Journal ArticleDOI
Modular Multilevel Converters for HVDC Applications: Review on Converter Cells and Functionalities
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In this article, the principle of modularity is used to derive the different multilevel voltage and current source converter topologies for high-power dc systems, where the derived converter cells are treated as building blocks and are contributing to the modularity of the system.Abstract:
In this paper, the principle of modularity is used to derive the different multilevel voltage and current source converter topologies. The paper is primarily focused on high-power applications and specifically on high-voltage dc systems. The derived converter cells are treated as building blocks and are contributing to the modularity of the system. By combining the different building blocks, i.e., the converter cells, a variety of voltage and current source modular multilevel converter topologies are derived and thoroughly discussed. Furthermore, by applying the modularity principle at the system level, various types of high-power converters are introduced. The modularity of the multilevel converters is studied in depth, and the challenges as well as the opportunities for high-power applications are illustrated.read more
Citations
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Journal ArticleDOI
Auxiliary Power Supplies for High-Power Converter Submodules: State of the Art and Future Prospects
TL;DR: In this paper , a review of the wide range of solutions for APSs, possible implementation options, and the most important design considerations are presented. But, there has, however, been comparably little research on how the APS of high-power converter submodules can be realized, in particular, for high-voltage applications.
Proceedings ArticleDOI
Comparison of cell selection methods for modular multilevel converters
TL;DR: In this article, the average switching frequency, magnitude of the capacitor's voltage ripple and complexity of the implementation of a multilevel-based power converter are analyzed in a broad range of operating conditions.
Proceedings ArticleDOI
A Variable Switching Frequency PWM Control Method for Single-Phase MMC
TL;DR: In this paper, the carrier frequency of the single-phase modular multilevel inverter (MMC) change with the output current by using variable switching frequency PWM (VSFPWM).
Proceedings ArticleDOI
High-performance Integrated Modulation Scheme for Modular Multilevel Converters
TL;DR: In this article, a virtual bus-clamping technique (VBC) is introduced for a modular multilevel converter (MMC) in which submodules (SMs) in each arm are virtually clamped to either positive or negative dc-bus voltage.
Journal ArticleDOI
Interfacing an EMT-type modular multilevel converter HVDC model in transient stability simulation
Xuekun Meng,Liwei Wang +1 more
TL;DR: This study proposes a hybrid electromechanical and electro-magnetic transient (EMT) simulation algorithm, which interfaces the EMT-type modular multilevel converter (MMC) high-voltage direction current (HVDC) model into transient stability simulation.
References
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A New Neutral-Point-Clamped PWM Inverter
TL;DR: In this article, a neutral-point-clamped PWM inverter composed of main switching devices which operate as switches for PWM and auxiliary switching devices to clamp the output terminal potential to the neutral point potential has been developed.
Journal ArticleDOI
A New Neutral-Point-Clamped PWM Inverter
TL;DR: The neutral-point-clamped PWM inverter adopting the new PWM technique shows an excellent drive system efficiency, including motor efficiency, and is appropriate for a wide-range variable-speed drive system.
Proceedings ArticleDOI
Multilevel converters-a new breed of power converters
Jih-Sheng Lai,Fang Zheng Peng +1 more
TL;DR: This paper presents three multilevel voltage source converters: (1) diode-clamp, (2) flying-capacitors, and (3) cascaded-inverters with separate DC sources.
BookDOI
Wind Power in Power Systems
TL;DR: In this article, the authors focus on the generation of electricity from clean and renewable sources, and show that wind energy has become the world's fastest growing energy source, and that renewable energy is the most promising energy source.
Proceedings ArticleDOI
An innovative modular multilevel converter topology suitable for a wide power range
A. Lesnicar,Rainer Marquardt +1 more
TL;DR: In this article, a new multilevel converter topology suitable for very high voltage applications, especially network interties in power generation and transmission, is presented, and a suitable structure of the converter-control is proposed.
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An innovative modular multilevel converter topology suitable for a wide power range
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