Results 251 to 260 of about 8,004 (311)

Triboelectric horology: escapement-inspired design strategy for prolonged energy harvesting under irregular mechanical inputs. [PDF]

Microsyst Nanoeng
Lee D, Ju S, Park DY, Kwon S, Jeong YW, Choi M, Lee S, Kim YS, Cho S, Kam D, Lin ZH, Choi D.   +11 more
europepmc   +1 more source

Bioinspired spatiotemporal control of microhelix formation and actuation. [PDF]

Sci Adv
Hu X, Greenvall BR, Chia E, Zhang Z, Nonnenmann SS, Crosby AJ.   +5 more
europepmc   +1 more source

A step-up DC-DC converter with high voltage gain and soft switched capability and minimum phase characteristic. [PDF]

Sci Rep
Salehi SM, Varjani AY.
europepmc   +1 more source

An improved air-gap flux control method of a bearingless induction motor based on the optimized mutual inductance. [PDF]

Sci Rep
Lu C, Ding Q, Liu Z, Zhang Y.
europepmc   +1 more source

Optimized coil arrangement for integrating leakage inductance in high-frequency transformers of dual active bridge converters. [PDF]

Sci Rep
Yadollahi K, Zakipour A.
europepmc   +1 more source

High voltage ride-through of DFIG-based wind turbines [PDF]

2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, 2008
With the rapid increase of large offshore wind farms in Europe, a new problem associated with the response of wind turbines to temporary overvoltages has arisen. This problem has not been a focus of discussion up to now. The majority of wind turbines use voltage source converters with a DC-link. When the grid voltage exceeds a certain limit the current
Feltes, Christian, Müller-Engelhardt, Stephan, Kretschmann, Jörg, Fortmann, Jens, Koch, Friedrich W., Erlich, István   +5 more
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High voltage generator for wind turbines

8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016), 2016
This paper proposes a high voltage hybrid generator (HG) for wind turbine application. The output of the HG is rectified to a DC-link. The HG employs a multiphase stator winding that improves power density while eliminating the DC-link capacitors at the machine rectified output.
O. Beik, N. Schofield
openaire   +1 more source

A winding method of high frequency high voltage transformer

2017 IEEE Energy Conversion Congress and Exposition (ECCE), 2017
The high frequency high voltage (HFHV) transformer is one of the biggest contributors for conducted electromagnetic interference (EMI) emission of switching power supply. The transformer technologies for reducing conducted EMI emission focus on the shielding and changing the winding structures.
Junpeng Ji, Xingxia Zhang, Wenjie Chen, Shaoliang An, Xu Yang   +4 more
openaire   +1 more source

Turbogenerator with high voltage stator windings

ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501), 2002
In this paper the design of a turbogenerator with high voltage stator winding is presented. In distinction from conventional techniques the stator winding is not built with isolated bars. For this concept, common high voltage cables are used. Therefore it is possible to raise the stator voltage from 110 kV to 400 kV.
D. Flockermann, S. Kulig
openaire   +1 more source