Proceedings ArticleDOI
Analytical study of the DC link capacitors voltage ripple in three level Neutral Point Clamped Inverters
Alejandro Munduate,I. Garin,Emilio Figueres,Gabriel Garcera +3 more
- pp 552-555
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TLDR
In this paper, an analytical study of the low frequency voltage ripple in the capacitors of a three level neutral point clamped topology, as a function of the DC link capacitors value and of the load impedance, is presented.Abstract:
Multilevel voltage source inverters have drawn a great interest in high power applications. These converters typically synthesize a staircase voltage waveform from several levels of DC capacitor voltages. It's well known that there is a big low frequency voltage ripple in the converter DC link capacitors in steady state, which affects the voltage to be blocked by the power transistors, so that the knowledge of this ripple is very important for the design of the converter. The capacitors voltage ripple also affects the harmonic distortion of the inverter output waveform. This paper presents an analytical study of the low frequency voltage ripple in the capacitors of a three level neutral point clamped topology, as a function of the DC link capacitors value and of the load impedanceread more
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Book ChapterDOI
Loss Comparison of Two- and Three-Level Inverter Topologies
TL;DR: In this article, the authors investigated semiconductor and DC-link capacitor losses in two two-level and two three-level voltage source inverters and found that the three level neutral-point-clamped inverter was the most efficient topology.
Journal ArticleDOI
DC Side Ripple Voltage Analysis and Fuzzy PI Control Strategy Research for APF
Ting Wu,Jian-Feng Yang,Qing Miao +2 more
TL;DR: In this paper, a technique based on the analysis of the ripple voltage in DC side by graining appropriately the undulation control rate within the range of settings and control DC voltage so that the voltage fluctuation rate can reach minimum value under the condition of specific capacitance which is aimed at getting good compensation effects.
Proceedings ArticleDOI
Electrolytic capacitor ripple current analysis of SPWM NPC three-level inverter
TL;DR: In this article, the equivalent circuit model of electrolytic capacitor and the analytical expression of ripple current are analyzed in a three level inverter and the validity of the expression is verified with simulation in MATLAB/Simulink.
Proceedings ArticleDOI
Design Considerations of Multi-Phase Multilevel Inverters for High-Power Density Traction Drive Applications
TL;DR: In this paper , the effect of GaN-based 3L-ANPC inverters on high-speed Permanent Magnet Synchronous Machines (PMSMs) with an 800V DC bus was investigated.
Patent
Compensator balancing the voltages of the DC bus capacitors in a power converter three levels.
TL;DR: In this article, a compensation system for balancing capacitor voltages in the three level converter mounting type diode (NPC: Neutral Point-Clamped-converter) is presented.
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.
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.
Book
Pulse Width Modulation for Power Converters: Principles and Practice
D. Grahame Holmes,Thomas A. Lipo +1 more
TL;DR: In this paper, an integrated and comprehensive theory of PWM is presented and the selection of the best algorithm for optimum pulse width modulation is an important process that can result in improved converter efficiency, better load (motor) efficiency, and reduced electromagnetic interference.
Journal ArticleDOI
Multilevel converters for large electric drives
TL;DR: Simulation and experimental results show the superiority of the back-to-back diode-clamped converter over two-level pulsewidth-modulation-based drives.
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