Magnetic Energy Conversion and Transport in the Terrestrial Magnetotail Due to Dipolarization Fronts

2020 ◽  
Vol 125 (10) ◽  
Author(s):  
Lei Wang ◽  
Can Huang ◽  
Xin Cao ◽  
Aimin Du ◽  
Yasong S. Ge
Keyword(s):  
Energy Conversion ◽  
Magnetic Energy

4.13 Magnetic Energy Conversion

2018 ◽  
pp. 573-597
Author(s):  
Ercüment Yüzüak ◽  
Gizem Durak Yüzüak ◽  
İlker Dinçer ◽  
Yalçın Elerman
Keyword(s):  
Energy Conversion ◽  
Magnetic Energy

scholarly journals Magnetic-field annihilation and island formation in electron-scale current sheet in Earth's magnetotail

2020 ◽  
Author(s):  
Hiroshi Hasegawa ◽  
Richard Denton ◽  
Kevin Genestreti ◽  
Takuma Nakamura ◽  
Tai Phan ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Energy Conversion ◽  
Current Sheet ◽  
Magnetic Energy ◽  
Particle Energy ◽  
Planar Geometry ◽  
Diffusion Region ◽  
Magnetospheric Substorms ◽  
Flow Energy ◽  
The Impact

Abstract Establishing the mechanism of magnetic-to-particle energy conversion through magnetic reconnection in current sheets1 is the key to understanding the impact of fast release of magnetic energy in many space and astrophysical plasma systems, such as during magnetospheric substorms2,3. It is generally believed that an electron-scale diffusion region (EDR), where a magnetic-to-electron energy conversion occurs, has an X-type magnetic-field geometry4 around which the energy of anti-parallel magnetic fields injected is mostly converted to the bulk-flow energy of electrons by magnetic tension of reconnected field-lines5,6. However, it is at present unknown exactly how this energy conversion occurs in EDRs, because there has been no observational method to fully address this problem. Here we present state-of-the-art analysis of multi-spacecraft observations in Earth’s magnetotail of an electron-scale current sheet, which demonstrates that contrary to the standard model of reconnection with an X-type EDR geometry, the fast energy conversion in the detected EDR was caused mostly by magnetic-field annihilation, rather than reconnection. Furthermore, we detected a magnetic island forming in the EDR itself, implying that the EDR had an elongated shape ideal for island generation7 and magnetic-field annihilation. The experimental discovery of the annihilation-dominated EDR reveals a new form of energy conversion in the reconnection process that can occur when the EDR has evolved from the X-type to planar geometry.

Application of Flexible AC Transmission System Devices in Wind Energy Conversion Systems

2017 ◽  
Author(s):  
Ahmed Abu-Siada ◽  
Farhad Shahnia ◽  
A. M. Shiddiq Yunus
Keyword(s):  
Wind Energy ◽  
Energy Conversion ◽  
Magnetic Energy ◽  
Transmission System ◽  
Wind Energy Conversion ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Wind Energy Conversion Systems ◽  
Energy Conversion Systems ◽  
Ac Transmission

This book presents information about the application of various flexible AC transmission system devices to wind energy conversion systems. Devices such as unified power flow controllers, superconducting magnetic energy storage and static synchronous compensators are covered in this book. Chapters detail features of the topology and basic control systems of each device. Additionally, case studies are presented where necessary to demonstrate practical applications. This book is a reference for students and technicians studying wind power and AC transmission systems in advanced engineering courses.

scholarly journals ANALISIS PREKURSOR PERISTIWA FLARE/PELONTARAN MASSA KORONA DALAM RANGKA PERINGATAN DINI CUACA ANTARIKSA

2016 ◽  
Vol 13 (2) ◽  
pp. 97
Author(s):  
Agustinus Gunawan Admiranto ◽  
Nanang Widodo ◽  
Iyus Edi Rusnadi ◽  
Heri Sutastio ◽  
. Dasimun
Keyword(s):  
Energy Conversion ◽  
Coronal Mass Ejection ◽  
Coronal Mass Ejections ◽  
Magnetic Energy ◽  
Active Regions ◽  
Mass Ejection

Based on active regions dynamics we analyzed the precursors of flare/coronal mass ejections. From the assumption that the energy of coronal mass ejection/flare are from magnetic energy conversion that can be deducted from the changes of sunspots area we analyzed some active regions which produced flare/CME to identify the area changes before the occurrence of the event. We found that in general the sunspots area decreased before the flare/CME occurred, so it is concluded that the decrease of sunspots area can be used as precursors of flare/CME. Abstrak Dengan melihat dinamika daerah aktif dilakukan analisis prekursor fenomena flare/ pelontaran massa korona (CME). Dengan asumsi bahwa energi pelontaran massa korona berasal dari konversi energi magnet yang dilihat dari perubahan luas harian bintik Matahari maka dilakukan analisis perubahan luas harian bintik Matahari pada beberapa daerah aktif yang menghasilkan flare dan atau CME untuk melihat bagaimana luas daerah-daerah tersebut berubah menjelang terjadinya fenomena flare/CME. Didapat bahwa secara umum luas bintik Matahari mengalami penurunan beberapa saat sebelum peristiwa flare/CME ini terjadi. Dari sini dapat disimpulkan bahwa penurunan luas Harian bintik Matahari bisa dijadikan precursor atau indikasi akan adanya peristiwa flare/CME.

Observed signatures of magnetic energy conversion in solar flares and microflares

1990 ◽  
Vol 10 (9) ◽  
pp. 115-120 ◽  
Author(s):  
C.H. Mandrini ◽  
M.E. Machado ◽  
A.M. Hernandez ◽  
M.G. Rovira
Keyword(s):  
Energy Conversion ◽  
Solar Flares ◽  
Magnetic Energy
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