A Novel Step-Up Single Source Multilevel Inverter: Topology, Operating Principle, and Modulation

Saeedian, Meysam; Adabi, M. Ebrahim; Hosseini, Mehdi; Adabi, Jafar; Pouresmaeil, Edris

doi:10.1109/tpel.2018.2848359

Cited by 125 publications

(96 citation statements)

References 30 publications

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“…In [28], a new nine-level boost topology based on SC has been proposed to which the capacitors are charged in the first two levels and then discharged to give the boost feature in the next two states of the output voltage. Furthermore, for the topologies [29]- [38] the switch count for nine levels has been on the higher side. Considering these facts, this paper attempts to synthesize a nine-level voltage using the SC technique to reduce the component count.…”

Section: Introductionmentioning

confidence: 99%

A Single DC Source Nine-Level Switched-Capacitor Boost Inverter Topology With Reduced Switch Count

et al. 2020

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This paper presents a new boost inverter topology with nine level output voltage waveform using a single dc source and two switched capacitors. The capacitor voltages are self-balancing and thus is devoid of any sensors and auxiliary circuitry. The output voltage is twice higher than the input voltage, which eliminates the need for an input dc boost converter especially when the inverter is powered from a renewable source. The merits of the proposed topology in terms of the number of devices and cost are highlighted by comparing the recent and conventional inverter topologies. In addition to this, the total voltage stress of the proposed topology is lower and have a maximum efficiency of 98.25%. The operation and dynamic performance of the proposed topology have been simulated using PLECS software and are validated using an experimental setup considering a different dynamic operation. INDEX TERMS Multilevel inverter, nine-level inverter, step-up inverter, switched capacitor, reduce switch count.

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Section: Introductionmentioning

confidence: 99%

A Single DC Source Nine-Level Switched-Capacitor Boost Inverter Topology With Reduced Switch Count

et al. 2020

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“…But, the topologies proposed in [23], [25] suffered from large conduction losses and higher value of TSV problems respectively. The switched capacitor MLI topologies presented in [26], [27] had a similar need for semiconductor switches and provided a higher value of TSV with increased equipment costs, though they have balanced the capacitor charging capability.…”

Section: Introductionmentioning

confidence: 99%

Compact Three Phase Multilevel Inverter for Low and Medium Power Photovoltaic Systems

et al. 2020

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A new three phase multilevel inverter with reduced number of components count is proposed in this paper. This inverter is designed using a single DC source per phase to generate multiple level output voltage which makes it suitable for low and medium voltage applications, including ac-coupled renewables or energy storages. A generalized circuit configuration is shown in this paper following which the number of output voltage level can be increased as per expectation. Although, each element endures the voltage stress equivalent to the input DC voltage, the value of total standing voltage (TSV) is reduced by the utilization of minimized number of components with respect to the number of series connected capacitors. Further, staircase modulation scheme is used to generate the switching signals. Hence, the proposed inverter can be operated at low switching frequency with optimal output current harmonic distortion which decreases switching losses and suppresses power factor falling. In order to validate the theoretical explanations and practical performances of the proposed inverter, the hypothesis is simulated for 9, 13 and 39 output voltage level inverters for three phase with a line voltage total harmonic distortion (THD) of 6.06%, 4.16% and 2.10% respectively in MATLAB/Simulink and a 5-level single phase laboratory prototype is implemented in the laboratory. INDEX TERMS Pulse width modulation inverters, multilevel inverters, total harmonic distortion, total standing voltage, photovoltaic systems, energy storage.

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“…This structure is single source and requires 2 capacitors. Similarly, references [32,33] SC-based topologies are fed by one source aiming to boost the input voltage.…”

Section: Introductionmentioning

confidence: 99%

A New Modular Multilevel Inverter Based on Step-Up Switched-Capacitor Modules

Khodaparast

Azimi

et al. 2019

Energies

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A new structure of switched capacitor multilevel inverter (SCMLI) capable of voltage boosting and with self-balancing ability is introduced in this article. This advantage is the result of a step by step rise of capacitor voltages in each module, supplied by just one DC voltage source. The proposed topology generates a sinusoidal output waveform with a magnitude several times greater than the input one. Higher output staircase AC voltage is obtained by applying a nearest level control (NLC) modulation technique. The most significant features of this configuration can be mentioned as: fewer semiconductor devices, remarkably low total harmonic distortion (THD), desirable operating under high /low frequency, high efficiency, inherent bipolar voltage production, easy circuit expansion, ease of control and size reduction of the circuit thanks to utilizing neither bulky transformer nor inductor. Moreover, the proposed SCMLI is comprehensively surveyed through theoretical investigation and a comparison of its effectiveness to recent topologies. Eventually, the operating principle of a 25-level prototype of the suggested SCMLI is validated by simulation in the MATLAB SIMULINK environment and experimental results.

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A Novel Step-Up Single Source Multilevel Inverter: Topology, Operating Principle, and Modulation

Cited by 125 publications

References 30 publications

A Single DC Source Nine-Level Switched-Capacitor Boost Inverter Topology With Reduced Switch Count

A Single DC Source Nine-Level Switched-Capacitor Boost Inverter Topology With Reduced Switch Count

Compact Three Phase Multilevel Inverter for Low and Medium Power Photovoltaic Systems

A New Modular Multilevel Inverter Based on Step-Up Switched-Capacitor Modules

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