Journal ArticleDOI
Three Phase Three-Level PWM Switched Voltage Source Inverter With Zero Neutral Point Potential
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TLDR
In this paper, a three phase three-level pulsewidth modulation (PWM) switched voltage source inverter with zero neutral point potential is proposed, which is suitable for applications with low voltage sources such as batteries, fuel cells, or solar cells.Abstract:
A new three phase three-level pulsewidth modulation (PWM) switched voltage source inverter with zero neutral point potential is proposed. It consists of three single-phase inverter modules and each module is composed of a switched voltage source and inverter switches. The major advantage is that the peak value of the phase output voltage is twice as high as that of the conventional neutral-point-clamped PWM inverter. Thus, the proposed inverter is suitable for applications with low voltage sources such as batteries, fuel cells, or solar cells. Furthermore, three-level waveforms of the proposed inverter can be achieved without the switch voltage unbalance problem. Since the average neutral point potential of the proposed inverter is zero, a common ground between the input stage and the output stage is possible. Therefore, it can be applied to a transformerless power conditioning system. The proposed inverter is verified by a PSpice simulation and experimental results based on a laboratory prototyperead more
Citations
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Multi-level conversion : high voltage choppers and voltage-source inverters
TL;DR: In this paper, a multilevel commutation cell is introduced for high-voltage power conversion, which can be applied to either choppers or voltage-source inverters and generalized to any number of switches.
Journal ArticleDOI
Detection Method for Open-Circuit Fault in Neutral-Point-Clamped Inverter Systems
TL;DR: The proposed fault detection method for open-circuit faults of a switching device in neutral-point-clamped inverter systems is based on the inherent characteristic of continuous pulsewidth modulation and has faster detection capability that is within two sampling times and is much simpler to implement.
Journal ArticleDOI
Design and Application of a Single Phase Multilevel Inverter Suitable for using as a Voltage Harmonic Source
TL;DR: In this paper, a single phase multilevel inverter for using as a voltage harmonic source is presented and the structural parts of the inverter are described and an improved formula for determining switching angles is given.
Proceedings ArticleDOI
Study of neutral point potential variation for three-level NPC inverter under fault condition
TL;DR: In this article, the authors investigated both normal and fault conditions under carrier-based PWM and investigated the relation between fault detection time and the size of capacitor in a three-level Diode Clamped Multilevel Inverter.
Journal ArticleDOI
Exact Linearization Nonlinear Neutral-Point Voltage Control for Single-Phase Three-Level NPC Converters
TL;DR: In this paper, a quasi-exact linearization is applied allowing the application of classic control techniques for the neutral point (NP) balance in single-phase three-level NP-clamped converters.
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.
Proceedings ArticleDOI
Multilevel converters-a new breed of power converters
Jih-Sheng Lai,Fang Zheng Peng +1 more
TL;DR: This paper presents three multilevel voltage source converters: (1) diode-clamp, (2) flying-capacitors, and (3) cascaded-inverters with separate DC sources.
Multi-level conversion : high voltage choppers and voltage-source inverters
TL;DR: In this paper, a multilevel commutation cell is introduced for high-voltage power conversion, which can be applied to either choppers or voltage-source inverters and generalized to any number of switches.