A Nine-Level Split-Capacitor Active-Neutral-Point-Clamped Inverter and Its Optimal Modulation Technique

Harbi, Ibrahim; Ahmed, Mostafa; Hackl, Christoph M.; Kennel, Ralph; Abdelrahem, Mohamed

doi:10.1109/tpel.2022.3144876

Cited by 14 publications

(5 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is noteworthy that switches with high switching frequency have a lower blocking voltage compared to other power switches, improving the power loss distribution in the inverter. According to the comprehensive comparison in [10], the 9L-SC-ANPC has a low number of power devices and FCs compared to the existing nine-level topologies. In addition, low conduction losses, high efficiency and low saturation voltage are outstanding features of this inverter as a result of the low number of on-state power devices.…”

Section: Converter Description and System Modelmentioning

confidence: 99%

“…Since the 9L-SC-ANPC inverter has a limited number of redundant states due to the significant reduction in the used components and is classified as a semi-redundant topology, the available redundancies are not sufficient to achieve NP potential control in addition to balancing the FCs in the single-phase operation. Therefore, inspired by the concept presented in [10] for traditional CB-PWM, the NP balance is realized in this work by regulating the power transfer in the topology. The NP balance is integrated into the designed DB-MPC method.…”

Section: B Dc-link Balancingmentioning

confidence: 99%

“…Since the FCs balancing is realized using the available redundancies in PWM-based schemes, the operation at low line frequencies is limited with the proposed DB-MPC method due to the low number of redundant vectors in the 9L-SC-ANPC inverter. Accordingly, this inverter is recommended for grid-connected applications, where operation at low line frequencies is not required, as discussed in [10].…”

Section: ) Prediction Phasementioning

confidence: 99%

“…Several hybrid structures have recently been reported in the literature [5]- [9]. Lately, an interesting hybrid MLI called nine-level split-capacitor active-neutral-pointclamped (9L-SC-ANPC) inverter was presented in [10]. The single-phase structure of this inverter employs nine power switches, two diodes, and two FCs.…”

Section: Introductionmentioning

confidence: 99%

“…The single-phase structure of this inverter employs nine power switches, two diodes, and two FCs. Compared to classical and recent 9L MLIs, this topology has several merits regarding the required components, conduction losses, efficiency, and overall cost as demonstrated in [10] through a comprehensive comparison. Thence, this inverter is considered in this work.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Enhanced Fault-Tolerant Robust Deadbeat Predictive Control for Nine-Level ANPC-Based Converter

et al. 2022

Self Cite

View full text Add to dashboard Cite

Deadbeat model predictive control (DB-MPC) is one of the advanced promising control methods for power converters thanks to its simplicity, high steady-state performance and fast dynamic response. However, the high sensitivity to parameter mismatch and the difficulty of handling multiple control targets are problematic issues in DB-MPC. This work presents an improved robust DB-MPC for a new nine-level ANPC-based inverter. This inverter requires a low number of power devices compared to other single dc-source inverters. Only nine active switches and two discrete diodes are used to generate a nine-level voltage waveform. Without the need for weighting factors, the proposed DB-MPC method tackles three control goals; current control, flying capacitors (FCs) stabilization and dc-link balance, which saves the laborious effort of adjusting the weighting factors in the traditional finite control set MPC (FCS-MPC) method. Moreover, an effective dc-link balancing scheme based on power flow control is proposed and integrated into the FCs control objective. To enhance the control robustness, an EKF-based estimator is designed to identify the system parameters online. In addition, the proposed DB-MPC scheme allows the considered inverter to continue operating with the generation of five levels in the failure condition of the four-quadrant switch, improving the fault tolerance of the inverter. The developed DB-MPC method is experimentally verified in steady-state and transient operation. To demonstrate the excellent performance of the presented DB-MPC scheme, experimental comparisons with other popular MPC methods are performed.

show abstract

Section: Converter Description and System Modelmentioning

confidence: 99%

Section: B Dc-link Balancingmentioning

confidence: 99%

Section: ) Prediction Phasementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Enhanced Fault-Tolerant Robust Deadbeat Predictive Control for Nine-Level ANPC-Based Converter

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

A modified multilevel inverter with modified triangular carrier SPWM approach

Arun,

Stonier,

Peter

2024

Electr Eng

View full text Add to dashboard Cite

A single‐source nine‐level inverter with quadratic boost ability for renewable energy applications

Tayyab

Sarwar

Bakhsh

et al. 2022

IET Renewable Power Gen

View full text Add to dashboard Cite

A nine‐level inverter with quadratic boost ability is proposed in this paper. The presented topology produces quadruple boosted output voltage by utilizing 10 switches, one diode, two capacitors, and a single dc source. In the proposed topology a back‐end H‐bridge is not required to produce negative voltage levels, which in turn reduces the voltage stress across the switches to the maximum of twice the input voltage. The two switched capacitors (SC) are charged to the dc source voltage rating and twice the voltage rating of the dc source, respectively, to produce quadruple voltage boosting. The high‐voltage boosting capability makes it suitable for the integration of renewable energy sources to the grid. Nearest level control (NLC)‐based modulation technique is applied to produce gate driver signals for the inverter circuit. The proposed topology is compared with the recently published topologies in terms of used components such as switches, diodes, sources, and capacitors are made so as to show the advantages of the presented reduced component count topology. Finally, simulation and hardware results are obtained under certain loading conditions to validate the operability of the proposed topology. The total harmonic distortion (THD) of the proposed topology at the unity modulation index is 8.2%.

show abstract

A Nine-Level Split-Capacitor Active-Neutral-Point-Clamped Inverter and Its Optimal Modulation Technique

Cited by 14 publications

References 39 publications

Enhanced Fault-Tolerant Robust Deadbeat Predictive Control for Nine-Level ANPC-Based Converter

Enhanced Fault-Tolerant Robust Deadbeat Predictive Control for Nine-Level ANPC-Based Converter

A modified multilevel inverter with modified triangular carrier SPWM approach

A single‐source nine‐level inverter with quadratic boost ability for renewable energy applications

Contact Info

Product

Resources

About