A Switched-Capacitor Self-Balanced High-Gain Multilevel Inverter Employing a Single DC Source

Panda, Kaibalya Prasad; Bana, Prabhat Ranjan; Panda, Gayadhar

doi:10.1109/tcsii.2020.2975299

Cited by 96 publications

(48 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, there are still switches need to withstand the peak value of the output voltage, which may also limit their applications in high voltage systems. The topology proposed in [30] reduces the MVS of switches, however, the MVS of switches is still twice the dc source voltage. The topologies proposed in [31]- [32] can effectively reduce the voltage stress of the switches.…”

Section: ) Literature Reviewmentioning

confidence: 99%

A T-Type Switched-Capacitor Multilevel Inverter With Low Voltage Stress and Self-Balancing

Wang

Yuan

et al. 2021

IEEE Trans. Circuits Syst. I

View full text Add to dashboard Cite

This paper proposes a novel T-type multilevel inverter (MLI) based on the switched-capacitor technique. The proposed inverter not only achieves that the maximum voltage stress of the switches is less than the input voltage but also has a voltage boost capability, which makes it suitable in high voltage applications. It is worth mentioning that the proposed inverter features two topology extension schemes which help it achieve a higher output level and voltage gain. With the merit of low voltage stress and reduced power devices, a seven-level inverter can be achieved using only two capacitors. Moreover, capacitor voltage self-balancing capability can simplify the complexity of the circuit and control. The topology, operating principle, modulation strategy and analysis of the capacitor of the inverter are presented. The superiorities of the proposed inverter are investigated by comparing with recently proposed hybrid MLIs and switchedcapacitor MLIs. Finally, a seven-level prototype is constructed to validate the correctness of the theoretical analysis and the feasibility and effectiveness of the proposed inverter. 1 Index Terms-Multilevel inverter, switched-capacitor, low voltage stress, self-balancing, extension. NOMENCLATURE Ac Amplitude of the triangular carriers fc Frequency of the triangular carriers Aref Amplitude of the sinusoidal modulation wave fo Frequency of the sinusoidal modulation wave Vo Output voltage Vdc Voltage of dc source Vs Voltage stress of the switch Ci Capacitor number i Cs Parasitic capacitance of the switch ∆VC2 Voltage ripple of C2 VC2 The voltage of C2 ∆Q1 Discharge amount of C2 during the period of 0-t1 ∆Q2 Discharge amount of C2 during the period of t2-t3 ∆QC2 The maximum discharge amount of C2 QuThe discharge amount of the capacitor when it works at

show abstract

Section: ) Literature Reviewmentioning

confidence: 99%

A T-Type Switched-Capacitor Multilevel Inverter With Low Voltage Stress and Self-Balancing

Wang

Yuan

et al. 2021

IEEE Trans. Circuits Syst. I

View full text Add to dashboard Cite

show abstract

“…The fundamental frequency SSC scheme maintains the required fundamental value of the output and thus cannot regulate the ac output (or the voltage gain), which is generally required in different applications of an MLI. In such a case, the phasedisposition PWM control (PPC) scheme [14], [19], [33] may be employed. In the PPC scheme, multiple carrier signals are compared with the reference sinusoidal signal to generate the PWM signals through the pulse logic decoder, as shown in Fig.…”

Section: Modulation Schemementioning

confidence: 99%

“…However, the voltage gain in 11-level inverter is limited to 2.5 times the input voltage. Recently configured MLIs in [22], [33], and [34] attain high voltage gain (six times, four times, and three times) using lower number of components. Conventional H-bridge is not required in these circuits to generate the ac voltage output.…”

mentioning

confidence: 99%

A Single-Source Switched-Capacitor-Based Step-Up Multilevel Inverter With Reduced Components

Panda

Bana

Kiselychnyk

et al. 2021

IEEE Trans. on Ind. Applicat.

Self Cite

View full text Add to dashboard Cite

Switched-capacitor-based multilevel inverters (SC MLIs) have received a great deal of interest that reduces the dc source requirement and improves the power quality. However, multiple dc sources and the requirement of a large number of switches to generate a high-quality boost output are the fundamental issues in the SC MLIs. This article presents a step-up 17-level SC MLI using reduced number of switches, three capacitors, and a single dc source. The steady-state voltage across the capacitors is maintained in the ratio 1:2:0.5 that contributes to quadruple boosting ability without using any auxiliary capacitor voltage balancing circuit. Besides, lower switch count in the conduction path and operation of 50% of the switches at fundamental frequency ensures total power loss reduction in the proposed circuit. A comparative assessment with recently developed 17-level MLIs in terms of the number of components, gain, stress, and cost factor elucidates the advantages of the proposed MLI. After a detailed circuit analysis and loss evaluation, simulations are performed to verify the step-up and inherent balancing features of the proposed MLI. Further, using both the fundamental frequency and high-frequency switching techniques, extensive experimental test results are presented under different transient conditions to validate the operational feasibility of the 17-level prototype. Index Terms-Multilevel inverter (MLI), reduced components, self-voltage balance, single-source, switched-capacitor (SC), voltage gain. I. INTRODUCTION D EVELOPMENT of multilevel inverters (MLIs) has been a recent trend for a variety of low-, medium-, and highpower applications [1]-[5].

show abstract

“…However, the capacitor used in these topologies does not provide any boosting feature. In recent years, the switched-capacitor based multilevel inverter (SCMLI) topologies based on series/parallel combination of capacitors have gained much popularity for high voltage applications [12]- [16]. This is due to the boosting feature possess by the SCMLI.…”

Section: Introductionmentioning

confidence: 99%

A New Family of Step-Up Hybrid Switched-Capacitor Integrated Multilevel Inverter Topologies With Dual Input Voltage Sources

et al. 2021

View full text Add to dashboard Cite

A Switched-Capacitor Self-Balanced High-Gain Multilevel Inverter Employing a Single DC Source

Cited by 96 publications

References 23 publications

A T-Type Switched-Capacitor Multilevel Inverter With Low Voltage Stress and Self-Balancing

A T-Type Switched-Capacitor Multilevel Inverter With Low Voltage Stress and Self-Balancing

A Single-Source Switched-Capacitor-Based Step-Up Multilevel Inverter With Reduced Components

A New Family of Step-Up Hybrid Switched-Capacitor Integrated Multilevel Inverter Topologies With Dual Input Voltage Sources

Contact Info

Product

Resources

About