Space vector modulation for three-level simplified neutral point clamped (3L-SNPC) inverter

Lange, Alexander; Piepenbreier, Bernhard

doi:10.1109/compel.2017.8013399

Cited by 19 publications

(20 citation statements)

References 12 publications

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“…The MPC method is utilized to control the S4L inverter based single-phase DVR, due to the superior performance in the control of power electronic devices [30]- [37].…”

Section: Mpc Based Controller Designmentioning

confidence: 99%

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Simplified Four-Level Inverter-Based Dynamic Voltage Restorer With Single DC Power Source

Gooi

Zhang

et al. 2019

IEEE Access

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This paper proposes a simplified four-level (S4L) inverter based dynamic voltage restorer (DVR). In the proposed configuration, the dual buck stage can output full, two thirds, and one third of dc link voltage. Including the zero voltage provided by the two-level inverter, the output of the proposed inverter can be four levels. With the same switching frequency, the S4L inverter based DVR achieves better performance than the existing two-level and three-level inverters based DVRs. Moreover, compared with the existing four-level inverter based DVRs, it requires less active switches/diodes and only requires a single DC power source. The experimental results are provided for the validation of the proposed system. INDEX TERMS Dynamic voltage restorer (DVR), simplified four-level (S4L) inverter, voltage sag, total harmonic distortion (THD).

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“…The MPC method is utilized to control the S4L inverter based single-phase DVR, due to the superior performance in the control of power electronic devices [30]- [37].…”

Section: Mpc Based Controller Designmentioning

confidence: 99%

“…4 is proposed. The proposed S4L inverter is based on a three-level simplified NPC inverter [30], [31], which comprises a dual buck converter and a conventional two-level inverter. This new S4L inverter does not require additional components compared with the three-level inverters.…”

Section: Introductionmentioning

confidence: 99%

Simplified Four-Level Inverter-Based Dynamic Voltage Restorer With Single DC Power Source

Gooi

Zhang

et al. 2019

IEEE Access

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“…10 power transistors, compared to NPC and T-type 3-L converters, which both require at least 12 power transistors. On the other hand, the simpler converter structure translates in a lower number of switching states at high modulation indices [9], leading to slightly larger switching frequency output voltage harmonics. Due to its cascaded structure, composed of a 3-L switching matrix (SM) connected to a conventional 3-2-L inverter, the SNPCC lends itself to hybrid implementations.…”

Section: Introductionmentioning

confidence: 99%

“…The operating principle and space vector modulation of the SNPCC have been analyzed in [8,9,11,12], while several control strategies for VSD applications are presented in [7,[13][14][15][16][17]. Furthermore, the design of a hybrid GaN-Si SNPCC is reported in [10].…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, according to the authors' best knowledge, a complete analysis of the converter component stresses and overall performance is not available in literature, especially considering the degrees of freedom associated with the converter modulation strategy. For instance, [9] identifies and compares several PWM pulse patterns with a different number of switching transitions, however only the effect on the low-frequency DC-link mid-point voltage oscillation is investigated, disregarding the induced switching frequency harmonic current stress on the driven machine and the switching losses in the semiconductor devices. Moreover, the analysis of [9] is limited to symmetric pulse patterns, hence excluding asymmetric ones, which can trade a higher sampling/control complexity for improved converter performance.…”

Section: Introductionmentioning

confidence: 99%

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Analysis and performance evaluation of a three-phase sparse neutral point clamped converter for industrial variable speed drives

et al. 2021

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This paper analyzes the operation and characterizes the performance of a three-phase three-level (3-L) Sparse Neutral Point Clamped converter (SNPCC) for industrial variable speed drives (VSDs). The operating principle of the SNPCC, which advantageously employs a lower number of power transistors than a conventional 3-L inverter, is described in detail, focusing on the AC-side differential-mode and common-mode voltage formation and on the DC-side mid-point current generation processes. The degrees of freedom in the SNPCC modulation scheme are defined and several switching sequences are investigated. Afterwards, the stresses on the active and passive components (e.g. semiconductor losses, machine phase current ripple, DC-link capacitor RMS current, etc.) are calculated by analytical and/or numerical means, enabling a straightforward performance comparison among the identified switching sequences. The most suited modulation strategy for VSD applications is then selected and a chip area sizing procedure, aimed at minimizing the total semiconductor chip size, is applied to a 800V 7.5kW three-phase system. The performance limits of the designed SNPCC are evaluated and finally compared to the ones of conventional 2-L and 3-L solutions, highlighting the promising cost/performance trade-off of the analyzed topology.

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A new three‐level simplified sparce NPC topology for UHS PMSM motor applications

Sheianov,

Xiao,

Sun

2023

IET Electric Power Appl

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In ultra‐high speed (UHS) motor applications, full SIC two‐level (2L) inverters with high switching frequencies are generally used due to their lower cost. However, even with the usage of all WBG power devices, high‐frequency hard‐switched 2L inverters still do not achieve optimal efficiency characteristics. As a result, in order to simultaneously reduce the switching frequency and enhance overall efficiency, recently three‐level (3L) topologies have emerged as a promising solution. Nevertheless, to fully meet the requirements of UHS applications, the switching frequency of 3L inverters should be increased beyond 30 kHz, which necessitates the usage of all SIC power devices. This, in turn, leads to a potential drawback where the cost of the drive system may become prohibitively high due to the requirement of all SIC switches. To address this issue and reduce the cost of a full SIC 3L inverter, a new 3L simplified sparse NPC (SSNPC) topology is proposed in this work. The operational principle of this topology, its distinctive control features, and the advantages it offers specifically for UHS applications are presented. Additionally, to further increase the efficiency and reduce the influence of dead time at low speeds, a new switching sequence is introduced. Finally, the overall performance and efficiency characteristics of the high‐frequency SSNPC inverter were verified across all operational conditions of UHS motor drive system.

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Space vector modulation for three-level simplified neutral point clamped (3L-SNPC) inverter

Cited by 19 publications

References 12 publications

Simplified Four-Level Inverter-Based Dynamic Voltage Restorer With Single DC Power Source

Simplified Four-Level Inverter-Based Dynamic Voltage Restorer With Single DC Power Source

Analysis and performance evaluation of a three-phase sparse neutral point clamped converter for industrial variable speed drives

A new three‐level simplified sparce NPC topology for UHS PMSM motor applications

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