed using a series connection of several single-phase inverters. These structures generate medium-voltage levels using only standard low-voltage mature technology components. Cascaded multilevel inverters also feature a high modularity degree because each inverter is considered as a module with similar circuit topology. 1 Numerous researches have been devoted to modifying previous cascaded multilevel inverters from switching devices number, switches blocking voltage, DC voltage source number, power losses, and output voltage THD points of view. A single-phase, nine-level, cascaded multilevel inverter has been introduced in Odeh Ch and Nnadi. 2 To generate the gating signals for the inverter power switches, a phase disposition multicarrier PWM scheme is applied. In Belkamel et al, 3 a new topology of three-phase cascaded multilevel inverter with asymmetric configuration has been presented which is composed of series-connected submultilevel inverter units. The main merit of the introduced multilevel inverter is reduction in the number of switches, switch gate driver circuits, switch blocking voltage, installation area, and total cost. Another structure for cascaded multilevel inverter has been presented in Kangarlu and Babaei, 4

show abstract

Section: Comparison Of Symmetric Configuration Of Proposed Multilevmentioning

confidence: 99%

A multilevel inverter based on cascade connection of submultilevel units with reduced switch count

Sedaghati

Majareh

2019

Circuit Theory & Apps

Self Cite

View full text Add to dashboard Cite

show abstract

“…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

View full text Add to dashboard Cite

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.

show abstract

“…In these surveys, hybrid multilevel inverter using switched capascitor unit (HMSC) [23], switched capacitor inverter using series/parallel conversion with inductive load (SCISP) [15], a step up switched-capacitor multilevel inverter with self-voltage balancing [16] and that SCMLI topologies which presented in [17] and [18] at the same condition are considered. Fig.…”

Section: Comparison Studymentioning

confidence: 99%

A hybrid switched-capacitor multilevel inverter with self charge balancing and less number of switches

Zamiri

Barzegarkhoo

Karami

et al. 2015

The 6th Power Electronics, Drive Systems &Amp; Technologies Conference (PEDSTC2015)

View full text Add to dashboard Cite

Multilevel inverters with less number of components and power supplies play important role in most of power electronic applications. In this paper, a new switched capacitor multilevel inverter (SCMLI) is presented which can generate more output voltage levels with less number of components and one required dc power supply in contrast to some of existing topologies. This structure uses a new switched capacitor converter (SCC) which includes several capacitors that can be charged by binary asymmetrically algorithm as self-balancing. At the next, proposed SCMLI is connected to another SCMLI unit as hybrid form and then, the output voltage levels are increased with good quality using hybrid modulation technique. Several simulation results by PSCAD/EMTDC software and comparisons in different aspects such as number of required switches, capacitors, number of components that are in current path and total blocked voltage is given to confirm the effectiveness of proposed topology.

show abstract

Series-parallel switched-capacitor based multilevel inverter

Cited by 23 publications

References 8 publications

A multilevel inverter based on cascade connection of submultilevel units with reduced switch count

A multilevel inverter based on cascade connection of submultilevel units with reduced switch count

A New DC-AC Multilevel Converter with Reduced Device Count

A hybrid switched-capacitor multilevel inverter with self charge balancing and less number of switches

Contact Info

Product

Resources

About