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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Proceedings ArticleDOI
Thermal loading of wind power converter considering dynamics of wind speed
TL;DR: The junction temperatures in the wind power converter are studied under not only steady state, but also turbulent wind speed conditions and it is concluded that because of the strong inertia effects by the aerodynamic behavior of wind turbines, thermal stress of the semiconductors is relatively more stable and only influenced by the low band frequency of wind speed variations.
Journal ArticleDOI
A Carrier-Based PWM Control Strategy for Three-Level NPC Inverter Based on Bootstrap Gate Drive Circuit
TL;DR: The causes of the voltage decrease in bootstrap capacitors are analyzed and a PWM control strategy to increase the voltage level of bootstrapped capacitors is proposed for the efficient operation of the inverter.
Journal Article
Carrier-based pwm techniques for multi-level inverters: a comprehensive performance study
TL;DR: This work deals with a carrier based sinusoidal pulse width modulation strategies for three phase seven level cascaded H-bridge multilevel inverter with various modulation strategies based on the different arrangements of the carriers.
Proceedings ArticleDOI
An improved space vector PWM method for a three-level inverter with reduced THD
TL;DR: In this paper, a three phase three-level neutral point clamped inverter using space vector modulation technique is proposed to reduce the total harmonic distortion (THD) in the line voltage and line current.
Proceedings ArticleDOI
Generalized ZPUC Topology for Modular Multilevel Converter Applications
Saeed Arazm,Kamal Al-Haddad +1 more
TL;DR: Voltage balancing integrated with phase shift pulsed width modulation (PS-PWM) strategy without using external control system is employed in this paper to balance the voltage of flying capacitors (FCs).
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.