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
Reducing neutral-point voltage fluctuation in NPC three-level active power filters
TL;DR: In this article, two compensating schemes are proposed to restrict voltage fluctuation in the inverters of neutral-point-clamped (NPC) three-level inverters.
Journal ArticleDOI
A Direct Method for Generating Optimum Sequence of Switching Vectors for Multilevel Inverters
TL;DR: Simple generalized equations involving only arithmetic operation are developed for generating the duty cycles for the gating signals in optimum sequence, from the switching states and their durations.
Proceedings ArticleDOI
Power loss evaluation for medium voltage drive system based on back-to-back three-level NPC converter integrated with induction machine
TL;DR: The paper deals with loss issues in an experimental 3.3 kV drive system consisting of back-to-back three-level NPC converter integrated with an induction machine, which significantly reduces the size and weight of the whole drive system.
Journal ArticleDOI
Switched-Capacitor-Based Neutral-Point-Clamped Quasi-Switched Boost Multilevel Inverter
Ajaykumar T,Nita R. Patne +1 more
TL;DR: The working principle and steady-state analysis of proposed topology are presented in order to obtain mathematical relation between input and output voltages and the effectiveness of the proposed inverter has been compared with other impedance-source multilevel inverters in terms of voltage gain, boosting capability, voltage stresses and efficiency.
Proceedings ArticleDOI
Thirteen-Level Modified Packed U-Cell Multilevel Inverter for Renewable-Energy Applications
TL;DR: The improvement in the output waveform and the reduced harmonic distortion are pointed out, which prove the efficiency of the proposed inverter.
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.