Results 251 to 260 of about 8,844,154 (290)

Modulation Techniques to Eliminate Leakage Currents in Transformerless Three-Phase Photovoltaic Systems

IEEE Transactions on Industrial Electronics, 2010
In some photovoltaic (PV) applications, it is possible to remove the transformer of a system in order to reduce losses, cost, and size. In transformerless systems, the PV module parasitic capacitance can introduce leakage currents in which the amplitude depends on the converter topology, on the pulsewidth modulation, and on the resonant circuit ...
Marcelo Cabral Cavalcanti, Kleber C. Oliveira, Alexandre M. Farias, Francisco A. S. Neves, Gustavo Medeiros de Souza Azevedo, Felipe C. Camboim   +5 more
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A new modulation technique to eliminate leakage current in transformerless PV inverter

2013 Students Conference on Engineering and Systems (SCES), 2013
In this paper a new modulation technique is proposed to eliminate the common mode leakage current in transformerless photovoltaic (PV) inverter topology. The proposed modulation technique uses third harmonic injection with multicarrier phase-shifted pulse width modulation. The modulation method is applied to the single-phase full-bridge five-level grid
A. Garg, S. Rajasekar, R. Gupta
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A New 5-level Grid-Connected Transformerless Inverter with Eliminating Leakage Current

2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia), 2020
This paper proposes a novel single-phase transformerless 5-level inverter for grid-connected photovoltaic (PV) system. The main advantages of the proposed inverter are 1) By direct connecting the neutral point of the grid to the negative terminal of the PV, this inverter can eliminate the leakage current; 2) It can boost the input voltage; 3) It does ...
Bagher Karami, Xu Yang, Mehdi Samizadeh, Wenjie Chen, Majid Kamranian, Alaaeldin Hassan, Mohamad Abou Houran   +6 more
openaire   +1 more source

Investigation of transformerless topologies for renewable energy applications eliminating leakage currents

MedPower 2014, 2014
In this paper two different approaches found in commercial inverter topologies are investigated in terms of leakage currents elimination. Due to parasitic capacitive elements between the metallic frame of PV systems and the ground earth, high frequency currents leak to the ground aging PV systems performance.
P. Kakosimos, A. Sarigiannidis, M. Beniakar, A. Kladas   +3 more
openaire   +1 more source

Eliminating leakage currents in transformerless Z-source inverters for photovoltaic systems

2011 IEEE International Symposium on Industrial Electronics, 2011
This paper presents a new pulse-width modulation that allows the three-phase Z-source inverter photovoltaic system operate without transformer and assuring very low leakage currents. Furthermore, a proper switching pattern is chosen in order to assure a reduced number of commutations, leading to reduced switching losses in the inverter.
Fabricio Bradaschia, Marcelo C. Cavalcanti, Pedro E. P. Ferraz, Euzeli C. dos Santos, Francisco A. S. Neves   +4 more
openaire   +1 more source

A New Transformerless Photovoltaic Inverter with Common Mode Leakage Current Elimination

2018 13th IEEE International Conference on Industry Applications (INDUSCON), 2018
This paper presents a new transformerless photovoltaic inverter to be connected to the grid which consists basically on four power transistors and a main inductor. The study was performed using a continuous voltage source and a resistive load with capacitive filter at the inverter output.
Vitor M. Fiori, Lucas R. Brigo, Ivo Barbi   +2 more
openaire   +1 more source

Model Predictive Control Methods of Leakage Current Elimination for a Three-Level T-Type Transformerless PV Inverter [PDF]

IET Power Electronics, 2018
This study presents finite control set model predictive control (FCS‐MPC) methods to eliminate leakage current for a three‐level T‐type transformerless photovoltaic (PV) inverter without any modification on topology or any hardware changes. The proposed FCS‐MPC methods are capable of eliminating the leakage current in the transformerless PV system by ...
Josep Guerrero, Kai Li, Chuan Xie
exaly   +2 more sources

A dual-bridge inverter approach to eliminating common-mode voltages and bearing and leakage currents

IEEE Transactions on Power Electronics, 1999
This paper presents a dual-bridge inverter approach to eliminate the motor common-mode voltage and resulting bearing and leakage currents. The novel dual-bridge inverter is controlled to generate balanced excitation of the induction motor under pulsewidth modulation (PWM) inverter operation.
A. von Jouanne, null Haoran Zhang
openaire   +1 more source

A novel transformerless photovoltaic grid-connected current source inverter with ground leakage current elimination

2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC), 2017
A novel single-phase single-stage transformerless grid-connected current source inverter is proposed for photovoltaic system application. The proposed inverter consists of one inductor, four unidirectional switches and two diodes. The proposed inverter does not suffer from ground leakage current since that the PV panel and the gird utilize common ...
Saeid Saeidabadi, Amin Ashraf Gandomi, Seyed Hossein Hosseini   +2 more
openaire   +1 more source

Yield improvement in fabrication of a molecular-gap atomic switch by eliminating potential leakage current paths

Japanese Journal of Applied Physics, 2023
Abstract A molecular-gap atomic switch is one of the emerging devices that works as a synaptic device. It shows good enough performance such as analog resistance change over five orders of magnitude. However, low yield in device fabrication due to short-circuit of as-fabricated devices has been a big issue. In this study, we Investigated
Haruki Ishijima, Tsuyoshi Hasegawa
openaire   +1 more source