Dual-T-Type Seven-Level Boost Active-Neutral-Point-Clamped Inverter

Lee, Sze Sing; Lee, Kyo‐Beum

doi:10.1109/tpel.2019.2891248

Cited by 153 publications

(96 citation statements)

References 12 publications

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“…From Table III, only eight switches are used for the proposed topology, which is the least among the 7L topologies listed in Table III. Further, except for the topology proposed in [12], all other topologies including the proposed one require only one floating capacitor.…”

Section: Power Loss Analysismentioning

confidence: 99%

“…The author in [11] attempted by adequately incorporating a floating capacitor to increase the voltage gain of the traditional 3L ANPC from half to unity with 5L output. Another topology suggested by [12], uses similar principles of the floating capacitor to enhance the boosting level. The voltage gain was increased to 1.5, however, two floating capacitors with a voltage rating equal to the input voltage increases the overall cost of the inverter.…”

Section: Introductionmentioning

confidence: 99%

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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: Power Loss Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2020

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“…A hybrid switchedcapacitor based nine-level MLI topology has been proposed in [18], however, the boosting feature is absent from the topology of [18]. Few more seven-level boost inverter topologies have been proposed in [19]- [25], however, the higher number of components have always been the major concern about these topologies. Furthermore, the topologies proposed in [21], [22], [24], [25] have a lower value of boosting factor.…”

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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“…To overcome this problem, the active clamped diodes were replaced by active switches, achieving and an active neutral point clamped (ANPC) topology [9]. Although two more switches are used, it provides an additional switching state to facilitate loss distribution balancing for the whole system [10][11][12][13][14]. Among the many studies undertaken on new modulation schemes for controlling the ANPC converter, the authors of [15] proposed a new modulation scheme to perform a new commutation loop that offers better switching performance with lower stress on each switch.…”

Section: Introductionmentioning

confidence: 99%

Open-Circuit Fault Tolerance Method for Three-Level Hybrid Active Neutral Point Clamped Converters

2020

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Three-level converters are the most important technologies used in high power applications. Among these technologies, active neutral point clamped (ANPC) converters are mainly used for industrial applications. Meanwhile, recent developments have reduced losses and increased efficiency by using a hybrid combination of Si-IGBT and SiC-MOSFET switches to achieve hybrid ANPC (HANPC) converters. Open-circuit failure is regarded as a common and serious problem that affects the operational performance. In this paper, an effective fault-tolerant method is proposed for HANPC converters to safely re-utilize normal operation and increase the reliability of the system under fault conditions. Sequentially, regarding different topologies with reference to earlier fault tolerance methods which could not be applied to the HANPC, the proposed strategy enables continuous operation under faulty conditions effectively without using any additional devices by creating new voltage references, voltage offset, and switching sequences under the faulty conditions. Consequently, no additional costs or changes are associated with the inverter. A detailed analysis of the proposed strategy is presented highlighting the effects on the voltage, currents, and the corresponding total harmonic distortion (THD). The simulation and experimental results demonstrate the capability and effectiveness of the proposed method to maintain normal operation and eliminate the output distortion.

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Dual-T-Type Seven-Level Boost Active-Neutral-Point-Clamped Inverter

Cited by 153 publications

References 12 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

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

Open-Circuit Fault Tolerance Method for Three-Level Hybrid Active Neutral Point Clamped Converters

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