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
Neutral point voltage level stabilization and DC link capacitors voltage balance in neutral point clamped multilevel inverters
K. Anuradha,Gandla Radha Krishna +1 more
TL;DR: A control strategy is proposed in this paper for controlling both problems and is applied for NPC three level, five level, seven level and nine level inverter and total harmonic distortion values are observed for the developed control technique.
Proceedings ArticleDOI
Analytic determination of conduction power losses in flying capacitor multicell power converter
TL;DR: In this article, the conduction power loss in flying capacitor multicell (FCM) converters is investigated by calculating the rms and average currents of the IGBTs and anti-parallel diodes.
Proceedings ArticleDOI
A simple potential balancing strategy for neutral-point-clamped inverter fed direct torque control induction machines
N. Faezah Alias,Auzani Jidin,Huzainirah Ismail,R. N. Firdaus,M. Khairi Rahim,Atikah Razi,Wahidah Abd Halim +6 more
TL;DR: In this article, a two-level hysteresis comparator is used to restrict the error voltage, i.e. difference of upper and lower capacitors voltage within the hystresis band.
Proceedings ArticleDOI
Nine level T-type neutral point clamped voltage source inverter for induction motor drive
Teenu Techela Davis,Anubrata Dey +1 more
TL;DR: A new PWM technique is proposed to balance the flying capacitors during common-mode voltage injection so that the inverter can deliver full active power up to modulation index of 1.15.
Journal ArticleDOI
An Improved Multimode Synchronized Space Vector Modulation Strategy for High-Power Medium-Voltage Three-Level Inverter
TL;DR: The amplitude of the average current ripple vector is introduced as the evaluation index of the output waveform quality and an improved multimode synchronized modulation strategy for three-level inverters is proposed.
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.