Journal ArticleDOI
Multilevel inverters: a survey of topologies, controls, and applications
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TLDR
The most important topologies like diode-clamped inverter (neutral-point clamped), capacitor-Clamped (flying capacitor), and cascaded multicell with separate DC sources are presented and the circuit topology options are presented.Abstract:
Multilevel inverter technology has emerged recently as a very important alternative in the area of high-power medium-voltage energy control. This paper presents the most important topologies like diode-clamped inverter (neutral-point clamped), capacitor-clamped (flying capacitor), and cascaded multicell with separate DC sources. Emerging topologies like asymmetric hybrid cells and soft-switched multilevel inverters are also discussed. This paper also presents the most relevant control and modulation methods developed for this family of converters: multilevel sinusoidal pulsewidth modulation, multilevel selective harmonic elimination, and space-vector modulation. Special attention is dedicated to the latest and more relevant applications of these converters such as laminators, conveyor belts, and unified power-flow controllers. The need of an active front end at the input side for those inverters supplying regenerative loads is also discussed, and the circuit topology options are also presented. Finally, the peripherally developing areas such as high-voltage high-power devices and optical sensors and other opportunities for future development are addressed.read more
Citations
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Journal ArticleDOI
A Fast and Generalized Space Vector Modulation Scheme for Multilevel Inverters
TL;DR: In this paper, a fast and generalized space vector pulse width modulation (SVPWM) scheme for any multilevel inverter is presented, where the switching states, duty cycles, and switching sequences are all obtained by simple calculation in the proposed SVPWM scheme.
Journal ArticleDOI
An Optimized SVPWM Strategy for Five-Level Active NPC (5L-ANPC) Converter
Guojun Tan,Qingwei Deng,Zhan Liu +2 more
TL;DR: In this article, the space vector pulse width modulation (SVPWM) strategy of the 5L-ANPC converter in the virtual coordinate is analyzed, and an optimized control strategy which can balance the neutral point voltage and avoid the dead-time effects for the first time is presented.
Journal ArticleDOI
Switched-Battery Boost-Multilevel Inverter with GA Optimized SHEPWM for Standalone Application
TL;DR: A boost-multilevel inverter design with integrated battery energy storage system for standalone application that requires significantly less power switches compared to conventional topology such as cascaded H-bridge multileVEL inverter, leading to reduced size/cost and improved reliability.
Journal ArticleDOI
Multilevel Multiphase Space Vector PWM Algorithm With Switching State Redundancy
TL;DR: In this article, a new space vector pulsewidth modulation algorithm for multilevel multiphase voltage source converters with switching state redundancy is introduced, which can be applied to the most usual multi-level topologies; it has low computational complexity and it is suitable for hardware implementations.
Journal ArticleDOI
Space-Vector Versus Nearest-Level Pulse Width Modulation for Multilevel Converters
Yi Deng,Ronald G. Harley +1 more
TL;DR: In this paper, the authors studied the inherent relationship between two widely used pulse width modulation (PWM) methods for multilevel converters, i.e., the space vector modulation (SVM) method and the nearest-level modulation method.
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.
Journal ArticleDOI
Direct self-control (DSC) of inverter-fed induction machine
TL;DR: Direct self-control (DSC) as discussed by the authors is a simple method of signal processing that gives converter-fed three-phase machines an excellent dynamic performance, and it is sufficient to process the measured signals of the stator currents and the total flux linkages only.
Journal ArticleDOI
Multilevel converters for large electric drives
TL;DR: Simulation and experimental results show the superiority of the back-to-back diode-clamped converter over two-level pulsewidth-modulation-based drives.