Journal ArticleDOI
A Survey on Neutral-Point-Clamped Inverters
TLDR
The basic operation and the most used modulation and control techniques developed to date of neutral-point-clamped inverters are presented and some technological problems such as capacitor balance and losses are presented.Abstract:
Neutral-point-clamped (NPC) inverters are the most widely used topology of multilevel inverters in high-power applications (several megawatts). This paper presents in a very simple way the basic operation and the most used modulation and control techniques developed to date. Special attention is paid to the loss distribution in semiconductors, and an active NPC inverter is presented to overcome this problem. This paper discusses the main fields of application and presents some technological problems such as capacitor balance and losses.read more
Citations
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Journal ArticleDOI
A Generalized Carrier-Overlapped PWM Method for Neutral-Point-Clamped Multilevel Converters
TL;DR: A novel generalized carrier-based PWM method, named carrier-overlapped PWM (COPWM), for NPC multilevel converters is proposed in this article, which is proven to satisfy the volt–second balance principle.
Journal ArticleDOI
Multicarrier Interleaved PWM Strategies for a Five-Level NPC Inverter Using a Three-Phase Coupled Inductor
TL;DR: Improved multilevel interleaved pulsewidth modulation techniques are presented based upon the concept of interchangeability of switching states in each phase and how the inductor current ripple and the related power losses are significantly reduced using the proposed PWM scheme.
Journal ArticleDOI
Compact Three Phase Multilevel Inverter for Low and Medium Power Photovoltaic Systems
Md. Halim Mondol,Mehmet Rida Tur,Shuvra Prokash Biswas,Md. Kamal Hosain,Shuvangkar Shuvo,Eklas Hossain +5 more
TL;DR: A new three phase multilevel inverter with reduced number of components count is proposed using a single DC source per phase to generate multiple level output voltage which makes it suitable for low and medium voltage applications, including ac-coupled renewables or energy storages.
Journal ArticleDOI
Variable Modulation Offset SPWM Control to Balance the Neutral-Point Voltage for Three-Level Inverters
TL;DR: In this paper, the authors proposed a method to balance the neutral point voltage for three-level inverters with variable modulation wave offset sinusoidal pulsewidth modulation (SPWM) control.
Journal ArticleDOI
A New Breed of Optimized Symmetrical and Asymmetrical Cascaded Multilevel Power Converters
TL;DR: In this paper, the authors proposed an optimized topology for symmetrical voltage source power converters (SCM) multilevel converters, where the number of required high-frequency power switches is reduced.
References
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Journal ArticleDOI
Multilevel inverters: a survey of topologies, controls, and applications
TL;DR: 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.
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.
Journal ArticleDOI
Multilevel Voltage-Source-Converter Topologies for Industrial Medium-Voltage Drives
TL;DR: This paper covers the high-power voltage-source inverter and the most used multilevel-inverter topologies, including the neutral-point-clamped, cascaded H-bridge, and flying-capacitor converters.
Journal ArticleDOI
Pulsewidth modulation-a survey
TL;DR: The author provides a guideline and quick reference for the practicing engineer to decide which methods should be considered for an application of a given power level, switching frequency, and dynamic response.