A Fast Multilevel SVPWM Method Based on the Imaginary Coordinate With Direct Control of Redundant Vectors or Zero Sequence Components

Yuan, Xibo; Gao, Yuxi

doi:10.1109/ojies.2020.3044705

Cited by 14 publications

(17 citation statements)

References 26 publications

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“…The demonstration of using the Type I method can be found in reference [9] as an example. The demonstration of using the Type II method can be found in reference [11]. And the demonstration of using the Type III method can be found in reference [13] according to specific topologies.…”

Section: The Proposed Generalized Topology and Derived Topology Examplesmentioning

confidence: 99%

“…Besides the research on topologies, the modulation and control must come hand in hand to make sure the proper operation of the topologies, e.g., balancing the voltages of dclink capacitors and flying capacitors. There are mainly three types of modulation and control methods [11]. The first one is the selection of switching states within each phase leg (Type I), where there are redundant switching states for the same output voltage level within each phase leg.…”

Section: Introductionmentioning

confidence: 99%

“…The second type of methods is the conventional space vector modulation which normally uses the nearest three vectors (NTV) or carrier-based modulation using zero-sequence voltage injection from a three-phase point of view (Type II). The redundant vectors in the multilevel space vector modulation and the optimal zero-sequence signal can be used to regulate the capacitor voltages [11]. This type of methods is unable to control the capacitor voltages in certain types of topologies such as the NPC topologies with higher number of voltage levels (e.g., four levels and higher) at high modulation indexes and high power factors as well as some other simplified topologies.…”

Section: Introductionmentioning

confidence: 99%

“…This type of methods is unable to control the capacitor voltages in certain types of topologies such as the NPC topologies with higher number of voltage levels (e.g., four levels and higher) at high modulation indexes and high power factors as well as some other simplified topologies. This is because this type of methods only allows the voltage changing by one level in each switching period, which causes the limitation on the control capability [11]. The third type of methods is the virtual vector modulation [12] or redundant level modulation [13] (Type III).…”

Section: Introductionmentioning

confidence: 99%

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Ultimate Generalized Multilevel Converter Topology

Yuan

2021

IEEE Trans. Power Electron.

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There are various ways to derive multilevel converter topologies as pointed out by the author's previous work. This letter proposes a voltage-source generalized multilevel converter topology which unifies several generalized multilevel topologies and also incorporates bi-directional switches. Most of the known multilevel topologies can be derived from this topology and new topologies can also be derived from it. Examples have been given in this letter. This generalized topology helps to understand complicated converter topologies, especially those with bidirectional switches and it can also be used to determine the voltage requirements/ratings of the devices in various topologies. This letter has summarized the rules to derive topologies from this generalized topology and provides experimental results for one of the derived multilevel converter examples. It is expected new topologies can be inspired or derived from this work and used for existing and emerging applications, with this letter as a milestone in the research of multilevel converter topologies.

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Section: The Proposed Generalized Topology and Derived Topology Examplesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ultimate Generalized Multilevel Converter Topology

Yuan

2021

IEEE Trans. Power Electron.

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“…The modulation is included in the MPC structure and then applied to the SAPF based on a two-level VSI to reduce THD currents. A fast multilevel SVPWM method based on the imaginary coordinate with direct control of redundant vectors or zero sequence components is proposed in (Yuan et al, 2020). This latter presents a modification of the SVPWM technique based on the imaginary coordinate system, which is applied to different topologies of multilevel converters.…”

Section: Introductionmentioning

confidence: 99%

MPC with Space Vector Phase-Shift PWM (SV-PSPWM) Technique with Harmonic Mitigation Strategy for Shunt Active Power Filters Based on H-Bridge Multilevel Converter

et al. 2022

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This article presents a model predictive current control of a shunt active power filter based on 7-level cascaded H-bridge converters. By using the spacial vector modulation approach into the model predictive control, a considerable reduction of the computational burden is achieved and makes possible the real-time implementation in a custom experimental setup. Then, the current harmonics on the grid side, caused by non-linear loads connected to the point of common coupling, are compensated. The experimental results confirmed the feasibility and efficacy of the proposed controller.

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Level vector pulse width modulation for multilevel inverters

Qanbari

Tousi

Farhadi‐Kangarlu

2023

Circuit Theory & Apps

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SummaryIn this paper, a novel method named as level vector pulse width modulation (LVPWM) is proposed for multilevel inverters. Similar to the conventional space vector pulse width modulation (SVPWM), the proposed method is a vector‐based method in the α–β frame. Unlike the SVPWM, the variables of each of the α and β axes are considered separately. Instead of space vectors, level vectors are considered for the synthesis of the reference vectors. There is no need to consider multiple switching states, vectors, and large lookup tables in the algorithm. The appropriate switching states for the synthesis of the reference vectors are determined using simple computations at each sampling time. Generality for different inverter topologies, online implementation, simplicity of the algorithm and computations, independency of the algorithm complexity from the number of switching states, and easy extension to overmodulation region are the advantages of the proposed method. Implementation of the LVPWM in different inverter topologies is studied. The validation of the proposed modulation strategy is carried out by simulation and experimental results.

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A Fast Multilevel SVPWM Method Based on the Imaginary Coordinate With Direct Control of Redundant Vectors or Zero Sequence Components

Cited by 14 publications

References 26 publications

Ultimate Generalized Multilevel Converter Topology

Ultimate Generalized Multilevel Converter Topology

MPC with Space Vector Phase-Shift PWM (SV-PSPWM) Technique with Harmonic Mitigation Strategy for Shunt Active Power Filters Based on H-Bridge Multilevel Converter

Level vector pulse width modulation for multilevel inverters

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