Results 221 to 230 of about 472,625 (280)

Transformerless interleaving multilevel NPC inverter for photovoltaic systems

2015 IEEE 13th Brazilian Power Electronics Conference and 1st Southern Power Electronics Conference (COBEP/SPEC), 2015
This paper proposes a transformerless multilevel NPC (Neutral Point Clamped) inverter for grid-connected photovoltaic systems, applying the concept of high power density, using Gallium Nitride power transistors and employing interleaving strategy for reducing the weight/volume of the passive filter elements.
Gustavo Finamor, Marcel Dall Pai, Humberto Pinheiro, Luciano Schuch   +3 more
openaire   +1 more source

MATLAB Simulation of Space Vector Pulse Width Modulation for 3-level NPC Inverter and 2-level Inverter

2021 International Conference on Sustainable Energy and Future Electric Transportation (SEFET), 2021
Multilevel inverters have been used in various applications alternative to 2-L inverter due to advantages like reduction in THD. Among modulation techniques, space vector modulation (SVM) is a commonly used method for multilevel inverters. Therefore many
A. Panda, Giribabu Dyanamina, R. Singh
semanticscholar   +1 more source

A Si/SiC Hybrid Five-Level Active NPC Inverter With Improved Modulation Scheme

IEEE transactions on power electronics, 2020
Compared with full-silicon-carbide (SiC) mosfet converters, the hybrid utilization of Si/SiC converters is an alternative approach to achieve the tradeoff between performance and cost.
Li Zhang, Zhongshu Zheng, Chushan Li, P. Ju, Feng Wu, Yifan Gu, Guang-xiang Chen   +6 more
semanticscholar   +1 more source

Comparative evaluation of three single-phase NPC inverters

2012 10th IEEE/IAS International Conference on Industry Applications, 2012
In this paper is presented a comparative evaluation in steady-state of three single-phase NPC multilevel inverters. The first is a five-level neutral point clamped (NPC) inverter based on multi-stage switching cell (MSSC); the second is also a five-level neutral point clamped (NPC) inverter based on interleaved cell (IC); and the third is a three-level
Joao A. F. Neto, Rene P. T. Bascope, C. M. Cruz, Ronny G. A. Cacau, Grover V. T. Bascope   +4 more
openaire   +1 more source

Transformerless PV Three Level NPC Central Inverter

2019
Generally inverter is developed with centre on high reliability, low cost and mass-production for transformed electrical energy from the PV module to the grid. Basically the DC/AC inverters are used in grid connected photovoltaic energy production systems as the power processing interface between the electric grid and the photovoltaic energy source ...
Mohammed Yassine Dennai, Hamza Tedjini, Abdelfettah Nasri   +2 more
openaire   +1 more source

Robust Predictive Control for NPC Grid-Connected Inverters

Applied Mechanics and Materials, 2014
In this paper, the state space model of neutral point clamped three-level grid-connected inverter is detailed derived and an Robust Predictive Control (RPC) method is proposed. In the proposed method, the total 27 switching vectors composed of a finite set from which the optimal switching vector is selected according to a cost function.
Lu Jun Wang, Tao Gong, Jun Zhu
openaire   +1 more source

Elimination of Abnormal Output Voltage in a Hybrid Active NPC Inverter

IEEE transactions on power electronics, 2021
This article proposes a method to eliminate abnormal output voltages generated in three-level hybrid active neutral-point clamped (ANPC) inverters. The hybrid ANPC inverter is a topology in which silicon (Si) devices are replaced with silicon-carbide ...
Min-Geun Song, Seok-Min Kim, Kyo-Beum Lee   +2 more
semanticscholar   +1 more source

Control Methods for Tripled Structure NPC Inverter

2013
Voltage waveform of single inverter contains more harmonics. In order to reduce the harmonic content, the H-bridge inverter with multiple structures was used to obtain a low harmonic voltage. However, this paper explored the multiple method based on the neutral point clamped inverter for obtaining the multiple circuit with lower harmonic content than ...
Cheng Zeng, Hong Zheng
openaire   +1 more source

Diagnosis of a NPC inverter using Goertzel Filters

2019 23rd International Conference on System Theory, Control and Computing (ICSTCC), 2019
Insulated Gate Bipolar Transistors (IGBTs), found in Neutral Point Clamped inverters, can be affected by open-circuit and short-circuit faults. A common mistake found in several papers, from the literature, is highlighted and corrected in this work. The amended method, based on the Park Transform, is extended to isolate the faulty IGBT in a three-level
Abdelkarim, Abdelkarim, Chafouk, Houcine, Gliga, Lavinius, Popescu, Dumitru   +3 more
openaire   +1 more source

Pole-restraining control for npc three-level inverter

2012 IEEE International Energy Conference and Exhibition (ENERGYCON), 2012
State-of-the-art control approaches often neglect the time-variant characteristics of power-electronic systems in favour of a time-averaged approach. In consequence, the resulting system is partly instable, thus, not optimally controlled. The pole-restraining control (PRC) removes the inherent instability, giving considerably improved dynamic behaviour
M. Seifert, C. Heising, R. Bartelt, Volker Staudt, Andreas Steimel   +4 more
openaire   +1 more source