Mathematical simulation technique for power systems based on diode-clamped multilevel VSC

Dybko, M. A.; Brovanov, Sergey V.; Kharitonov, Sergey A.

doi:10.1109/eurocon.2013.6625095

Cited by 12 publications

(7 citation statements)

References 10 publications

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“…At the same time, the increased number of the output voltage levels leads to an output voltage quality improvement. The Three-Level (3L) Neutral Point Clamped (NPC) inverter is one of the most popular solutions among the multilevel topologies [12]- [18]. In case of full-bridge utilization it gives five-level output voltage.…”

mentioning

confidence: 99%

Novel Space Vector Pulsewidth Modulation Strategies for Single-Phase Three-Level NPC Impedance-Source Inverters

Shults

Husev

Blaabjerg

et al. 2019

IEEE Trans. Power Electron.

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IEEE Transactions on Power Electronics Abstract-This paper presents new Space Vector Pulse-Width Modulation (SVPWM) strategies for a single-phase three-level buck-boost Neutral Point Clamped (NPC) inverter coupled with Impedance-Source (IS) networks. These strategies can be implemented for systems with any IS networks with neutral point. The case study system is based on the quasi-Z-source inverter with continuous input current. To demonstrate an improved performance, the strategies are compared with a traditional pulsewidth modulation strategy. The advantages lie in reduced switching number, without output voltage quality distortion. The simulation and experimental results confirm the theoretical predictions. I. INTRODUCTION Present technologies and innovations have led to the expansion of Photovoltaic (PV) energy generation systems worldwide [1]-[4]. PV energy sources are characterized by a wide output voltage and power variation. The solar irradiation level changes significantly during the day and gives a variable output power. Also, the shading or high operating temperature of the PV module leads to a significant out-voltage drop. Therefore, the converter for a PV system should have a wide input voltage and output load regulation range.To extend the input voltage regulation range, solutions based on Impedance-Source (IS) networks have been proposed [5]- [11]. They have a buck mode, a boost mode and do not suffer from the Shoot-Through (ST) [5] states compare to the conventional grid-connected inverters.

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mentioning

confidence: 99%

Novel Space Vector Pulsewidth Modulation Strategies for Single-Phase Three-Level NPC Impedance-Source Inverters

Shults

Husev

Blaabjerg

et al. 2019

IEEE Trans. Power Electron.

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“…It can be transformed into a form suitable for the synthesis of an automated control system. Considering Equations (10) and (11), the following is obtained:…”

Section: Smmentioning

confidence: 99%

“…Brovanov et al [10] provide a detailed analysis of electromagnetic processes occurring in the power circuit of a three-level converter with the NPC topology in autonomous electric power generation systems. As mentioned before, during the reactive power generation or consumption mode operation, the loads on the semiconductor converter modules become even more unequally distributed while the voltage in the DC link becomes more unbalanced, and the quality of converter power decreases insignificantly.…”

Section: Introductionmentioning

confidence: 99%

Control over Grid Reactive Power by Using a Powerful Regenerative Controlled-Speed Synchronous Motor Drive

Maklakov

Nikolaev

Lisovskaya

2023

Designs

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The authors propose a technique for reactive power compensation using a powerful regenerative controlled-speed synchronous motor drive (SMD) based on a three-level (3L) neutral point clamped (NPC) active front-end rectifier (AFE) and a voltage source inverter (VSI). The review of technical solutions for reactive power compensation showed that the limitations on the transmitted reactive power in the system under consideration still have not been studied. The paper provides a mathematical description and proposes synthesis-friendly block diagrams of the mathematical 3L-NPC-AFE-VSI and SMD models. The developed models allow defining the instantaneous values of the total 3L-NPC-AFE power consumed from the grid depending on the SMD load diagram. It is noted that the 3L-NPC-AFE-VSI-SMD system is designed without considering the opportunities for reactive power generation. It was determined that the limit value of reactive power generated by a 3L-NPC-AFE depends on the DC link voltage, the grid current consumption and the modulation index. The possibility of reactive power compensation by the SMD system through a 3L-NPC-AFE was experimentally tested on the main drive of a metal plate hot rolling mill. The analysis of the results obtained showed that during the breakdown, an SMD can generate reactive power equal to 16% of the total rated power using a 3L-NPC-AFE at a rated DC link voltage and without overcurrent. It was shown that generating reactive power is expedient in low-load SMD operation modes or at idle. Research in this area is promising due to the widespread use of high-power SMD based on a 3L-NPC-AFE-VSI and the tightening of requirements for energy saving and efficiency and supply voltage quality. The proposed reactive power control technique can be used as part of an industrial smart grid.

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“…На рис. 1 приведена схема рассматриваемого однофазного трехуровневого преобразователя, в данном случае выпрямителя, и система образующих век-торов широтно-импульсной модуляции (ШИМ) [9][10][11][12][13][14][15]. Анализ комбинаций состояний ключей (КСК) данной схемы демонстрирует тот факт, что ни одна из комбинаций состояний ключей нулевого вектора не оказывает влияния на формирование тока средней линии N i .…”

Section: анализ тока средней линииunclassified

Effect of single-phase capacitor voltage unbalance three-level inverter on a fluctuating component of their currents

Brovanov¹,

Dybko²,

Grishanov³

2014

Transaction of Scientific Papers of the NSTU

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* Статья получена 01 июля 2014 г. Работа выполнена в рамках Программы стратегического развития НГТУ, тема «Повышение энергетической эффективности статических компенсаторов неактивной мощности, реализуемых на базе параллельно включенных многоуровневых преобразователей».

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Mathematical simulation technique for power systems based on diode-clamped multilevel VSC

Cited by 12 publications

References 10 publications

Novel Space Vector Pulsewidth Modulation Strategies for Single-Phase Three-Level NPC Impedance-Source Inverters

Novel Space Vector Pulsewidth Modulation Strategies for Single-Phase Three-Level NPC Impedance-Source Inverters

Control over Grid Reactive Power by Using a Powerful Regenerative Controlled-Speed Synchronous Motor Drive

Effect of single-phase capacitor voltage unbalance three-level inverter on a fluctuating component of their currents

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