New Family of Boost Switched-Capacitor Seven-Level Inverters (BSC7LI)

Lee, Sze Sing; Bak, Yeongsu; Kim, Seok-Min; Joseph, Anto; Lee, Kyo‐Beum

doi:10.1109/tpel.2019.2896606

Cited by 155 publications

(103 citation statements)

References 25 publications

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“…The TCS is the lowest compared to other topologies at each level of the proposed topology. For the proposed topology, the TCS is only 7, which is 22% less than topology of [10], 43% to [14], [17], 50% to [12], [16]- [16], and 64% to the topology suggested in [13].…”

Section: Comparative Assessmentmentioning

confidence: 77%

A New Eight Switch Seven Level Boost Active Neutral Point Clamped (8S-7L-BANPC) Inverter

et al. 2020

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A new boost Active-Neutral-Clamped (ANPC) voltage boosting inverters are appealing for low dc-link voltage demand. Recent boost ANPC topology has demonstrated a 1.5 times voltage gain, but the number of switches has a higher number. This paper proposed an improved boost ANPC topology with 1.5 voltage gain using the least number of switches. Further, the number of conducting switches has been reduced remarkably which enhances the system efficiency. The seven-level (7L) output voltage levels are achieved using a floating capacitor with self-voltage balancing capability. The proposed topology has been analyzed and compared to the ANPC topologies proposed in recent years. For the validation of the theoretical aspect of the proposed topology, the experimental findings have been compiled in the paper.

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Section: Comparative Assessmentmentioning

confidence: 77%

A New Eight Switch Seven Level Boost Active Neutral Point Clamped (8S-7L-BANPC) Inverter

et al. 2020

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“…However, the main distinguishing advantage of this topology is the high‐voltage–boosting gain. Lee et al proposed seven‐level SC‐based circuits with the aim of boosting ability and low voltage stress. Both the circuits require 10 semiconductor switches and four capacitors to generate seven levels.…”

Section: Introductionmentioning

confidence: 99%

Experimental verification of a hybrid multilevel inverter with voltage‐boosting ability

Naik

Suresh

Venkataramanaiah

2020

Circuit Theory & Apps

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Summary A new nine‐level natural‐balanced boost hybrid multilevel inverter (BH‐MLI) is proposed in this paper. Each phase of the proposed BH‐MLI is designed with only 11 semiconductor switches and two electrolytic capacitors. Here, the capacitor voltages are balanced by utilizing the series‐parallel and natural balancing techniques effectively. Furthermore, the proposed circuit eradicates the multiple DC sources by introducing a single DC link for single‐ and three‐phase applications. The proposed topology can be easily extendible to obtain higher level output voltage waveform due to its modular‐switched capacitor cells (SCCs). Besides, the higher voltage level generation does not pose high‐voltage stress on any of the topology components, as the blocking voltage of all devices within the source voltage magnitude. Further, a quantitative comparison is conducted among the state‐of‐art switched‐capacitor multilevel inverter (SC‐MLIs) to highlight the superiority of the proposed configuration. Finally, the performance of the proposed BH‐MLI is experimentally validated with phase disposition‐pulse width modulation (PD‐PWM) and round control method at different modulation indices, load conditions.

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“…Although a higher number of voltage levels are generated with a smaller number of device counts, they do not possess the voltage boosting capability. This boosting feature is available in the switched capacitor multilevel inverter (SCMLI) in which the capacitor acts as a voltage source, which was introduced by authors of [15] in 1998. They obtained a 31-level output voltage with the help of two sub-circuits.…”

Section: Introductionmentioning

confidence: 99%

Realization of a Generalized Switched-Capacitor Multilevel Inverter Topology with Less Switch Requirement

et al. 2020

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Conventional multilevel inverter topologies like neutral point clamped (NPC), flying capacitor (FC), and cascade H bridge (CHB) are employed in the industry but require a large number of switches and passive and active components for the generation of a higher number of voltage levels. Consequently, the cost and complexity of the inverter increases. In this work, the basic unit of a switched capacitor topology was generalized utilizing a cascaded H-bridge structure for realizing a switched-capacitor multilevel inverter (SCMLI). The proposed generalized MLI can generate a significant number of output voltage levels with a lower number of components. The operation of symmetric and asymmetric configurations was shown with 13 and 31 level output voltage generation, respectively. Self-capacitor voltage balancing and boosting capability are the key features of the proposed SCMLI structure. The nearest level control modulation scheme was employed for controlling and regulating the output voltage. Based on the longest discharging time, the optimum value of capacitance was also calculated. A generalized formula for the generation of higher voltage levels was also derived. The proposed model was simulated in the MATLAB®/Simulink 2016a environment. Simulation results were validated with the hardware implementation.

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New Family of Boost Switched-Capacitor Seven-Level Inverters (BSC7LI)

Cited by 155 publications

References 25 publications

A New Eight Switch Seven Level Boost Active Neutral Point Clamped (8S-7L-BANPC) Inverter

A New Eight Switch Seven Level Boost Active Neutral Point Clamped (8S-7L-BANPC) Inverter

Experimental verification of a hybrid multilevel inverter with voltage‐boosting ability

Realization of a Generalized Switched-Capacitor Multilevel Inverter Topology with Less Switch Requirement

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