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
Model Predictive Control for a Hybrid Multilevel Converter With Different Voltage Ratios
Shuai Xu,Jianzhong Zhang,Xing Hu +2 more
TL;DR: Experimental results validate the effectiveness of the proposed model predictive control strategy for the HMCs under various operating conditions, and the sensitivity of parameters is also studied with large load variations.
Proceedings ArticleDOI
Multi-megawatt wind turbine converter configurations suitable for off-shore applications, combining 3-L NPC PEBBs
TL;DR: In this article, two power converter configurations, suitable for an off-shore wind turbine in the range of 6 MW, are presented, which may either drive a Permanent Magnet Generator (PMG) or an Electrically Excited Synchronous Generator (EESG), are built combining a number of water-cooled, 3.1 kV, 3-Level Neutral Point Clamped (3L-NPC) Power Electronic Building Blocks (PEBB).
Journal ArticleDOI
A Cascaded Multi-level Inverter Topology with Improved Modulation Scheme
TL;DR: In this paper, a single-carrier, multilevel pulsewidth modulation scheme is employed to generate gating signals for he power switches, and a sequential switching scheme is embedded with the already employed hybrid modulation to overcome unequal switching losses among the power devices.
Journal ArticleDOI
New mixed stacked multicell converter with interesting advantages
TL;DR: In this article, a new configuration of multicell converters is presented, in which the number of high-frequency switches is decreased while the voltage ratings of them during a full cycle are kept constant.
Journal ArticleDOI
A Novel Z-Type Modular Multilevel Converter With Capacitor Voltage Self-Balancing for Grid-Tied Applications
Tong Zheng,Congzhe Gao,Xiangdong Liu,Xiaozhong Liao,Jun Liang,Zhen Chen,Baiyan Sun,Jingliang Lv +7 more
TL;DR: A novel Z-type MMC is proposed, which can achieve capacitor voltage self-balancing without any balancing control, and the overall control of the converter is significantly simplified.
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.