Results 171 to 180 of about 3,405 (198)
Some of the next articles are maybe not open access.
The balancing properties of DC link compensation for 3-phase Neutral Point Clamped (NPC) Converter
Proceedings of The 7th International Power Electronics and Motion Control Conference, 2012One of the major benefits of a three level NPC multilevel converter is that it requires only one DC source. However, the intermediate Neutral Point (NP) voltage of the converter must be maintained midway between the two outer dc-bus voltages, to avoid semiconductor device overvoltage stress and output modulation distortion. Various approaches have been
Z. Mohzani, B. P. McGrath, D. G. Holmes
openaire +1 more source
IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society, 2013
This paper presents a passive method to balance the voltage of the split capacitors in Neutral Point Clamped (NPC) based Voltage Source Converters (VSC). The voltage of the two capacitors is equated by connecting a low VA transformer at the AC side of the converter. The transformer is connected in wye configuration and its neutral point is connected to
Aitor Laka +3 more
openaire +1 more source
This paper presents a passive method to balance the voltage of the split capacitors in Neutral Point Clamped (NPC) based Voltage Source Converters (VSC). The voltage of the two capacitors is equated by connecting a low VA transformer at the AC side of the converter. The transformer is connected in wye configuration and its neutral point is connected to
Aitor Laka +3 more
openaire +1 more source
Energy, 2014
This paper is on offshore wind energy conversion systems installed on the deep water and equipped with back-to-back neutral point clamped full-power converter, permanent magnet synchronous generator with an AC link. The model for the drive train is a five-mass model which incorporates the dynamic of the structure and the tower in order to emulate the ...
Seixas, Mafalda +2 more
openaire +2 more sources
This paper is on offshore wind energy conversion systems installed on the deep water and equipped with back-to-back neutral point clamped full-power converter, permanent magnet synchronous generator with an AC link. The model for the drive train is a five-mass model which incorporates the dynamic of the structure and the tower in order to emulate the ...
Seixas, Mafalda +2 more
openaire +2 more sources
IEEE Transactions on Power Electronics, 2007
Three-level neutral point clamped (NPC) voltage source converters have recently emerged as important alternatives to conventional two-level converter topologies in high-power medium-voltage energy conversion applications, particularly in high performance ac motor drive systems.
Maryam Saeedifard, Alireza Bakhshai
openaire +1 more source
Three-level neutral point clamped (NPC) voltage source converters have recently emerged as important alternatives to conventional two-level converter topologies in high-power medium-voltage energy conversion applications, particularly in high performance ac motor drive systems.
Maryam Saeedifard, Alireza Bakhshai
openaire +1 more source
IEEE Transactions on Power Electronics, 2016
A simplified pulse width modulation (PWM) strategy for a neutral-point-clamped three-level converter with unbalanced dc links is proposed in this paper to achieve high-quality line-to-line output voltages and to maximize the linear modulation range. The simplified strategy takes the direct output voltage modulation by calculating the special solutions ...
Zongbin Ye +5 more
openaire +1 more source
A simplified pulse width modulation (PWM) strategy for a neutral-point-clamped three-level converter with unbalanced dc links is proposed in this paper to achieve high-quality line-to-line output voltages and to maximize the linear modulation range. The simplified strategy takes the direct output voltage modulation by calculating the special solutions ...
Zongbin Ye +5 more
openaire +1 more source
2017 Asian Conference on Energy, Power and Transportation Electrification (ACEPT), 2017
A well-known problem of three-level neutral point clamped (NPC) inverter is the voltage imbalance in the dc-link capacitors. This paper proposes the dc-link capacitor voltage balancing method where a common offset voltage is injected. The offset voltage consists of a harmonic voltage and a magnitude difference between the upper and the lower capacitors.
Kyoung-Pil Kang +4 more
openaire +1 more source
A well-known problem of three-level neutral point clamped (NPC) inverter is the voltage imbalance in the dc-link capacitors. This paper proposes the dc-link capacitor voltage balancing method where a common offset voltage is injected. The offset voltage consists of a harmonic voltage and a magnitude difference between the upper and the lower capacitors.
Kyoung-Pil Kang +4 more
openaire +1 more source
2018 IEEE Energy Conversion Congress and Exposition (ECCE), 2018
As wide-bandgap technologies become more readily available for commercial applications, there are still a few key limitations of the technology which need to be addressed, such as the high levels of electromagnetic interference generated by the faster switching speeds attained by these devices.
Paul Rankin +6 more
openaire +1 more source
As wide-bandgap technologies become more readily available for commercial applications, there are still a few key limitations of the technology which need to be addressed, such as the high levels of electromagnetic interference generated by the faster switching speeds attained by these devices.
Paul Rankin +6 more
openaire +1 more source
Photothermal Nanomaterials: A Powerful Light-to-Heat Converter
Chemical Reviews, 2023Ximin Cui, Qifeng Ruan, Xiaolu Zhuo
exaly
Continuous wideband microwave-to-optical converter based on room-temperature Rydberg atoms
Nature Photonics, 2023, Mateusz Mazelanik, Michał Parniak
exaly
Application number: US201213669058 20121105 Priority number(s): EP20110187801 20111104 Also published as: CN103095168 (A) CN103095168 (B) EP2590312 (A1) US9543855 (B2)
openaire
openaire