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
An improved asymmetrical multilevel inverter topology with reduced semiconductor device count
Zeeshan Sarwer,Marif Daula Siddique,Atif Iqbal,Adil Sarwar,Saad Mekhilef,Saad Mekhilef,Saad Mekhilef +6 more
Journal ArticleDOI
An improved single phase transformerless inverter topology for grid connected PV system with reduce leakage current and reactive power capability
Zameer Ahmad,S. N. Singh +1 more
TL;DR: An improved H6 common mode voltage (CMV) clamped topology with modified modulation strategy is proposed and offers low loss ac side decoupling, complete elimination of leakage current via CMV clamping and reactive power generation capability.
Journal ArticleDOI
Modified Modular Multilevel Converter to Reduce Submodule Capacitor Voltage Ripples Without Common-Mode Voltage Injected
TL;DR: This paper presents a modified modular multilevel converter with the three-terminal middle-cells inserted between arms and ac-side for medium voltage applications to reduce the submodule capacitor voltage ripples by controlling the high-frequency powers flowing among arm branches for low-frequency output operations without common-mode voltage injected in ac- side.
Journal ArticleDOI
A Nine-Level Inverter for Low-Voltage Applications
TL;DR: Simulation and experimental results under different settings of modulation index, power factor, output frequency, and load are presented to verify the effectiveness and performances of the proposed inverter.
Journal ArticleDOI
A new model predictive control algorithm by reducing the computing time of cost function minimization for NPC inverter in three-phase power grids
TL;DR: This paper presents a modified method that effectively reduces the computation load compare with conventional FCS-MPC method and at the same time does not affect on control performance, and can be used for exchanging power between electrical grid and DC resources by providing active and reactive power compensations.
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.